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[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / broadcom / brcm80211 / brcmfmac / msgbuf.c
1 /* Copyright (c) 2014 Broadcom Corporation
2 *
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
6 *
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
14 */
15
16 /*******************************************************************************
17 * Communicates with the dongle by using dcmd codes.
18 * For certain dcmd codes, the dongle interprets string data from the host.
19 ******************************************************************************/
20
21 #include <linux/types.h>
22 #include <linux/netdevice.h>
23 #include <linux/etherdevice.h>
24
25 #include <brcmu_utils.h>
26 #include <brcmu_wifi.h>
27
28 #include "core.h"
29 #include "debug.h"
30 #include "proto.h"
31 #include "msgbuf.h"
32 #include "commonring.h"
33 #include "flowring.h"
34 #include "bus.h"
35 #include "tracepoint.h"
36
37
38 #define MSGBUF_IOCTL_RESP_TIMEOUT msecs_to_jiffies(2000)
39
40 #define MSGBUF_TYPE_GEN_STATUS 0x1
41 #define MSGBUF_TYPE_RING_STATUS 0x2
42 #define MSGBUF_TYPE_FLOW_RING_CREATE 0x3
43 #define MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT 0x4
44 #define MSGBUF_TYPE_FLOW_RING_DELETE 0x5
45 #define MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT 0x6
46 #define MSGBUF_TYPE_FLOW_RING_FLUSH 0x7
47 #define MSGBUF_TYPE_FLOW_RING_FLUSH_CMPLT 0x8
48 #define MSGBUF_TYPE_IOCTLPTR_REQ 0x9
49 #define MSGBUF_TYPE_IOCTLPTR_REQ_ACK 0xA
50 #define MSGBUF_TYPE_IOCTLRESP_BUF_POST 0xB
51 #define MSGBUF_TYPE_IOCTL_CMPLT 0xC
52 #define MSGBUF_TYPE_EVENT_BUF_POST 0xD
53 #define MSGBUF_TYPE_WL_EVENT 0xE
54 #define MSGBUF_TYPE_TX_POST 0xF
55 #define MSGBUF_TYPE_TX_STATUS 0x10
56 #define MSGBUF_TYPE_RXBUF_POST 0x11
57 #define MSGBUF_TYPE_RX_CMPLT 0x12
58 #define MSGBUF_TYPE_LPBK_DMAXFER 0x13
59 #define MSGBUF_TYPE_LPBK_DMAXFER_CMPLT 0x14
60
61 #define NR_TX_PKTIDS 2048
62 #define NR_RX_PKTIDS 1024
63
64 #define BRCMF_IOCTL_REQ_PKTID 0xFFFE
65
66 #define BRCMF_MSGBUF_MAX_PKT_SIZE 2048
67 #define BRCMF_MSGBUF_RXBUFPOST_THRESHOLD 32
68 #define BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST 8
69 #define BRCMF_MSGBUF_MAX_EVENTBUF_POST 8
70
71 #define BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3 0x01
72 #define BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT 5
73
74 #define BRCMF_MSGBUF_TX_FLUSH_CNT1 32
75 #define BRCMF_MSGBUF_TX_FLUSH_CNT2 96
76
77 #define BRCMF_MSGBUF_DELAY_TXWORKER_THRS 96
78 #define BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS 32
79 #define BRCMF_MSGBUF_UPDATE_RX_PTR_THRS 48
80
81
82 struct msgbuf_common_hdr {
83 u8 msgtype;
84 u8 ifidx;
85 u8 flags;
86 u8 rsvd0;
87 __le32 request_id;
88 };
89
90 struct msgbuf_ioctl_req_hdr {
91 struct msgbuf_common_hdr msg;
92 __le32 cmd;
93 __le16 trans_id;
94 __le16 input_buf_len;
95 __le16 output_buf_len;
96 __le16 rsvd0[3];
97 struct msgbuf_buf_addr req_buf_addr;
98 __le32 rsvd1[2];
99 };
100
101 struct msgbuf_tx_msghdr {
102 struct msgbuf_common_hdr msg;
103 u8 txhdr[ETH_HLEN];
104 u8 flags;
105 u8 seg_cnt;
106 struct msgbuf_buf_addr metadata_buf_addr;
107 struct msgbuf_buf_addr data_buf_addr;
108 __le16 metadata_buf_len;
109 __le16 data_len;
110 __le32 rsvd0;
111 };
112
113 struct msgbuf_rx_bufpost {
114 struct msgbuf_common_hdr msg;
115 __le16 metadata_buf_len;
116 __le16 data_buf_len;
117 __le32 rsvd0;
118 struct msgbuf_buf_addr metadata_buf_addr;
119 struct msgbuf_buf_addr data_buf_addr;
120 };
121
122 struct msgbuf_rx_ioctl_resp_or_event {
123 struct msgbuf_common_hdr msg;
124 __le16 host_buf_len;
125 __le16 rsvd0[3];
126 struct msgbuf_buf_addr host_buf_addr;
127 __le32 rsvd1[4];
128 };
129
130 struct msgbuf_completion_hdr {
131 __le16 status;
132 __le16 flow_ring_id;
133 };
134
135 struct msgbuf_rx_event {
136 struct msgbuf_common_hdr msg;
137 struct msgbuf_completion_hdr compl_hdr;
138 __le16 event_data_len;
139 __le16 seqnum;
140 __le16 rsvd0[4];
141 };
142
143 struct msgbuf_ioctl_resp_hdr {
144 struct msgbuf_common_hdr msg;
145 struct msgbuf_completion_hdr compl_hdr;
146 __le16 resp_len;
147 __le16 trans_id;
148 __le32 cmd;
149 __le32 rsvd0;
150 };
151
152 struct msgbuf_tx_status {
153 struct msgbuf_common_hdr msg;
154 struct msgbuf_completion_hdr compl_hdr;
155 __le16 metadata_len;
156 __le16 tx_status;
157 };
158
159 struct msgbuf_rx_complete {
160 struct msgbuf_common_hdr msg;
161 struct msgbuf_completion_hdr compl_hdr;
162 __le16 metadata_len;
163 __le16 data_len;
164 __le16 data_offset;
165 __le16 flags;
166 __le32 rx_status_0;
167 __le32 rx_status_1;
168 __le32 rsvd0;
169 };
170
171 struct msgbuf_tx_flowring_create_req {
172 struct msgbuf_common_hdr msg;
173 u8 da[ETH_ALEN];
174 u8 sa[ETH_ALEN];
175 u8 tid;
176 u8 if_flags;
177 __le16 flow_ring_id;
178 u8 tc;
179 u8 priority;
180 __le16 int_vector;
181 __le16 max_items;
182 __le16 len_item;
183 struct msgbuf_buf_addr flow_ring_addr;
184 };
185
186 struct msgbuf_tx_flowring_delete_req {
187 struct msgbuf_common_hdr msg;
188 __le16 flow_ring_id;
189 __le16 reason;
190 __le32 rsvd0[7];
191 };
192
193 struct msgbuf_flowring_create_resp {
194 struct msgbuf_common_hdr msg;
195 struct msgbuf_completion_hdr compl_hdr;
196 __le32 rsvd0[3];
197 };
198
199 struct msgbuf_flowring_delete_resp {
200 struct msgbuf_common_hdr msg;
201 struct msgbuf_completion_hdr compl_hdr;
202 __le32 rsvd0[3];
203 };
204
205 struct msgbuf_flowring_flush_resp {
206 struct msgbuf_common_hdr msg;
207 struct msgbuf_completion_hdr compl_hdr;
208 __le32 rsvd0[3];
209 };
210
211 struct brcmf_msgbuf_work_item {
212 struct list_head queue;
213 u32 flowid;
214 int ifidx;
215 u8 sa[ETH_ALEN];
216 u8 da[ETH_ALEN];
217 };
218
219 struct brcmf_msgbuf {
220 struct brcmf_pub *drvr;
221
222 struct brcmf_commonring **commonrings;
223 struct brcmf_commonring **flowrings;
