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Linux 4.19.133
[linux/fpc-iii.git] / drivers / net / wireless / broadcom / brcm80211 / brcmfmac / msgbuf.c
blobee922b0525610e9b355eeb7acb68d9122888de4e
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_FRAME_802_11 0x02
73 #define BRCMF_MSGBUF_PKT_FLAGS_FRAME_MASK 0x07
74 #define BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT 5
75
76 #define BRCMF_MSGBUF_TX_FLUSH_CNT1 32
77 #define BRCMF_MSGBUF_TX_FLUSH_CNT2 96
78
79 #define BRCMF_MSGBUF_DELAY_TXWORKER_THRS 96
80 #define BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS 32
81 #define BRCMF_MSGBUF_UPDATE_RX_PTR_THRS 48
82
83
84 struct msgbuf_common_hdr {
85 u8 msgtype;
86 u8 ifidx;
87 u8 flags;
88 u8 rsvd0;
89 __le32 request_id;
90 };
91
92 struct msgbuf_ioctl_req_hdr {
93 struct msgbuf_common_hdr msg;
94 __le32 cmd;
95 __le16 trans_id;
96 __le16 input_buf_len;
97 __le16 output_buf_len;
98 __le16 rsvd0[3];
99 struct msgbuf_buf_addr req_buf_addr;
100 __le32 rsvd1[2];
101 };
102
103 struct msgbuf_tx_msghdr {
104 struct msgbuf_common_hdr msg;
105 u8 txhdr[ETH_HLEN];
106 u8 flags;
107 u8 seg_cnt;
108 struct msgbuf_buf_addr metadata_buf_addr;
109 struct msgbuf_buf_addr data_buf_addr;
110 __le16 metadata_buf_len;
111 __le16 data_len;
112 __le32 rsvd0;
113 };
114
115 struct msgbuf_rx_bufpost {
116 struct msgbuf_common_hdr msg;
117 __le16 metadata_buf_len;
118 __le16 data_buf_len;
119 __le32 rsvd0;
120 struct msgbuf_buf_addr metadata_buf_addr;
121 struct msgbuf_buf_addr data_buf_addr;
122 };
123
124 struct msgbuf_rx_ioctl_resp_or_event {
125 struct msgbuf_common_hdr msg;
126 __le16 host_buf_len;
127 __le16 rsvd0[3];
128 struct msgbuf_buf_addr host_buf_addr;
129 __le32 rsvd1[4];
130 };
131
132 struct msgbuf_completion_hdr {
133 __le16 status;
134 __le16 flow_ring_id;
135 };
136
137 struct msgbuf_rx_event {
138 struct msgbuf_common_hdr msg;
139 struct msgbuf_completion_hdr compl_hdr;
140 __le16 event_data_len;
141 __le16 seqnum;
142 __le16 rsvd0[4];
143 };
144
145 struct msgbuf_ioctl_resp_hdr {
146 struct msgbuf_common_hdr msg;
147 struct msgbuf_completion_hdr compl_hdr;
148 __le16 resp_len;
149 __le16 trans_id;
150 __le32 cmd;
151 __le32 rsvd0;
152 };
153
154 struct msgbuf_tx_status {
155 struct msgbuf_common_hdr msg;
156 struct msgbuf_completion_hdr compl_hdr;
157 __le16 metadata_len;
158 __le16 tx_status;
159 };
160
161 struct msgbuf_rx_complete {
162 struct msgbuf_common_hdr msg;
163 struct msgbuf_completion_hdr compl_hdr;
164 __le16 metadata_len;
165 __le16 data_len;
166 __le16 data_offset;
167 __le16 flags;
168 __le32 rx_status_0;
169 __le32 rx_status_1;
170 __le32 rsvd0;
171 };
172
173 struct msgbuf_tx_flowring_create_req {
174 struct msgbuf_common_hdr msg;
175 u8 da[ETH_ALEN];
176 u8 sa[ETH_ALEN];
177 u8 tid;
178 u8 if_flags;
179 __le16 flow_ring_id;
180 u8 tc;
181 u8 priority;
182 __le16 int_vector;
183 __le16 max_items;
184 __le16 len_item;
185 struct msgbuf_buf_addr flow_ring_addr;
186 };
187
188 struct msgbuf_tx_flowring_delete_req {
189 struct msgbuf_common_hdr msg;
190 __le16 flow_ring_id;
191 __le16 reason;
192 __le32 rsvd0[7];
193 };
194
195 struct msgbuf_flowring_create_resp {
196 struct msgbuf_common_hdr msg;
197 struct msgbuf_completion_hdr compl_hdr;
198 __le32 rsvd0[3];
199 };
200
201 struct msgbuf_flowring_delete_resp {
202 struct msgbuf_common_hdr msg;
203 struct msgbuf_completion_hdr compl_hdr;
204 __le32 rsvd0[3];
205 };
206
207 struct msgbuf_flowring_flush_resp {
208 struct msgbuf_common_hdr msg;
209 struct msgbuf_completion_hdr compl_hdr;
210 __le32 rsvd0[3];
211 };
212
213 struct brcmf_msgbuf_work_item {
214 struct list_head queue;
215 u32 flowid;
216 int ifidx;
217 u8 sa[ETH_ALEN];
218 u8 da[ETH_ALEN];
219 };
220
221 struct brcmf_msgbuf {
222 struct brcmf_pub *drvr;
223
224 struct brcmf_commonring **commonrings;
225 struct brcmf_commonring **flowrings;
226 dma_addr_t *flowring_dma_handle;
227
228 u16 max_flowrings;
229 u16 max_submissionrings;
230 u16 max_completionrings;
231
232 u16 rx_dataoffset;
233 u32 max_rxbufpost;
234 u16 rx_metadata_offset;
235 u32 rxbufpost;
236
237 u32 max_ioctlrespbuf;
238 u32 cur_ioctlrespbuf;
239 u32 max_eventbuf;
240 u32 cur_eventbuf;
241
242 void *ioctbuf;
243 dma_addr_t ioctbuf_handle;
244 u32 ioctbuf_phys_hi;
245 u32 ioctbuf_phys_lo;
246 int ioctl_resp_status;
247 u32 ioctl_resp_ret_len;
248 u32 ioctl_resp_pktid;
249
250 u16 data_seq_no;
251 u16 ioctl_seq_no;
252 u32 reqid;
253 wait_queue_head_t ioctl_resp_wait;
254 bool ctl_completed;
255
256 struct brcmf_msgbuf_pktids *tx_pktids;
257 struct brcmf_msgbuf_pktids *rx_pktids;
258 struct brcmf_flowring *flow;
259