224 dma_addr_t *flowring_dma_handle;
225
226 u16 max_flowrings;
227 u16 max_submissionrings;
228 u16 max_completionrings;
229
230 u16 rx_dataoffset;
231 u32 max_rxbufpost;
232 u16 rx_metadata_offset;
233 u32 rxbufpost;
234
235 u32 max_ioctlrespbuf;
236 u32 cur_ioctlrespbuf;
237 u32 max_eventbuf;
238 u32 cur_eventbuf;
239
240 void *ioctbuf;
241 dma_addr_t ioctbuf_handle;
242 u32 ioctbuf_phys_hi;
243 u32 ioctbuf_phys_lo;
244 int ioctl_resp_status;
245 u32 ioctl_resp_ret_len;
246 u32 ioctl_resp_pktid;
247
248 u16 data_seq_no;
249 u16 ioctl_seq_no;
250 u32 reqid;
251 wait_queue_head_t ioctl_resp_wait;
252 bool ctl_completed;
253
254 struct brcmf_msgbuf_pktids *tx_pktids;
255 struct brcmf_msgbuf_pktids *rx_pktids;
256 struct brcmf_flowring *flow;
257
258 struct workqueue_struct *txflow_wq;
259 struct work_struct txflow_work;
260 unsigned long *flow_map;
261 unsigned long *txstatus_done_map;
262
263 struct work_struct flowring_work;
264 spinlock_t flowring_work_lock;
265 struct list_head work_queue;
266 };
267
268 struct brcmf_msgbuf_pktid {
269 atomic_t allocated;
270 u16 data_offset;
271 struct sk_buff *skb;
272 dma_addr_t physaddr;
273 };
274
275 struct brcmf_msgbuf_pktids {
276 u32 array_size;
277 u32 last_allocated_idx;
278 enum dma_data_direction direction;
279 struct brcmf_msgbuf_pktid *array;
280 };
281
282 static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf);
283
284
285 static struct brcmf_msgbuf_pktids *
286 brcmf_msgbuf_init_pktids(u32 nr_array_entries,
287 enum dma_data_direction direction)
288 {
289 struct brcmf_msgbuf_pktid *array;
290 struct brcmf_msgbuf_pktids *pktids;
291
292 array = kcalloc(nr_array_entries, sizeof(*array), GFP_KERNEL);
293 if (!array)
294 return NULL;
295
296 pktids = kzalloc(sizeof(*pktids), GFP_KERNEL);
297 if (!pktids) {
298 kfree(array);
299 return NULL;
300 }
301 pktids->array = array;
302 pktids->array_size = nr_array_entries;
303
304 return pktids;
305 }
306
307
308 static int
309 brcmf_msgbuf_alloc_pktid(struct device *dev,
310 struct brcmf_msgbuf_pktids *pktids,
311 struct sk_buff *skb, u16 data_offset,
312 dma_addr_t *physaddr, u32 *idx)
313 {
314 struct brcmf_msgbuf_pktid *array;
315 u32 count;
316
317 array = pktids->array;
318
319 *physaddr = dma_map_single(dev, skb->data + data_offset,
320 skb->len - data_offset, pktids->direction);
321
322 if (dma_mapping_error(dev, *physaddr)) {
323 brcmf_err("dma_map_single failed !!\n");
324 return -ENOMEM;
325 }
326
327 *idx = pktids->last_allocated_idx;
328
329 count = 0;
330 do {
331 (*idx)++;
332 if (*idx == pktids->array_size)
333 *idx = 0;
334 if (array[*idx].allocated.counter == 0)
335 if (atomic_cmpxchg(&array[*idx].allocated, 0, 1) == 0)
336 break;
337 count++;
338 } while (count < pktids->array_size);
339
340 if (count == pktids->array_size)
341 return -ENOMEM;
342
343 array[*idx].data_offset = data_offset;
344 array[*idx].physaddr = *physaddr;
345 array[*idx].skb = skb;
346
347 pktids->last_allocated_idx = *idx;
348
349 return 0;
350 }
351
352
353 static struct sk_buff *
354 brcmf_msgbuf_get_pktid(struct device *dev, struct brcmf_msgbuf_pktids *pktids,
355 u32 idx)
356 {
357 struct brcmf_msgbuf_pktid *pktid;
358 struct sk_buff *skb;
359
360 if (idx >= pktids->array_size) {
361 brcmf_err("Invalid packet id %d (max %d)\n", idx,
362 pktids->array_size);
363 return NULL;
364 }
365 if (pktids->array[idx].allocated.counter) {
366 pktid = &pktids->array[idx];
367 dma_unmap_single(dev, pktid->physaddr,
368 pktid->skb->len - pktid->data_offset,
369 pktids->direction);
370 skb = pktid->skb;
371 pktid->allocated.counter = 0;
372 return skb;
373 } else {
374 brcmf_err("Invalid packet id %d (not in use)\n", idx);
375 }
376
377 return NULL;
378 }
379
380
381 static void
382 brcmf_msgbuf_release_array(struct device *dev,
383 struct brcmf_msgbuf_pktids *pktids)
384 {
385 struct brcmf_msgbuf_pktid *array;
386 struct brcmf_msgbuf_pktid *pktid;
387 u32 count;
388
389 array = pktids->array;
390 count = 0;
391 do {
392 if (array[count].allocated.counter) {
393 pktid = &array[count];
394 dma_unmap_single(dev, pktid->physaddr,
395 pktid->skb->len - pktid->data_offset,
396 pktids->direction);
397 brcmu_pkt_buf_free_skb(pktid->skb);
398 }
399 count++;
400 } while (count < pktids->array_size);
401
402 kfree(array);
403 kfree(pktids);
404 }
405
406
407 static void brcmf_msgbuf_release_pktids(struct brcmf_msgbuf *msgbuf)
408 {
409 if (msgbuf->rx_pktids)
410 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
411 msgbuf->rx_pktids);
412 if (msgbuf->tx_pktids)
413 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
414 msgbuf->tx_pktids);
415 }
416
417
418 static int brcmf_msgbuf_tx_ioctl(struct brcmf_pub *drvr, int ifidx,
419 uint cmd, void *buf, uint len)
420 {
421 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
422 struct brcmf_commonring *commonring;
423 struct msgbuf_ioctl_req_hdr *request;
424 u16 buf_len;
425 void *ret_ptr;
426 int err;
427
428 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
429 brcmf_commonring_lock(commonring);
430 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
431 if (!ret_ptr) {
432 brcmf_err("Failed to reserve space in commonring\n");
433 brcmf_commonring_unlock(commonring);
434 return -ENOMEM;
435 }
436
437 msgbuf->reqid++;
438
439 request = (struct msgbuf_ioctl_req_hdr *)ret_ptr;
440 request->msg.msgtype = MSGBUF_TYPE_IOCTLPTR_REQ;
441 request->msg.ifidx = (u8)ifidx;
442 request->msg.flags = 0;
443 request->msg.request_id = cpu_to_le32(BRCMF_IOCTL_REQ_PKTID);
444 request->cmd = cpu_to_le32(cmd);
445 request->output_buf_len = cpu_to_le16(len);
446 request->trans_id = cpu_to_le16(msgbuf->reqid);
447
448 buf_len = min_t(u16, len, BRCMF_TX_IOCTL_MAX_MSG_SIZE);
449 request->input_buf_len = cpu_to_le16(buf_len);
450 request->req_buf_addr.high_addr = cpu_to_le32(msgbuf->ioctbuf_phys_hi);
451 request->req_buf_addr.low_addr = cpu_to_le32(msgbuf->ioctbuf_phys_lo);
452 if (buf)
453 memcpy(msgbuf->ioctbuf, buf, buf_len);
454 else
455 memset(msgbuf->ioctbuf, 0, buf_len);
456
457 err = brcmf_commonring_write_complete(commonring);
458 brcmf_commonring_unlock(commonring);
459
460 return err;
461 }
462
463
464 static int brcmf_msgbuf_ioctl_resp_wait(struct brcmf_msgbuf *msgbuf)
465 {
466 return wait_event_timeout(msgbuf->ioctl_resp_wait,
467 msgbuf->ctl_completed,
468 MSGBUF_IOCTL_RESP_TIMEOUT);
469 }
470
471
472 static void brcmf_msgbuf_ioctl_resp_wake(struct brcmf_msgbuf *msgbuf)
473 {
474 msgbuf->ctl_completed = true;
475 wake_up(&msgbuf->ioctl_resp_wait);
476 }
477
478
479 static int brcmf_msgbuf_query_dcmd(struct brcmf_pub *drvr, int ifidx,
480 uint cmd, void *buf, uint len)
481 {
482 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
483 struct sk_buff *skb = NULL;
484 int timeout;
485 int err;
486
487 brcmf_dbg(MSGBUF, "ifidx=%d, cmd=%d, len=%d\n", ifidx, cmd, len);
488 msgbuf->ctl_completed = false;
489 err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
490 if (err)
491 return err;
492
493 timeout = brcmf_msgbuf_ioctl_resp_wait(msgbuf);
494 if (!timeout) {
495 brcmf_err("Timeout on response for query command\n");
496 return -EIO;
497 }
498
499 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
500 msgbuf->rx_pktids,
501 msgbuf->ioctl_resp_pktid);
502 if (msgbuf->ioctl_resp_ret_len != 0) {
503 if (!skb)
504 return -EBADF;
505
506 memcpy(buf, skb->data, (len < msgbuf->ioctl_resp_ret_len) ?
507 len : msgbuf->ioctl_resp_ret_len);
508 }
509 brcmu_pkt_buf_free_skb(skb);
510
511 return msgbuf->ioctl_resp_status;
512 }
513
514
515 static int brcmf_msgbuf_set_dcmd(struct brcmf_pub *drvr, int ifidx,
516 uint cmd, void *buf, uint len)
517 {
518 return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len);
519 }
520
521
522 static int brcmf_msgbuf_hdrpull(struct brcmf_pub *drvr, bool do_fws,
523 struct sk_buff *skb, struct brcmf_if **ifp)
524 {
525 return -ENODEV;
526 }
527
528 static void brcmf_msgbuf_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb)
529 {
530 }
531
532 static void
533 brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf *msgbuf, u16 flowid)
534 {
535 u32 dma_sz;
536 void *dma_buf;
537
538 brcmf_dbg(MSGBUF, "Removing flowring %d\n", flowid);
539
540 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
541 dma_buf = msgbuf->flowrings[flowid]->buf_addr;
542 dma_free_coherent(msgbuf->drvr->bus_if->dev, dma_sz, dma_buf,
543 msgbuf->flowring_dma_handle[flowid]);
544
545 brcmf_flowring_delete(msgbuf->flow, flowid);
546 }
547
548
549 static struct brcmf_msgbuf_work_item *
550 brcmf_msgbuf_dequeue_work(struct brcmf_msgbuf *msgbuf)
551 {
552 struct brcmf_msgbuf_work_item *work = NULL;
553 ulong flags;
554
555 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
556 if (!list_empty(&msgbuf->work_queue)) {
557 work = list_first_entry(&msgbuf->work_queue,
558 struct brcmf_msgbuf_work_item, queue);
559 list_del(&work->queue);
560 }
561 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
562
563 return work;
564 }
565
566
567 static u32
568 brcmf_msgbuf_flowring_create_worker(struct brcmf_msgbuf *msgbuf,
569 struct brcmf_msgbuf_work_item *work)
570 {
571 struct msgbuf_tx_flowring_create_req *create;
572 struct brcmf_commonring *commonring;
573 void *ret_ptr;
574 u32 flowid;
575 void *dma_buf;
576 u32 dma_sz;
577 u64 address;
578 int err;
579
580 flowid = work->flowid;
581 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
582 dma_buf = dma_alloc_coherent(msgbuf->drvr->bus_if->dev, dma_sz,
583 &msgbuf->flowring_dma_handle[flowid],
584 GFP_KERNEL);
585 if (!dma_buf) {
586 brcmf_err("dma_alloc_coherent failed\n");
587 brcmf_flowring_delete(msgbuf->flow, flowid);
588 return BRCMF_FLOWRING_INVALID_ID;
589 }
590
591 brcmf_commonring_config(msgbuf->flowrings[flowid],
592 BRCMF_H2D_TXFLOWRING_MAX_ITEM,
593 BRCMF_H2D_TXFLOWRING_ITEMSIZE, dma_buf);
594
595 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
596 brcmf_commonring_lock(commonring);
597 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
598 if (!ret_ptr) {
599 brcmf_err("Failed to reserve space in commonring\n");
600 brcmf_commonring_unlock(commonring);
601 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
602 return BRCMF_FLOWRING_INVALID_ID;
603 }
604
605 create = (struct msgbuf_tx_flowring_create_req *)ret_ptr;
606 create->msg.msgtype = MSGBUF_TYPE_FLOW_RING_CREATE;
607 create->msg.ifidx = work->ifidx;
608 create->msg.request_id = 0;
609 create->tid = brcmf_flowring_tid(msgbuf->flow, flowid);
610 create->flow_ring_id = cpu_to_le16(flowid +
611 BRCMF_H2D_MSGRING_FLOWRING_IDSTART);
612 memcpy(create->sa, work->sa, ETH_ALEN);
613 memcpy(create->da, work->da, ETH_ALEN);
614 address = (u64)msgbuf->flowring_dma_handle[flowid];
615 create->flow_ring_addr.high_addr = cpu_to_le32(address >> 32);
616 create->flow_ring_addr.low_addr = cpu_to_le32(address & 0xffffffff);
617 create->max_items = cpu_to_le16(BRCMF_H2D_TXFLOWRING_MAX_ITEM);
618 create->len_item = cpu_to_le16(BRCMF_H2D_TXFLOWRING_ITEMSIZE);
619
620 brcmf_dbg(MSGBUF, "Send Flow Create Req flow ID %d for peer %pM prio %d ifindex %d\n",
621 flowid, work->da, create->tid, work->ifidx);
622
623 err = brcmf_commonring_write_complete(commonring);
624 brcmf_commonring_unlock(commonring);
625 if (err) {
626 brcmf_err("Failed to write commonring\n");
627 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
628 return BRCMF_FLOWRING_INVALID_ID;
629 }
630
631 return flowid;
632 }
633
634
635 static void brcmf_msgbuf_flowring_worker(struct work_struct *work)
636 {
637 struct brcmf_msgbuf *msgbuf;
638 struct brcmf_msgbuf_work_item *create;
639
640 msgbuf = container_of(work, struct brcmf_msgbuf, flowring_work);
641
642 while ((create = brcmf_msgbuf_dequeue_work(msgbuf))) {
643 brcmf_msgbuf_flowring_create_worker(msgbuf, create);