260 struct workqueue_struct *txflow_wq;
261 struct work_struct txflow_work;
262 unsigned long *flow_map;
263 unsigned long *txstatus_done_map;
264
265 struct work_struct flowring_work;
266 spinlock_t flowring_work_lock;
267 struct list_head work_queue;
268 };
269
270 struct brcmf_msgbuf_pktid {
271 atomic_t allocated;
272 u16 data_offset;
273 struct sk_buff *skb;
274 dma_addr_t physaddr;
275 };
276
277 struct brcmf_msgbuf_pktids {
278 u32 array_size;
279 u32 last_allocated_idx;
280 enum dma_data_direction direction;
281 struct brcmf_msgbuf_pktid *array;
282 };
283
284 static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf);
285
286
287 static struct brcmf_msgbuf_pktids *
288 brcmf_msgbuf_init_pktids(u32 nr_array_entries,
289 enum dma_data_direction direction)
290 {
291 struct brcmf_msgbuf_pktid *array;
292 struct brcmf_msgbuf_pktids *pktids;
293
294 array = kcalloc(nr_array_entries, sizeof(*array), GFP_KERNEL);
295 if (!array)
296 return NULL;
297
298 pktids = kzalloc(sizeof(*pktids), GFP_KERNEL);
299 if (!pktids) {
300 kfree(array);
301 return NULL;
302 }
303 pktids->array = array;
304 pktids->array_size = nr_array_entries;
305
306 return pktids;
307 }
308
309
310 static int
311 brcmf_msgbuf_alloc_pktid(struct device *dev,
312 struct brcmf_msgbuf_pktids *pktids,
313 struct sk_buff *skb, u16 data_offset,
314 dma_addr_t *physaddr, u32 *idx)
315 {
316 struct brcmf_msgbuf_pktid *array;
317 u32 count;
318
319 array = pktids->array;
320
321 *physaddr = dma_map_single(dev, skb->data + data_offset,
322 skb->len - data_offset, pktids->direction);
323
324 if (dma_mapping_error(dev, *physaddr)) {
325 brcmf_err("dma_map_single failed !!\n");
326 return -ENOMEM;
327 }
328
329 *idx = pktids->last_allocated_idx;
330
331 count = 0;
332 do {
333 (*idx)++;
334 if (*idx == pktids->array_size)
335 *idx = 0;
336 if (array[*idx].allocated.counter == 0)
337 if (atomic_cmpxchg(&array[*idx].allocated, 0, 1) == 0)
338 break;
339 count++;
340 } while (count < pktids->array_size);
341
342 if (count == pktids->array_size)
343 return -ENOMEM;
344
345 array[*idx].data_offset = data_offset;
346 array[*idx].physaddr = *physaddr;
347 array[*idx].skb = skb;
348
349 pktids->last_allocated_idx = *idx;
350
351 return 0;
352 }
353
354
355 static struct sk_buff *
356 brcmf_msgbuf_get_pktid(struct device *dev, struct brcmf_msgbuf_pktids *pktids,
357 u32 idx)
358 {
359 struct brcmf_msgbuf_pktid *pktid;
360 struct sk_buff *skb;
361
362 if (idx >= pktids->array_size) {
363 brcmf_err("Invalid packet id %d (max %d)\n", idx,
364 pktids->array_size);
365 return NULL;
366 }
367 if (pktids->array[idx].allocated.counter) {
368 pktid = &pktids->array[idx];
369 dma_unmap_single(dev, pktid->physaddr,
370 pktid->skb->len - pktid->data_offset,
371 pktids->direction);
372 skb = pktid->skb;
373 pktid->allocated.counter = 0;
374 return skb;
375 } else {
376 brcmf_err("Invalid packet id %d (not in use)\n", idx);
377 }
378
379 return NULL;
380 }
381
382
383 static void
384 brcmf_msgbuf_release_array(struct device *dev,
385 struct brcmf_msgbuf_pktids *pktids)
386 {
387 struct brcmf_msgbuf_pktid *array;
388 struct brcmf_msgbuf_pktid *pktid;
389 u32 count;
390
391 array = pktids->array;
392 count = 0;
393 do {
394 if (array[count].allocated.counter) {
395 pktid = &array[count];
396 dma_unmap_single(dev, pktid->physaddr,
397 pktid->skb->len - pktid->data_offset,
398 pktids->direction);
399 brcmu_pkt_buf_free_skb(pktid->skb);
400 }
401 count++;
402 } while (count < pktids->array_size);
403
404 kfree(array);
405 kfree(pktids);
406 }
407
408
409 static void brcmf_msgbuf_release_pktids(struct brcmf_msgbuf *msgbuf)
410 {
411 if (msgbuf->rx_pktids)
412 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
413 msgbuf->rx_pktids);
414 if (msgbuf->tx_pktids)
415 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
416 msgbuf->tx_pktids);
417 }
418
419
420 static int brcmf_msgbuf_tx_ioctl(struct brcmf_pub *drvr, int ifidx,
421 uint cmd, void *buf, uint len)
422 {
423 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
424 struct brcmf_commonring *commonring;
425 struct msgbuf_ioctl_req_hdr *request;
426 u16 buf_len;
427 void *ret_ptr;
428 int err;
429
430 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
431 brcmf_commonring_lock(commonring);
432 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
433 if (!ret_ptr) {
434 brcmf_err("Failed to reserve space in commonring\n");
435 brcmf_commonring_unlock(commonring);
436 return -ENOMEM;
437 }
438
439 msgbuf->reqid++;
440
441 request = (struct msgbuf_ioctl_req_hdr *)ret_ptr;
442 request->msg.msgtype = MSGBUF_TYPE_IOCTLPTR_REQ;
443 request->msg.ifidx = (u8)ifidx;