644 kfree(create);
645 }
646 }
647
648
649 static u32 brcmf_msgbuf_flowring_create(struct brcmf_msgbuf *msgbuf, int ifidx,
650 struct sk_buff *skb)
651 {
652 struct brcmf_msgbuf_work_item *create;
653 struct ethhdr *eh = (struct ethhdr *)(skb->data);
654 u32 flowid;
655 ulong flags;
656
657 create = kzalloc(sizeof(*create), GFP_ATOMIC);
658 if (create == NULL)
659 return BRCMF_FLOWRING_INVALID_ID;
660
661 flowid = brcmf_flowring_create(msgbuf->flow, eh->h_dest,
662 skb->priority, ifidx);
663 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
664 kfree(create);
665 return flowid;
666 }
667
668 create->flowid = flowid;
669 create->ifidx = ifidx;
670 memcpy(create->sa, eh->h_source, ETH_ALEN);
671 memcpy(create->da, eh->h_dest, ETH_ALEN);
672
673 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
674 list_add_tail(&create->queue, &msgbuf->work_queue);
675 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
676 schedule_work(&msgbuf->flowring_work);
677
678 return flowid;
679 }
680
681
682 static void brcmf_msgbuf_txflow(struct brcmf_msgbuf *msgbuf, u16 flowid)
683 {
684 struct brcmf_flowring *flow = msgbuf->flow;
685 struct brcmf_commonring *commonring;
686 void *ret_ptr;
687 u32 count;
688 struct sk_buff *skb;
689 dma_addr_t physaddr;
690 u32 pktid;
691 struct msgbuf_tx_msghdr *tx_msghdr;
692 u64 address;
693
694 commonring = msgbuf->flowrings[flowid];
695 if (!brcmf_commonring_write_available(commonring))
696 return;
697
698 brcmf_commonring_lock(commonring);
699
700 count = BRCMF_MSGBUF_TX_FLUSH_CNT2 - BRCMF_MSGBUF_TX_FLUSH_CNT1;
701 while (brcmf_flowring_qlen(flow, flowid)) {
702 skb = brcmf_flowring_dequeue(flow, flowid);
703 if (skb == NULL) {
704 brcmf_err("No SKB, but qlen %d\n",
705 brcmf_flowring_qlen(flow, flowid));
706 break;
707 }
708 skb_orphan(skb);
709 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
710 msgbuf->tx_pktids, skb, ETH_HLEN,
711 &physaddr, &pktid)) {
712 brcmf_flowring_reinsert(flow, flowid, skb);
713 brcmf_err("No PKTID available !!\n");
714 break;
715 }
716 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
717 if (!ret_ptr) {
718 brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
719 msgbuf->tx_pktids, pktid);
720 brcmf_flowring_reinsert(flow, flowid, skb);
721 break;
722 }
723 count++;
724
725 tx_msghdr = (struct msgbuf_tx_msghdr *)ret_ptr;
726
727 tx_msghdr->msg.msgtype = MSGBUF_TYPE_TX_POST;
728 tx_msghdr->msg.request_id = cpu_to_le32(pktid);
729 tx_msghdr->msg.ifidx = brcmf_flowring_ifidx_get(flow, flowid);
730 tx_msghdr->flags = BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3;
731 tx_msghdr->flags |= (skb->priority & 0x07) <<
732 BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT;
733 tx_msghdr->seg_cnt = 1;
734 memcpy(tx_msghdr->txhdr, skb->data, ETH_HLEN);
735 tx_msghdr->data_len = cpu_to_le16(skb->len - ETH_HLEN);
736 address = (u64)physaddr;
737 tx_msghdr->data_buf_addr.high_addr = cpu_to_le32(address >> 32);
738 tx_msghdr->data_buf_addr.low_addr =
739 cpu_to_le32(address & 0xffffffff);
740 tx_msghdr->metadata_buf_len = 0;
741 tx_msghdr->metadata_buf_addr.high_addr = 0;
742 tx_msghdr->metadata_buf_addr.low_addr = 0;
743 atomic_inc(&commonring->outstanding_tx);
744 if (count >= BRCMF_MSGBUF_TX_FLUSH_CNT2) {
745 brcmf_commonring_write_complete(commonring);
746 count = 0;
747 }
748 }
749 if (count)
750 brcmf_commonring_write_complete(commonring);
751 brcmf_commonring_unlock(commonring);
752 }
753
754
755 static void brcmf_msgbuf_txflow_worker(struct work_struct *worker)
756 {
757 struct brcmf_msgbuf *msgbuf;
758 u32 flowid;
759
760 msgbuf = container_of(worker, struct brcmf_msgbuf, txflow_work);
761 for_each_set_bit(flowid, msgbuf->flow_map, msgbuf->max_flowrings) {
762 clear_bit(flowid, msgbuf->flow_map);
763 brcmf_msgbuf_txflow(msgbuf, flowid);
764 }
765 }
766
767
768 static int brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf *msgbuf, u32 flowid,
769 bool force)
770 {
771 struct brcmf_commonring *commonring;
772
773 set_bit(flowid, msgbuf->flow_map);
774 commonring = msgbuf->flowrings[flowid];
775 if ((force) || (atomic_read(&commonring->outstanding_tx) <
776 BRCMF_MSGBUF_DELAY_TXWORKER_THRS))
777 queue_work(msgbuf->txflow_wq, &msgbuf->txflow_work);
778
779 return 0;
780 }
781
782
783 static int brcmf_msgbuf_tx_queue_data(struct brcmf_pub *drvr, int ifidx,
784 struct sk_buff *skb)
785 {
786 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
787 struct brcmf_flowring *flow = msgbuf->flow;
788 struct ethhdr *eh = (struct ethhdr *)(skb->data);
789 u32 flowid;
790 u32 queue_count;
791 bool force;
792
793 flowid = brcmf_flowring_lookup(flow, eh->h_dest, skb->priority, ifidx);
794 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
795 flowid = brcmf_msgbuf_flowring_create(msgbuf, ifidx, skb);
796 if (flowid == BRCMF_FLOWRING_INVALID_ID)
797 return -ENOMEM;
798 }
799 queue_count = brcmf_flowring_enqueue(flow, flowid, skb);
800 force = ((queue_count % BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) == 0);
801 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, force);
802
803 return 0;
804 }
805
806
807 static void
808 brcmf_msgbuf_configure_addr_mode(struct brcmf_pub *drvr, int ifidx,
809 enum proto_addr_mode addr_mode)
810 {
811 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
812
813 brcmf_flowring_configure_addr_mode(msgbuf->flow, ifidx, addr_mode);
814 }
815
816
817 static void
818 brcmf_msgbuf_delete_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
819 {
820 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
821
822 brcmf_flowring_delete_peer(msgbuf->flow, ifidx, peer);
823 }
824
825
826 static void
827 brcmf_msgbuf_add_tdls_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
828 {
829 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
830
831 brcmf_flowring_add_tdls_peer(msgbuf->flow, ifidx, peer);
832 }
833
834
835 static void
836 brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf *msgbuf, void *buf)
837 {
838 struct msgbuf_ioctl_resp_hdr *ioctl_resp;
839
840 ioctl_resp = (struct msgbuf_ioctl_resp_hdr *)buf;
841
842 msgbuf->ioctl_resp_status =
843 (s16)le16_to_cpu(ioctl_resp->compl_hdr.status);
844 msgbuf->ioctl_resp_ret_len = le16_to_cpu(ioctl_resp->resp_len);
845 msgbuf->ioctl_resp_pktid = le32_to_cpu(ioctl_resp->msg.request_id);
846
847 brcmf_msgbuf_ioctl_resp_wake(msgbuf);
848
849 if (msgbuf->cur_ioctlrespbuf)
850 msgbuf->cur_ioctlrespbuf--;
851 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
852 }
853
854
855 static void
856 brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf *msgbuf, void *buf)
857 {
858 struct brcmf_commonring *commonring;
859 struct msgbuf_tx_status *tx_status;
860 u32 idx;
861 struct sk_buff *skb;
862 u16 flowid;
863
864 tx_status = (struct msgbuf_tx_status *)buf;
865 idx = le32_to_cpu(tx_status->msg.request_id);
866 flowid = le16_to_cpu(tx_status->compl_hdr.flow_ring_id);
867 flowid -= BRCMF_H2D_MSGRING_FLOWRING_IDSTART;
868 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
869 msgbuf->tx_pktids, idx);
870 if (!skb)
871 return;
872
873 set_bit(flowid, msgbuf->txstatus_done_map);
874 commonring = msgbuf->flowrings[flowid];
875 atomic_dec(&commonring->outstanding_tx);
876
877 brcmf_txfinalize(brcmf_get_ifp(msgbuf->drvr, tx_status->msg.ifidx),
878 skb, true);
879 }
880
881
882 static u32 brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf *msgbuf, u32 count)
883 {
884 struct brcmf_commonring *commonring;
885 void *ret_ptr;
886 struct sk_buff *skb;
887 u16 alloced;
888 u32 pktlen;
889 dma_addr_t physaddr;
890 struct msgbuf_rx_bufpost *rx_bufpost;
891 u64 address;
892 u32 pktid;
893 u32 i;
894
895 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
896 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
897 count,
898 &alloced);
899 if (!ret_ptr) {
900 brcmf_dbg(MSGBUF, "Failed to reserve space in commonring\n");
901 return 0;
902 }
903
904 for (i = 0; i < alloced; i++) {
905 rx_bufpost = (struct msgbuf_rx_bufpost *)ret_ptr;
906 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
907
908 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
909
910 if (skb == NULL) {
911 brcmf_err("Failed to alloc SKB\n");
912 brcmf_commonring_write_cancel(commonring, alloced - i);
913 break;
914 }
915
916 pktlen = skb->len;
917 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
918 msgbuf->rx_pktids, skb, 0,
919 &physaddr, &pktid)) {
920 dev_kfree_skb_any(skb);
921 brcmf_err("No PKTID available !!\n");
922 brcmf_commonring_write_cancel(commonring, alloced - i);
923 break;
924 }
925
926 if (msgbuf->rx_metadata_offset) {
927 address = (u64)physaddr;
928 rx_bufpost->metadata_buf_len =
929 cpu_to_le16(msgbuf->rx_metadata_offset);
930 rx_bufpost->metadata_buf_addr.high_addr =
931 cpu_to_le32(address >> 32);
932 rx_bufpost->metadata_buf_addr.low_addr =
933 cpu_to_le32(address & 0xffffffff);
934
935 skb_pull(skb, msgbuf->rx_metadata_offset);
936 pktlen = skb->len;
937 physaddr += msgbuf->rx_metadata_offset;
938 }
939 rx_bufpost->msg.msgtype = MSGBUF_TYPE_RXBUF_POST;
940 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
941
942 address = (u64)physaddr;
943 rx_bufpost->data_buf_len = cpu_to_le16((u16)pktlen);
944 rx_bufpost->data_buf_addr.high_addr =
945 cpu_to_le32(address >> 32);
946 rx_bufpost->data_buf_addr.low_addr =
947 cpu_to_le32(address & 0xffffffff);
948
949 ret_ptr += brcmf_commonring_len_item(commonring);
950 }
951
952 if (i)
953 brcmf_commonring_write_complete(commonring);
954
955 return i;
956 }
957
958
959 static void
960 brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf *msgbuf)
961 {
962 u32 fillbufs;
963 u32 retcount;
964
965 fillbufs = msgbuf->max_rxbufpost - msgbuf->rxbufpost;
966
967 while (fillbufs) {
968 retcount = brcmf_msgbuf_rxbuf_data_post(msgbuf, fillbufs);
969 if (!retcount)
970 break;
971 msgbuf->rxbufpost += retcount;
972 fillbufs -= retcount;
973 }
974 }
975
976
977 static void
978 brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf *msgbuf, u16 rxcnt)
979 {
980 msgbuf->rxbufpost -= rxcnt;
981 if (msgbuf->rxbufpost <= (msgbuf->max_rxbufpost -
982 BRCMF_MSGBUF_RXBUFPOST_THRESHOLD))
983 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
984 }
985
986
987 static u32
988 brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf *msgbuf, bool event_buf,
989 u32 count)
990 {
991 struct brcmf_commonring *commonring;
992 void *ret_ptr;
993 struct sk_buff *skb;
994 u16 alloced;
995 u32 pktlen;
996 dma_addr_t physaddr;
997 struct msgbuf_rx_ioctl_resp_or_event *rx_bufpost;
998 u64 address;
999 u32 pktid;
1000 u32 i;
1001
1002 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1003 brcmf_commonring_lock(commonring);
1004 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
1005 count,
1006 &alloced);
1007 if (!ret_ptr) {
1008 brcmf_err("Failed to reserve space in commonring\n");
1009 brcmf_commonring_unlock(commonring);
1010 return 0;
1011 }
1012
1013 for (i = 0; i < alloced; i++) {
1014 rx_bufpost = (struct msgbuf_rx_ioctl_resp_or_event *)ret_ptr;
1015 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
1016
1017 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
1018
1019 if (skb == NULL) {
1020 brcmf_err("Failed to alloc SKB\n");
1021 brcmf_commonring_write_cancel(commonring, alloced - i);
1022 break;
1023 }
1024
1025 pktlen = skb->len;
1026 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
1027 msgbuf->rx_pktids, skb, 0,
1028 &physaddr, &pktid)) {
1029 dev_kfree_skb_any(skb);
1030 brcmf_err("No PKTID available !!\n");
1031 brcmf_commonring_write_cancel(commonring, alloced - i);
1032 break;
1033 }
1034 if (event_buf)
1035 rx_bufpost->msg.msgtype = MSGBUF_TYPE_EVENT_BUF_POST;
1036 else
1037 rx_bufpost->msg.msgtype =
1038 MSGBUF_TYPE_IOCTLRESP_BUF_POST;