444 request->msg.flags = 0;
445 request->msg.request_id = cpu_to_le32(BRCMF_IOCTL_REQ_PKTID);
446 request->cmd = cpu_to_le32(cmd);
447 request->output_buf_len = cpu_to_le16(len);
448 request->trans_id = cpu_to_le16(msgbuf->reqid);
449
450 buf_len = min_t(u16, len, BRCMF_TX_IOCTL_MAX_MSG_SIZE);
451 request->input_buf_len = cpu_to_le16(buf_len);
452 request->req_buf_addr.high_addr = cpu_to_le32(msgbuf->ioctbuf_phys_hi);
453 request->req_buf_addr.low_addr = cpu_to_le32(msgbuf->ioctbuf_phys_lo);
454 if (buf)
455 memcpy(msgbuf->ioctbuf, buf, buf_len);
456 else
457 memset(msgbuf->ioctbuf, 0, buf_len);
458
459 err = brcmf_commonring_write_complete(commonring);
460 brcmf_commonring_unlock(commonring);
461
462 return err;
463 }
464
465
466 static int brcmf_msgbuf_ioctl_resp_wait(struct brcmf_msgbuf *msgbuf)
467 {
468 return wait_event_timeout(msgbuf->ioctl_resp_wait,
469 msgbuf->ctl_completed,
470 MSGBUF_IOCTL_RESP_TIMEOUT);
471 }
472
473
474 static void brcmf_msgbuf_ioctl_resp_wake(struct brcmf_msgbuf *msgbuf)
475 {
476 msgbuf->ctl_completed = true;
477 wake_up(&msgbuf->ioctl_resp_wait);
478 }
479
480
481 static int brcmf_msgbuf_query_dcmd(struct brcmf_pub *drvr, int ifidx,
482 uint cmd, void *buf, uint len, int *fwerr)
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 *fwerr = 0;
491 msgbuf->ctl_completed = false;
492 err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
493 if (err)
494 return err;
495
496 timeout = brcmf_msgbuf_ioctl_resp_wait(msgbuf);
497 if (!timeout) {
498 brcmf_err("Timeout on response for query command\n");
499 return -EIO;
500 }
501
502 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
503 msgbuf->rx_pktids,
504 msgbuf->ioctl_resp_pktid);
505 if (msgbuf->ioctl_resp_ret_len != 0) {
506 if (!skb)
507 return -EBADF;
508
509 memcpy(buf, skb->data, (len < msgbuf->ioctl_resp_ret_len) ?
510 len : msgbuf->ioctl_resp_ret_len);
511 }
512 brcmu_pkt_buf_free_skb(skb);
513
514 *fwerr = msgbuf->ioctl_resp_status;
515 return 0;
516 }
517
518
519 static int brcmf_msgbuf_set_dcmd(struct brcmf_pub *drvr, int ifidx,
520 uint cmd, void *buf, uint len, int *fwerr)
521 {
522 return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len, fwerr);
523 }
524
525
526 static int brcmf_msgbuf_hdrpull(struct brcmf_pub *drvr, bool do_fws,
527 struct sk_buff *skb, struct brcmf_if **ifp)
528 {
529 return -ENODEV;
530 }
531
532 static void brcmf_msgbuf_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb)
533 {
534 }
535
536 static void
537 brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf *msgbuf, u16 flowid)
538 {
539 u32 dma_sz;
540 void *dma_buf;
541
542 brcmf_dbg(MSGBUF, "Removing flowring %d\n", flowid);
543
544 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
545 dma_buf = msgbuf->flowrings[flowid]->buf_addr;
546 dma_free_coherent(msgbuf->drvr->bus_if->dev, dma_sz, dma_buf,
547 msgbuf->flowring_dma_handle[flowid]);
548
549 brcmf_flowring_delete(msgbuf->flow, flowid);
550 }
551
552
553 static struct brcmf_msgbuf_work_item *
554 brcmf_msgbuf_dequeue_work(struct brcmf_msgbuf *msgbuf)
555 {
556 struct brcmf_msgbuf_work_item *work = NULL;
557 ulong flags;
558
559 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
560 if (!list_empty(&msgbuf->work_queue)) {
561 work = list_first_entry(&msgbuf->work_queue,
562 struct brcmf_msgbuf_work_item, queue);
563 list_del(&work->queue);
564 }
565 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
566
567 return work;
568 }
569
570
571 static u32
572 brcmf_msgbuf_flowring_create_worker(struct brcmf_msgbuf *msgbuf,
573 struct brcmf_msgbuf_work_item *work)
574 {
575 struct msgbuf_tx_flowring_create_req *create;
576 struct brcmf_commonring *commonring;
577 void *ret_ptr;
578 u32 flowid;
579 void *dma_buf;
580 u32 dma_sz;
581 u64 address;
582 int err;
583
584 flowid = work->flowid;
585 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
586 dma_buf = dma_alloc_coherent(msgbuf->drvr->bus_if->dev, dma_sz,
587 &msgbuf->flowring_dma_handle[flowid],
588 GFP_KERNEL);
589 if (!dma_buf) {
590 brcmf_err("dma_alloc_coherent failed\n");
591 brcmf_flowring_delete(msgbuf->flow, flowid);
592 return BRCMF_FLOWRING_INVALID_ID;
593 }
594
595 brcmf_commonring_config(msgbuf->flowrings[flowid],
596 BRCMF_H2D_TXFLOWRING_MAX_ITEM,
597 BRCMF_H2D_TXFLOWRING_ITEMSIZE, dma_buf);
598
599 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
600 brcmf_commonring_lock(commonring);
601 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
602 if (!ret_ptr) {
603 brcmf_err("Failed to reserve space in commonring\n");
604 brcmf_commonring_unlock(commonring);
605 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
606 return BRCMF_FLOWRING_INVALID_ID;
607 }
608
609 create = (struct msgbuf_tx_flowring_create_req *)ret_ptr;
610 create->msg.msgtype = MSGBUF_TYPE_FLOW_RING_CREATE;
611 create->msg.ifidx = work->ifidx;
612 create->msg.request_id = 0;
613 create->tid = brcmf_flowring_tid(msgbuf->flow, flowid);
614 create->flow_ring_id = cpu_to_le16(flowid +
615 BRCMF_H2D_MSGRING_FLOWRING_IDSTART);
616 memcpy(create->sa, work->sa, ETH_ALEN);
617 memcpy(create->da, work->da, ETH_ALEN);
618 address = (u64)msgbuf->flowring_dma_handle[flowid];
619 create->flow_ring_addr.high_addr = cpu_to_le32(address >> 32);
620 create->flow_ring_addr.low_addr = cpu_to_le32(address & 0xffffffff);
621 create->max_items = cpu_to_le16(BRCMF_H2D_TXFLOWRING_MAX_ITEM);
622 create->len_item = cpu_to_le16(BRCMF_H2D_TXFLOWRING_ITEMSIZE);
623
624 brcmf_dbg(MSGBUF, "Send Flow Create Req flow ID %d for peer %pM prio %d ifindex %d\n",
625 flowid, work->da, create->tid, work->ifidx);
626
627 err = brcmf_commonring_write_complete(commonring);
628 brcmf_commonring_unlock(commonring);
629 if (err) {
630 brcmf_err("Failed to write commonring\n");
631 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
632 return BRCMF_FLOWRING_INVALID_ID;
633 }
634
635 return flowid;
636 }
637
638
639 static void brcmf_msgbuf_flowring_worker(struct work_struct *work)
640 {
641 struct brcmf_msgbuf *msgbuf;
642 struct brcmf_msgbuf_work_item *create;
643
644 msgbuf = container_of(work, struct brcmf_msgbuf, flowring_work);
645
646 while ((create = brcmf_msgbuf_dequeue_work(msgbuf))) {
647 brcmf_msgbuf_flowring_create_worker(msgbuf, create);
648 kfree(create);
649 }
650 }
651
652
653 static u32 brcmf_msgbuf_flowring_create(struct brcmf_msgbuf *msgbuf, int ifidx,
654 struct sk_buff *skb)
655 {
656 struct brcmf_msgbuf_work_item *create;
657 struct ethhdr *eh = (struct ethhdr *)(skb->data);
658 u32 flowid;
659 ulong flags;
660
661 create = kzalloc(sizeof(*create), GFP_ATOMIC);
662 if (create == NULL)
663 return BRCMF_FLOWRING_INVALID_ID;
664
665 flowid = brcmf_flowring_create(msgbuf->flow, eh->h_dest,
666 skb->priority, ifidx);
667 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
668 kfree(create);
669 return flowid;
670 }
671
672 create->flowid = flowid;
673 create->ifidx = ifidx;
674 memcpy(create->sa, eh->h_source, ETH_ALEN);
675 memcpy(create->da, eh->h_dest, ETH_ALEN);
676
677 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
678 list_add_tail(&create->queue, &msgbuf->work_queue);
679 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
680 schedule_work(&msgbuf->flowring_work);
681
682 return flowid;
683 }
684
685
686 static void brcmf_msgbuf_txflow(struct brcmf_msgbuf *msgbuf, u16 flowid)
687 {
688 struct brcmf_flowring *flow = msgbuf->flow;
689 struct brcmf_commonring *commonring;
690 void *ret_ptr;
691 u32 count;
692 struct sk_buff *skb;
693 dma_addr_t physaddr;
694 u32 pktid;
695 struct msgbuf_tx_msghdr *tx_msghdr;
696 u64 address;
697
698 commonring = msgbuf->flowrings[flowid];
699 if (!brcmf_commonring_write_available(commonring))
700 return;
701
702 brcmf_commonring_lock(commonring);
703
704 count = BRCMF_MSGBUF_TX_FLUSH_CNT2 - BRCMF_MSGBUF_TX_FLUSH_CNT1;
705 while (brcmf_flowring_qlen(flow, flowid)) {
706 skb = brcmf_flowring_dequeue(flow, flowid);
707 if (skb == NULL) {
708 brcmf_err("No SKB, but qlen %d\n",
709 brcmf_flowring_qlen(flow, flowid));
710 break;
711 }
712 skb_orphan(skb);
713 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
714 msgbuf->tx_pktids, skb, ETH_HLEN,
715 &physaddr, &pktid)) {
716 brcmf_flowring_reinsert(flow, flowid, skb);
717 brcmf_err("No PKTID available !!\n");
718 break;
719 }
720 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
721 if (!ret_ptr) {
722 brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
723 msgbuf->tx_pktids, pktid);
724 brcmf_flowring_reinsert(flow, flowid, skb);
725 break;
726 }
727 count++;
728
729 tx_msghdr = (struct msgbuf_tx_msghdr *)ret_ptr;
730
731 tx_msghdr->msg.msgtype = MSGBUF_TYPE_TX_POST;
732 tx_msghdr->msg.request_id = cpu_to_le32(pktid);
733 tx_msghdr->msg.ifidx = brcmf_flowring_ifidx_get(flow, flowid);
734 tx_msghdr->flags = BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3;
735 tx_msghdr->flags |= (skb->priority & 0x07) <<
736 BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT;
737 tx_msghdr->seg_cnt = 1;
738 memcpy(tx_msghdr->txhdr, skb->data, ETH_HLEN);
739 tx_msghdr->data_len = cpu_to_le16(skb->len - ETH_HLEN);
740 address = (u64)physaddr;
741 tx_msghdr->data_buf_addr.high_addr = cpu_to_le32(address >> 32);
742 tx_msghdr->data_buf_addr.low_addr =
743 cpu_to_le32(address & 0xffffffff);