1039 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
1040
1041 address = (u64)physaddr;
1042 rx_bufpost->host_buf_len = cpu_to_le16((u16)pktlen);
1043 rx_bufpost->host_buf_addr.high_addr =
1044 cpu_to_le32(address >> 32);
1045 rx_bufpost->host_buf_addr.low_addr =
1046 cpu_to_le32(address & 0xffffffff);
1047
1048 ret_ptr += brcmf_commonring_len_item(commonring);
1049 }
1050
1051 if (i)
1052 brcmf_commonring_write_complete(commonring);
1053
1054 brcmf_commonring_unlock(commonring);
1055
1056 return i;
1057 }
1058
1059
1060 static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf)
1061 {
1062 u32 count;
1063
1064 count = msgbuf->max_ioctlrespbuf - msgbuf->cur_ioctlrespbuf;
1065 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, false, count);
1066 msgbuf->cur_ioctlrespbuf += count;
1067 }
1068
1069
1070 static void brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf *msgbuf)
1071 {
1072 u32 count;
1073
1074 count = msgbuf->max_eventbuf - msgbuf->cur_eventbuf;
1075 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, true, count);
1076 msgbuf->cur_eventbuf += count;
1077 }
1078
1079
1080 static void brcmf_msgbuf_process_event(struct brcmf_msgbuf *msgbuf, void *buf)
1081 {
1082 struct msgbuf_rx_event *event;
1083 u32 idx;
1084 u16 buflen;
1085 struct sk_buff *skb;
1086 struct brcmf_if *ifp;
1087
1088 event = (struct msgbuf_rx_event *)buf;
1089 idx = le32_to_cpu(event->msg.request_id);
1090 buflen = le16_to_cpu(event->event_data_len);
1091
1092 if (msgbuf->cur_eventbuf)
1093 msgbuf->cur_eventbuf--;
1094 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1095
1096 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1097 msgbuf->rx_pktids, idx);
1098 if (!skb)
1099 return;
1100
1101 if (msgbuf->rx_dataoffset)
1102 skb_pull(skb, msgbuf->rx_dataoffset);
1103
1104 skb_trim(skb, buflen);
1105
1106 ifp = brcmf_get_ifp(msgbuf->drvr, event->msg.ifidx);
1107 if (!ifp || !ifp->ndev) {
1108 brcmf_err("Received pkt for invalid ifidx %d\n",
1109 event->msg.ifidx);
1110 goto exit;
1111 }
1112
1113 skb->protocol = eth_type_trans(skb, ifp->ndev);
1114
1115 brcmf_fweh_process_skb(ifp->drvr, skb);
1116
1117 exit:
1118 brcmu_pkt_buf_free_skb(skb);
1119 }
1120
1121
1122 static void
1123 brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf *msgbuf, void *buf)
1124 {
1125 struct msgbuf_rx_complete *rx_complete;
1126 struct sk_buff *skb;
1127 u16 data_offset;
1128 u16 buflen;
1129 u32 idx;
1130 struct brcmf_if *ifp;
1131
1132 brcmf_msgbuf_update_rxbufpost_count(msgbuf, 1);
1133
1134 rx_complete = (struct msgbuf_rx_complete *)buf;
1135 data_offset = le16_to_cpu(rx_complete->data_offset);
1136 buflen = le16_to_cpu(rx_complete->data_len);
1137 idx = le32_to_cpu(rx_complete->msg.request_id);
1138
1139 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1140 msgbuf->rx_pktids, idx);
1141 if (!skb)
1142 return;
1143
1144 if (data_offset)
1145 skb_pull(skb, data_offset);
1146 else if (msgbuf->rx_dataoffset)
1147 skb_pull(skb, msgbuf->rx_dataoffset);
1148
1149 skb_trim(skb, buflen);
1150
1151 ifp = brcmf_get_ifp(msgbuf->drvr, rx_complete->msg.ifidx);
1152 if (!ifp || !ifp->ndev) {
1153 brcmf_err("Received pkt for invalid ifidx %d\n",
1154 rx_complete->msg.ifidx);
1155 brcmu_pkt_buf_free_skb(skb);
1156 return;
1157 }
1158
1159 skb->protocol = eth_type_trans(skb, ifp->ndev);
1160 brcmf_netif_rx(ifp, skb);
1161 }
1162
1163
1164 static void
1165 brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf *msgbuf,
1166 void *buf)
1167 {
1168 struct msgbuf_flowring_create_resp *flowring_create_resp;
1169 u16 status;
1170 u16 flowid;
1171
1172 flowring_create_resp = (struct msgbuf_flowring_create_resp *)buf;
1173
1174 flowid = le16_to_cpu(flowring_create_resp->compl_hdr.flow_ring_id);
1175 flowid -= BRCMF_H2D_MSGRING_FLOWRING_IDSTART;
1176 status = le16_to_cpu(flowring_create_resp->compl_hdr.status);
1177
1178 if (status) {
1179 brcmf_err("Flowring creation failed, code %d\n", status);
1180 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1181 return;
1182 }
1183 brcmf_dbg(MSGBUF, "Flowring %d Create response status %d\n", flowid,
1184 status);
1185
1186 brcmf_flowring_open(msgbuf->flow, flowid);
1187
1188 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
1189 }
1190
1191
1192 static void
1193 brcmf_msgbuf_process_flow_ring_delete_response(struct brcmf_msgbuf *msgbuf,
1194 void *buf)
1195 {
1196 struct msgbuf_flowring_delete_resp *flowring_delete_resp;
1197 u16 status;
1198 u16 flowid;
1199
1200 flowring_delete_resp = (struct msgbuf_flowring_delete_resp *)buf;
1201
1202 flowid = le16_to_cpu(flowring_delete_resp->compl_hdr.flow_ring_id);
1203 flowid -= BRCMF_H2D_MSGRING_FLOWRING_IDSTART;
1204 status = le16_to_cpu(flowring_delete_resp->compl_hdr.status);
1205
1206 if (status) {
1207 brcmf_err("Flowring deletion failed, code %d\n", status);
1208 brcmf_flowring_delete(msgbuf->flow, flowid);
1209 return;
1210 }
1211 brcmf_dbg(MSGBUF, "Flowring %d Delete response status %d\n", flowid,
1212 status);
1213
1214 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1215 }
1216
1217
1218 static void brcmf_msgbuf_process_msgtype(struct brcmf_msgbuf *msgbuf, void *buf)
1219 {
1220 struct msgbuf_common_hdr *msg;
1221
1222 msg = (struct msgbuf_common_hdr *)buf;
1223 switch (msg->msgtype) {
1224 case MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT:
1225 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT\n");
1226 brcmf_msgbuf_process_flow_ring_create_response(msgbuf, buf);
1227 break;
1228 case MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT:
1229 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT\n");
1230 brcmf_msgbuf_process_flow_ring_delete_response(msgbuf, buf);
1231 break;
1232 case MSGBUF_TYPE_IOCTLPTR_REQ_ACK:
1233 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTLPTR_REQ_ACK\n");
1234 break;