744 tx_msghdr->metadata_buf_len = 0;
745 tx_msghdr->metadata_buf_addr.high_addr = 0;
746 tx_msghdr->metadata_buf_addr.low_addr = 0;
747 atomic_inc(&commonring->outstanding_tx);
748 if (count >= BRCMF_MSGBUF_TX_FLUSH_CNT2) {
749 brcmf_commonring_write_complete(commonring);
750 count = 0;
751 }
752 }
753 if (count)
754 brcmf_commonring_write_complete(commonring);
755 brcmf_commonring_unlock(commonring);
756 }
757
758
759 static void brcmf_msgbuf_txflow_worker(struct work_struct *worker)
760 {
761 struct brcmf_msgbuf *msgbuf;
762 u32 flowid;
763
764 msgbuf = container_of(worker, struct brcmf_msgbuf, txflow_work);
765 for_each_set_bit(flowid, msgbuf->flow_map, msgbuf->max_flowrings) {
766 clear_bit(flowid, msgbuf->flow_map);
767 brcmf_msgbuf_txflow(msgbuf, flowid);
768 }
769 }
770
771
772 static int brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf *msgbuf, u32 flowid,
773 bool force)
774 {
775 struct brcmf_commonring *commonring;
776
777 set_bit(flowid, msgbuf->flow_map);
778 commonring = msgbuf->flowrings[flowid];
779 if ((force) || (atomic_read(&commonring->outstanding_tx) <
780 BRCMF_MSGBUF_DELAY_TXWORKER_THRS))
781 queue_work(msgbuf->txflow_wq, &msgbuf->txflow_work);
782
783 return 0;
784 }
785
786
787 static int brcmf_msgbuf_tx_queue_data(struct brcmf_pub *drvr, int ifidx,
788 struct sk_buff *skb)
789 {
790 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
791 struct brcmf_flowring *flow = msgbuf->flow;
792 struct ethhdr *eh = (struct ethhdr *)(skb->data);
793 u32 flowid;
794 u32 queue_count;
795 bool force;
796
797 flowid = brcmf_flowring_lookup(flow, eh->h_dest, skb->priority, ifidx);
798 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
799 flowid = brcmf_msgbuf_flowring_create(msgbuf, ifidx, skb);
800 if (flowid == BRCMF_FLOWRING_INVALID_ID)
801 return -ENOMEM;
802 }
803 queue_count = brcmf_flowring_enqueue(flow, flowid, skb);
804 force = ((queue_count % BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) == 0);
805 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, force);
806
807 return 0;
808 }
809
810
811 static void
812 brcmf_msgbuf_configure_addr_mode(struct brcmf_pub *drvr, int ifidx,
813 enum proto_addr_mode addr_mode)
814 {
815 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
816
817 brcmf_flowring_configure_addr_mode(msgbuf->flow, ifidx, addr_mode);
818 }
819
820
821 static void
822 brcmf_msgbuf_delete_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
823 {
824 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
825
826 brcmf_flowring_delete_peer(msgbuf->flow, ifidx, peer);
827 }
828
829
830 static void
831 brcmf_msgbuf_add_tdls_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
832 {
833 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
834
835 brcmf_flowring_add_tdls_peer(msgbuf->flow, ifidx, peer);
836 }
837
838
839 static void
840 brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf *msgbuf, void *buf)
841 {
842 struct msgbuf_ioctl_resp_hdr *ioctl_resp;
843
844 ioctl_resp = (struct msgbuf_ioctl_resp_hdr *)buf;
845
846 msgbuf->ioctl_resp_status =
847 (s16)le16_to_cpu(ioctl_resp->compl_hdr.status);
848 msgbuf->ioctl_resp_ret_len = le16_to_cpu(ioctl_resp->resp_len);
849 msgbuf->ioctl_resp_pktid = le32_to_cpu(ioctl_resp->msg.request_id);
850
851 brcmf_msgbuf_ioctl_resp_wake(msgbuf);
852
853 if (msgbuf->cur_ioctlrespbuf)
854 msgbuf->cur_ioctlrespbuf--;
855 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
856 }
857
858
859 static void
860 brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf *msgbuf, void *buf)
861 {
862 struct brcmf_commonring *commonring;
863 struct msgbuf_tx_status *tx_status;
864 u32 idx;
865 struct sk_buff *skb;
866 u16 flowid;
867
868 tx_status = (struct msgbuf_tx_status *)buf;
869 idx = le32_to_cpu(tx_status->msg.request_id);
870 flowid = le16_to_cpu(tx_status->compl_hdr.flow_ring_id);
871 flowid -= BRCMF_H2D_MSGRING_FLOWRING_IDSTART;
872 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
873 msgbuf->tx_pktids, idx);
874 if (!skb)
875 return;
876
877 set_bit(flowid, msgbuf->txstatus_done_map);
878 commonring = msgbuf->flowrings[flowid];
879 atomic_dec(&commonring->outstanding_tx);
880
881 brcmf_txfinalize(brcmf_get_ifp(msgbuf->drvr, tx_status->msg.ifidx),
882 skb, true);
883 }
884
885
886 static u32 brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf *msgbuf, u32 count)
887 {
888 struct brcmf_commonring *commonring;
889 void *ret_ptr;
890 struct sk_buff *skb;
891 u16 alloced;
892 u32 pktlen;
893 dma_addr_t physaddr;
894 struct msgbuf_rx_bufpost *rx_bufpost;
895 u64 address;
896 u32 pktid;
897 u32 i;
898
899 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
900 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
901 count,
902 &alloced);
903 if (!ret_ptr) {
904 brcmf_dbg(MSGBUF, "Failed to reserve space in commonring\n");
905 return 0;
906 }
907
908 for (i = 0; i < alloced; i++) {
909 rx_bufpost = (struct msgbuf_rx_bufpost *)ret_ptr;
910 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
911
912 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
913
914 if (skb == NULL) {
915 brcmf_err("Failed to alloc SKB\n");
916 brcmf_commonring_write_cancel(commonring, alloced - i);
917 break;
918 }
919
920 pktlen = skb->len;
921 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
922 msgbuf->rx_pktids, skb, 0,
923 &physaddr, &pktid)) {
924 dev_kfree_skb_any(skb);
925 brcmf_err("No PKTID available !!\n");
926 brcmf_commonring_write_cancel(commonring, alloced - i);
927 break;
928 }
929
930 if (msgbuf->rx_metadata_offset) {
931 address = (u64)physaddr;
932 rx_bufpost->metadata_buf_len =
933 cpu_to_le16(msgbuf->rx_metadata_offset);
934 rx_bufpost->metadata_buf_addr.high_addr =
935 cpu_to_le32(address >> 32);
936 rx_bufpost->metadata_buf_addr.low_addr =
937 cpu_to_le32(address & 0xffffffff);
938
939 skb_pull(skb, msgbuf->rx_metadata_offset);
940 pktlen = skb->len;
941 physaddr += msgbuf->rx_metadata_offset;
942 }
943 rx_bufpost->msg.msgtype = MSGBUF_TYPE_RXBUF_POST;
944 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
945
946 address = (u64)physaddr;
947 rx_bufpost->data_buf_len = cpu_to_le16((u16)pktlen);
948 rx_bufpost->data_buf_addr.high_addr =
949 cpu_to_le32(address >> 32);
950 rx_bufpost->data_buf_addr.low_addr =
951 cpu_to_le32(address & 0xffffffff);
952
953 ret_ptr += brcmf_commonring_len_item(commonring);
954 }
955
956 if (i)
957 brcmf_commonring_write_complete(commonring);
958
959 return i;
960 }
961
962
963 static void
964 brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf *msgbuf)
965 {
966 u32 fillbufs;
967 u32 retcount;
968
969 fillbufs = msgbuf->max_rxbufpost - msgbuf->rxbufpost;
970
971 while (fillbufs) {
972 retcount = brcmf_msgbuf_rxbuf_data_post(msgbuf, fillbufs);
973 if (!retcount)
974 break;
975 msgbuf->rxbufpost += retcount;
976 fillbufs -= retcount;
977 }
978 }
979
980
981 static void
982 brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf *msgbuf, u16 rxcnt)
983 {
984 msgbuf->rxbufpost -= rxcnt;
985 if (msgbuf->rxbufpost <= (msgbuf->max_rxbufpost -
986 BRCMF_MSGBUF_RXBUFPOST_THRESHOLD))
987 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
988 }
989
990
991 static u32
992 brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf *msgbuf, bool event_buf,
993 u32 count)
994 {
995 struct brcmf_commonring *commonring;
996 void *ret_ptr;
997 struct sk_buff *skb;
998 u16 alloced;
999 u32 pktlen;
1000 dma_addr_t physaddr;
1001 struct msgbuf_rx_ioctl_resp_or_event *rx_bufpost;
1002 u64 address;
1003 u32 pktid;
1004 u32 i;
1005
1006 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1007 brcmf_commonring_lock(commonring);
1008 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
1009 count,
1010 &alloced);
1011 if (!ret_ptr) {
1012 brcmf_err("Failed to reserve space in commonring\n");
1013 brcmf_commonring_unlock(commonring);
1014 return 0;
1015 }
1016
1017 for (i = 0; i < alloced; i++) {
1018 rx_bufpost = (struct msgbuf_rx_ioctl_resp_or_event *)ret_ptr;
1019 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
1020
1021 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
1022
1023 if (skb == NULL) {
1024 brcmf_err("Failed to alloc SKB\n");
1025 brcmf_commonring_write_cancel(commonring, alloced - i);
1026 break;
1027 }
1028
1029 pktlen = skb->len;
1030 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
1031 msgbuf->rx_pktids, skb, 0,
1032 &physaddr, &pktid)) {
1033 dev_kfree_skb_any(skb);
1034 brcmf_err("No PKTID available !!\n");
1035 brcmf_commonring_write_cancel(commonring, alloced - i);
1036 break;
1037 }
1038 if (event_buf)
1039 rx_bufpost->msg.msgtype = MSGBUF_TYPE_EVENT_BUF_POST;
1040 else
1041 rx_bufpost->msg.msgtype =
1042 MSGBUF_TYPE_IOCTLRESP_BUF_POST;
1043 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
1044
1045 address = (u64)physaddr;
1046 rx_bufpost->host_buf_len = cpu_to_le16((u16)pktlen);
1047 rx_bufpost->host_buf_addr.high_addr =
1048 cpu_to_le32(address >> 32);
1049 rx_bufpost->host_buf_addr.low_addr =
1050 cpu_to_le32(address & 0xffffffff);
1051
1052 ret_ptr += brcmf_commonring_len_item(commonring);
1053 }
1054
1055 if (i)
1056 brcmf_commonring_write_complete(commonring);
1057
1058 brcmf_commonring_unlock(commonring);
1059
1060 return i;
1061 }
1062
1063
1064 static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf)