1235 case MSGBUF_TYPE_IOCTL_CMPLT:
1236 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTL_CMPLT\n");
1237 brcmf_msgbuf_process_ioctl_complete(msgbuf, buf);
1238 break;
1239 case MSGBUF_TYPE_WL_EVENT:
1240 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_WL_EVENT\n");
1241 brcmf_msgbuf_process_event(msgbuf, buf);
1242 break;
1243 case MSGBUF_TYPE_TX_STATUS:
1244 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_TX_STATUS\n");
1245 brcmf_msgbuf_process_txstatus(msgbuf, buf);
1246 break;
1247 case MSGBUF_TYPE_RX_CMPLT:
1248 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RX_CMPLT\n");
1249 brcmf_msgbuf_process_rx_complete(msgbuf, buf);
1250 break;
1251 default:
1252 brcmf_err("Unsupported msgtype %d\n", msg->msgtype);
1253 break;
1254 }
1255 }
1256
1257
1258 static void brcmf_msgbuf_process_rx(struct brcmf_msgbuf *msgbuf,
1259 struct brcmf_commonring *commonring)
1260 {
1261 void *buf;
1262 u16 count;
1263 u16 processed;
1264
1265 again:
1266 buf = brcmf_commonring_get_read_ptr(commonring, &count);
1267 if (buf == NULL)
1268 return;
1269
1270 processed = 0;
1271 while (count) {
1272 brcmf_msgbuf_process_msgtype(msgbuf,
1273 buf + msgbuf->rx_dataoffset);
1274 buf += brcmf_commonring_len_item(commonring);
1275 processed++;
1276 if (processed == BRCMF_MSGBUF_UPDATE_RX_PTR_THRS) {
1277 brcmf_commonring_read_complete(commonring, processed);
1278 processed = 0;
1279 }
1280 count--;
1281 }
1282 if (processed)
1283 brcmf_commonring_read_complete(commonring, processed);
1284
1285 if (commonring->r_ptr == 0)
1286 goto again;
1287 }
1288
1289
1290 int brcmf_proto_msgbuf_rx_trigger(struct device *dev)
1291 {
1292 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1293 struct brcmf_pub *drvr = bus_if->drvr;
1294 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1295 struct brcmf_commonring *commonring;
1296 void *buf;
1297 u32 flowid;
1298 int qlen;
1299
1300 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1301 brcmf_msgbuf_process_rx(msgbuf, buf);
1302 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1303 brcmf_msgbuf_process_rx(msgbuf, buf);
1304 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1305 brcmf_msgbuf_process_rx(msgbuf, buf);
1306
1307 for_each_set_bit(flowid, msgbuf->txstatus_done_map,
1308 msgbuf->max_flowrings) {
1309 clear_bit(flowid, msgbuf->txstatus_done_map);
1310 commonring = msgbuf->flowrings[flowid];
1311 qlen = brcmf_flowring_qlen(msgbuf->flow, flowid);
1312 if ((qlen > BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) ||
1313 ((qlen) && (atomic_read(&commonring->outstanding_tx) <
1314 BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS)))
1315 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
1316 }
1317
1318 return 0;
1319 }
1320
1321
1322 void brcmf_msgbuf_delete_flowring(struct brcmf_pub *drvr, u16 flowid)
1323 {
1324 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1325 struct msgbuf_tx_flowring_delete_req *delete;
1326 struct brcmf_commonring *commonring;
1327 void *ret_ptr;
1328 u8 ifidx;
1329 int err;
1330
1331 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1332 brcmf_commonring_lock(commonring);
1333 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
1334 if (!ret_ptr) {
1335 brcmf_err("FW unaware, flowring will be removed !!\n");
1336 brcmf_commonring_unlock(commonring);
1337 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1338 return;
1339 }
1340
1341 delete = (struct msgbuf_tx_flowring_delete_req *)ret_ptr;
1342
1343 ifidx = brcmf_flowring_ifidx_get(msgbuf->flow, flowid);
1344
1345 delete->msg.msgtype = MSGBUF_TYPE_FLOW_RING_DELETE;
1346 delete->msg.ifidx = ifidx;
1347 delete->msg.request_id = 0;
1348
1349 delete->flow_ring_id = cpu_to_le16(flowid +
1350 BRCMF_H2D_MSGRING_FLOWRING_IDSTART);
1351 delete->reason = 0;
1352
1353 brcmf_dbg(MSGBUF, "Send Flow Delete Req flow ID %d, ifindex %d\n",
1354 flowid, ifidx);
1355
1356 err = brcmf_commonring_write_complete(commonring);
1357 brcmf_commonring_unlock(commonring);
1358 if (err) {
1359 brcmf_err("Failed to submit RING_DELETE, flowring will be removed\n");
1360 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1361 }
1362 }
1363
1364 #ifdef DEBUG
1365 static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1366 {
1367 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
1368 struct brcmf_pub *drvr = bus_if->drvr;
1369 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1370 struct brcmf_commonring *commonring;
1371 u16 i;
1372 struct brcmf_flowring_ring *ring;
1373 struct brcmf_flowring_hash *hash;
1374
1375 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1376 seq_printf(seq, "h2d_ctl_submit: rp %4u, wp %4u, depth %4u\n",
1377 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1378 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
1379 seq_printf(seq, "h2d_rx_submit: rp %4u, wp %4u, depth %4u\n",
1380 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1381 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1382 seq_printf(seq, "d2h_ctl_cmplt: rp %4u, wp %4u, depth %4u\n",
1383 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1384 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1385 seq_printf(seq, "d2h_tx_cmplt: rp %4u, wp %4u, depth %4u\n",
1386 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1387 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1388 seq_printf(seq, "d2h_rx_cmplt: rp %4u, wp %4u, depth %4u\n",
1389 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1390
1391 seq_printf(seq, "\nh2d_flowrings: depth %u\n",
1392 BRCMF_H2D_TXFLOWRING_MAX_ITEM);
1393 seq_puts(seq, "Active flowrings:\n");
1394 hash = msgbuf->flow->hash;
1395 for (i = 0; i < msgbuf->flow->nrofrings; i++) {
1396 if (!msgbuf->flow->rings[i])
1397 continue;
1398 ring = msgbuf->flow->rings[i];
1399 if (ring->status != RING_OPEN)
1400 continue;
1401 commonring = msgbuf->flowrings[i];