1065 {
1066 u32 count;
1067
1068 count = msgbuf->max_ioctlrespbuf - msgbuf->cur_ioctlrespbuf;
1069 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, false, count);
1070 msgbuf->cur_ioctlrespbuf += count;
1071 }
1072
1073
1074 static void brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf *msgbuf)
1075 {
1076 u32 count;
1077
1078 count = msgbuf->max_eventbuf - msgbuf->cur_eventbuf;
1079 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, true, count);
1080 msgbuf->cur_eventbuf += count;
1081 }
1082
1083
1084 static void brcmf_msgbuf_process_event(struct brcmf_msgbuf *msgbuf, void *buf)
1085 {
1086 struct msgbuf_rx_event *event;
1087 u32 idx;
1088 u16 buflen;
1089 struct sk_buff *skb;
1090 struct brcmf_if *ifp;
1091
1092 event = (struct msgbuf_rx_event *)buf;
1093 idx = le32_to_cpu(event->msg.request_id);
1094 buflen = le16_to_cpu(event->event_data_len);
1095
1096 if (msgbuf->cur_eventbuf)
1097 msgbuf->cur_eventbuf--;
1098 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1099
1100 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1101 msgbuf->rx_pktids, idx);
1102 if (!skb)
1103 return;
1104
1105 if (msgbuf->rx_dataoffset)
1106 skb_pull(skb, msgbuf->rx_dataoffset);
1107
1108 skb_trim(skb, buflen);
1109
1110 ifp = brcmf_get_ifp(msgbuf->drvr, event->msg.ifidx);
1111 if (!ifp || !ifp->ndev) {
1112 brcmf_err("Received pkt for invalid ifidx %d\n",
1113 event->msg.ifidx);
1114 goto exit;
1115 }
1116
1117 skb->protocol = eth_type_trans(skb, ifp->ndev);
1118
1119 brcmf_fweh_process_skb(ifp->drvr, skb, 0);
1120
1121 exit:
1122 brcmu_pkt_buf_free_skb(skb);
1123 }
1124
1125
1126 static void
1127 brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf *msgbuf, void *buf)
1128 {
1129 struct msgbuf_rx_complete *rx_complete;
1130 struct sk_buff *skb;
1131 u16 data_offset;
1132 u16 buflen;
1133 u16 flags;
1134 u32 idx;
1135 struct brcmf_if *ifp;
1136
1137 brcmf_msgbuf_update_rxbufpost_count(msgbuf, 1);
1138
1139 rx_complete = (struct msgbuf_rx_complete *)buf;
1140 data_offset = le16_to_cpu(rx_complete->data_offset);
1141 buflen = le16_to_cpu(rx_complete->data_len);
1142 idx = le32_to_cpu(rx_complete->msg.request_id);
1143 flags = le16_to_cpu(rx_complete->flags);
1144
1145 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1146 msgbuf->rx_pktids, idx);
1147 if (!skb)
1148 return;
1149
1150 if (data_offset)
1151 skb_pull(skb, data_offset);
1152 else if (msgbuf->rx_dataoffset)
1153 skb_pull(skb, msgbuf->rx_dataoffset);
1154
1155 skb_trim(skb, buflen);
1156
1157 if ((flags & BRCMF_MSGBUF_PKT_FLAGS_FRAME_MASK) ==
1158 BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_11) {
1159 ifp = msgbuf->drvr->mon_if;
1160
1161 if (!ifp) {
1162 brcmf_err("Received unexpected monitor pkt\n");
1163 brcmu_pkt_buf_free_skb(skb);
1164 return;
1165 }
1166
1167 brcmf_netif_mon_rx(ifp, skb);
1168 return;
1169 }
1170
1171 ifp = brcmf_get_ifp(msgbuf->drvr, rx_complete->msg.ifidx);
1172 if (!ifp || !ifp->ndev) {
1173 brcmf_err("Received pkt for invalid ifidx %d\n",
1174 rx_complete->msg.ifidx);
1175 brcmu_pkt_buf_free_skb(skb);
1176 return;
1177 }
1178
1179 skb->protocol = eth_type_trans(skb, ifp->ndev);
1180 brcmf_netif_rx(ifp, skb);
1181 }
1182
1183
1184 static void
1185 brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf *msgbuf,
1186 void *buf)
1187 {
1188 struct msgbuf_flowring_create_resp *flowring_create_resp;
1189 u16 status;
1190 u16 flowid;
1191
1192 flowring_create_resp = (struct msgbuf_flowring_create_resp *)buf;
1193
1194 flowid = le16_to_cpu(flowring_create_resp->compl_hdr.flow_ring_id);
1195 flowid -= BRCMF_H2D_MSGRING_FLOWRING_IDSTART;
1196 status = le16_to_cpu(flowring_create_resp->compl_hdr.status);
1197
1198 if (status) {
1199 brcmf_err("Flowring creation failed, code %d\n", status);
1200 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1201 return;
1202 }
1203 brcmf_dbg(MSGBUF, "Flowring %d Create response status %d\n", flowid,
1204 status);
1205
1206 brcmf_flowring_open(msgbuf->flow, flowid);
1207
1208 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
1209 }
1210
1211
1212 static void
1213 brcmf_msgbuf_process_flow_ring_delete_response(struct brcmf_msgbuf *msgbuf,
1214 void *buf)
1215 {
1216 struct msgbuf_flowring_delete_resp *flowring_delete_resp;
1217 u16 status;
1218 u16 flowid;
1219
1220 flowring_delete_resp = (struct msgbuf_flowring_delete_resp *)buf;
1221
1222 flowid = le16_to_cpu(flowring_delete_resp->compl_hdr.flow_ring_id);
1223 flowid -= BRCMF_H2D_MSGRING_FLOWRING_IDSTART;
1224 status = le16_to_cpu(flowring_delete_resp->compl_hdr.status);
1225
1226 if (status) {
1227 brcmf_err("Flowring deletion failed, code %d\n", status);