1402 hash = &msgbuf->flow->hash[ring->hash_id];
1403 seq_printf(seq, "id %3u: rp %4u, wp %4u, qlen %4u, blocked %u\n"
1404 " ifidx %u, fifo %u, da %pM\n",
1405 i, commonring->r_ptr, commonring->w_ptr,
1406 skb_queue_len(&ring->skblist), ring->blocked,
1407 hash->ifidx, hash->fifo, hash->mac);
1408 }
1409
1410 return 0;
1411 }
1412 #else
1413 static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1414 {
1415 return 0;
1416 }
1417 #endif
1418
1419 int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
1420 {
1421 struct brcmf_bus_msgbuf *if_msgbuf;
1422 struct brcmf_msgbuf *msgbuf;
1423 u64 address;
1424 u32 count;
1425
1426 if_msgbuf = drvr->bus_if->msgbuf;
1427
1428 if (if_msgbuf->max_flowrings >= BRCMF_FLOWRING_HASHSIZE) {
1429 brcmf_err("driver not configured for this many flowrings %d\n",
1430 if_msgbuf->max_flowrings);
1431 if_msgbuf->max_flowrings = BRCMF_FLOWRING_HASHSIZE - 1;
1432 }
1433
1434 msgbuf = kzalloc(sizeof(*msgbuf), GFP_KERNEL);
1435 if (!msgbuf)
1436 goto fail;
1437
1438 msgbuf->txflow_wq = create_singlethread_workqueue("msgbuf_txflow");
1439 if (msgbuf->txflow_wq == NULL) {
1440 brcmf_err("workqueue creation failed\n");
1441 goto fail;
1442 }
1443 INIT_WORK(&msgbuf->txflow_work, brcmf_msgbuf_txflow_worker);
1444 count = BITS_TO_LONGS(if_msgbuf->max_flowrings);
1445 count = count * sizeof(unsigned long);
1446 msgbuf->flow_map = kzalloc(count, GFP_KERNEL);
1447 if (!msgbuf->flow_map)
1448 goto fail;
1449
1450 msgbuf->txstatus_done_map = kzalloc(count, GFP_KERNEL);
1451 if (!msgbuf->txstatus_done_map)
1452 goto fail;
1453
1454 msgbuf->drvr = drvr;
1455 msgbuf->ioctbuf = dma_alloc_coherent(drvr->bus_if->dev,
1456 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1457 &msgbuf->ioctbuf_handle,
1458 GFP_KERNEL);
1459 if (!msgbuf->ioctbuf)
1460 goto fail;
1461 address = (u64)msgbuf->ioctbuf_handle;
1462 msgbuf->ioctbuf_phys_hi = address >> 32;
1463 msgbuf->ioctbuf_phys_lo = address & 0xffffffff;
1464
1465 drvr->proto->hdrpull = brcmf_msgbuf_hdrpull;
1466 drvr->proto->query_dcmd = brcmf_msgbuf_query_dcmd;
1467 drvr->proto->set_dcmd = brcmf_msgbuf_set_dcmd;
1468 drvr->proto->tx_queue_data = brcmf_msgbuf_tx_queue_data;
1469 drvr->proto->configure_addr_mode = brcmf_msgbuf_configure_addr_mode;
1470 drvr->proto->delete_peer = brcmf_msgbuf_delete_peer;
1471 drvr->proto->add_tdls_peer = brcmf_msgbuf_add_tdls_peer;
1472 drvr->proto->rxreorder = brcmf_msgbuf_rxreorder;
1473 drvr->proto->pd = msgbuf;
1474
1475 init_waitqueue_head(&msgbuf->ioctl_resp_wait);
1476
1477 msgbuf->commonrings =
1478 (struct brcmf_commonring **)if_msgbuf->commonrings;
1479 msgbuf->flowrings = (struct brcmf_commonring **)if_msgbuf->flowrings;
1480 msgbuf->max_flowrings = if_msgbuf->max_flowrings;
1481 msgbuf->flowring_dma_handle = kzalloc(msgbuf->max_flowrings *
1482 sizeof(*msgbuf->flowring_dma_handle), GFP_KERNEL);
1483 if (!msgbuf->flowring_dma_handle)
1484 goto fail;
1485
1486 msgbuf->rx_dataoffset = if_msgbuf->rx_dataoffset;
1487 msgbuf->max_rxbufpost = if_msgbuf->max_rxbufpost;
1488
1489 msgbuf->max_ioctlrespbuf = BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST;
1490 msgbuf->max_eventbuf = BRCMF_MSGBUF_MAX_EVENTBUF_POST;
1491
1492 msgbuf->tx_pktids = brcmf_msgbuf_init_pktids(NR_TX_PKTIDS,
1493 DMA_TO_DEVICE);
1494 if (!msgbuf->tx_pktids)
1495 goto fail;
1496 msgbuf->rx_pktids = brcmf_msgbuf_init_pktids(NR_RX_PKTIDS,
1497 DMA_FROM_DEVICE);
1498 if (!msgbuf->rx_pktids)
1499 goto fail;
1500
1501 msgbuf->flow = brcmf_flowring_attach(drvr->bus_if->dev,
1502 if_msgbuf->max_flowrings);
1503 if (!msgbuf->flow)
1504 goto fail;
1505
1506
1507 brcmf_dbg(MSGBUF, "Feeding buffers, rx data %d, rx event %d, rx ioctl resp %d\n",
1508 msgbuf->max_rxbufpost, msgbuf->max_eventbuf,
1509 msgbuf->max_ioctlrespbuf);
1510 count = 0;
1511 do {
1512 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
1513 if (msgbuf->max_rxbufpost != msgbuf->rxbufpost)
1514 msleep(10);
1515 else
1516 break;
1517 count++;
1518 } while (count < 10);
1519 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1520 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
1521
1522 INIT_WORK(&msgbuf->flowring_work, brcmf_msgbuf_flowring_worker);
1523 spin_lock_init(&msgbuf->flowring_work_lock);
1524 INIT_LIST_HEAD(&msgbuf->work_queue);
1525
1526 brcmf_debugfs_add_entry(drvr, "msgbuf_stats", brcmf_msgbuf_stats_read);
1527
1528 return 0;
1529
1530 fail:
1531 if (msgbuf) {
1532 kfree(msgbuf->flow_map);
1533 kfree(msgbuf->txstatus_done_map);
1534 brcmf_msgbuf_release_pktids(msgbuf);
1535 kfree(msgbuf->flowring_dma_handle);
1536 if (msgbuf->ioctbuf)
1537 dma_free_coherent(drvr->bus_if->dev,
1538 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1539 msgbuf->ioctbuf,
1540 msgbuf->ioctbuf_handle);
1541 kfree(msgbuf);
1542 }
1543 return -ENOMEM;
1544 }
1545
1546
1547 void brcmf_proto_msgbuf_detach(struct brcmf_pub *drvr)
1548 {
1549 struct brcmf_msgbuf *msgbuf;
1550 struct brcmf_msgbuf_work_item *work;
1551
1552 brcmf_dbg(TRACE, "Enter\n");
1553 if (drvr->proto->pd) {
1554 msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1555 cancel_work_sync(&msgbuf->flowring_work);
1556 while (!list_empty(&msgbuf->work_queue)) {
1557 work = list_first_entry(&msgbuf->work_queue,
1558 struct brcmf_msgbuf_work_item,
1559 queue);
1560 list_del(&work->queue);
1561 kfree(work);
1562 }
1563 kfree(msgbuf->flow_map);
1564 kfree(msgbuf->txstatus_done_map);
1565 if (msgbuf->txflow_wq)
1566 destroy_workqueue(msgbuf->txflow_wq);
1567
1568 brcmf_flowring_detach(msgbuf->flow);
1569 dma_free_coherent(drvr->bus_if->dev,
1570 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1571 msgbuf->ioctbuf, msgbuf->ioctbuf_handle);
1572 brcmf_msgbuf_release_pktids(msgbuf);
1573 kfree(msgbuf->flowring_dma_handle);
1574 kfree(msgbuf);
1575 drvr->proto->pd = NULL;
1576 }
1577 }
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