1228 brcmf_flowring_delete(msgbuf->flow, flowid);
1229 return;
1230 }
1231 brcmf_dbg(MSGBUF, "Flowring %d Delete response status %d\n", flowid,
1232 status);
1233
1234 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1235 }
1236
1237
1238 static void brcmf_msgbuf_process_msgtype(struct brcmf_msgbuf *msgbuf, void *buf)
1239 {
1240 struct msgbuf_common_hdr *msg;
1241
1242 msg = (struct msgbuf_common_hdr *)buf;
1243 switch (msg->msgtype) {
1244 case MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT:
1245 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT\n");
1246 brcmf_msgbuf_process_flow_ring_create_response(msgbuf, buf);
1247 break;
1248 case MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT:
1249 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT\n");
1250 brcmf_msgbuf_process_flow_ring_delete_response(msgbuf, buf);
1251 break;
1252 case MSGBUF_TYPE_IOCTLPTR_REQ_ACK:
1253 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTLPTR_REQ_ACK\n");
1254 break;
1255 case MSGBUF_TYPE_IOCTL_CMPLT:
1256 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTL_CMPLT\n");
1257 brcmf_msgbuf_process_ioctl_complete(msgbuf, buf);
1258 break;
1259 case MSGBUF_TYPE_WL_EVENT:
1260 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_WL_EVENT\n");
1261 brcmf_msgbuf_process_event(msgbuf, buf);
1262 break;
1263 case MSGBUF_TYPE_TX_STATUS:
1264 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_TX_STATUS\n");
1265 brcmf_msgbuf_process_txstatus(msgbuf, buf);
1266 break;
1267 case MSGBUF_TYPE_RX_CMPLT:
1268 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RX_CMPLT\n");
1269 brcmf_msgbuf_process_rx_complete(msgbuf, buf);
1270 break;
1271 default:
1272 brcmf_err("Unsupported msgtype %d\n", msg->msgtype);
1273 break;
1274 }
1275 }
1276
1277
1278 static void brcmf_msgbuf_process_rx(struct brcmf_msgbuf *msgbuf,
1279 struct brcmf_commonring *commonring)
1280 {
1281 void *buf;
1282 u16 count;
1283 u16 processed;
1284
1285 again:
1286 buf = brcmf_commonring_get_read_ptr(commonring, &count);
1287 if (buf == NULL)
1288 return;
1289
1290 processed = 0;
1291 while (count) {
1292 brcmf_msgbuf_process_msgtype(msgbuf,
1293 buf + msgbuf->rx_dataoffset);
1294 buf += brcmf_commonring_len_item(commonring);
1295 processed++;
1296 if (processed == BRCMF_MSGBUF_UPDATE_RX_PTR_THRS) {
1297 brcmf_commonring_read_complete(commonring, processed);
1298 processed = 0;
1299 }
1300 count--;
1301 }
1302 if (processed)
1303 brcmf_commonring_read_complete(commonring, processed);
1304
1305 if (commonring->r_ptr == 0)
1306 goto again;
1307 }
1308
1309
1310 int brcmf_proto_msgbuf_rx_trigger(struct device *dev)
1311 {
1312 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1313 struct brcmf_pub *drvr = bus_if->drvr;
1314 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1315 struct brcmf_commonring *commonring;
1316 void *buf;
1317 u32 flowid;
1318 int qlen;
1319
1320 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1321 brcmf_msgbuf_process_rx(msgbuf, buf);
1322 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1323 brcmf_msgbuf_process_rx(msgbuf, buf);
1324 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1325 brcmf_msgbuf_process_rx(msgbuf, buf);
1326
1327 for_each_set_bit(flowid, msgbuf->txstatus_done_map,
1328 msgbuf->max_flowrings) {
1329 clear_bit(flowid, msgbuf->txstatus_done_map);
1330 commonring = msgbuf->flowrings[flowid];
1331 qlen = brcmf_flowring_qlen(msgbuf->flow, flowid);
1332 if ((qlen > BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) ||
1333 ((qlen) && (atomic_read(&commonring->outstanding_tx) <
1334 BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS)))
1335 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
1336 }
1337
1338 return 0;
1339 }
1340
1341
1342 void brcmf_msgbuf_delete_flowring(struct brcmf_pub *drvr, u16 flowid)
1343 {
1344 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1345 struct msgbuf_tx_flowring_delete_req *delete;
1346 struct brcmf_commonring *commonring;
1347 void *ret_ptr;
1348 u8 ifidx;
1349 int err;
1350
1351 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1352 brcmf_commonring_lock(commonring);
1353 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
1354 if (!ret_ptr) {
1355 brcmf_err("FW unaware, flowring will be removed !!\n");
1356 brcmf_commonring_unlock(commonring);
1357 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1358 return;
1359 }
1360
1361 delete = (struct msgbuf_tx_flowring_delete_req *)ret_ptr;
1362
1363 ifidx = brcmf_flowring_ifidx_get(msgbuf->flow, flowid);
1364
1365 delete->msg.msgtype = MSGBUF_TYPE_FLOW_RING_DELETE;
1366 delete->msg.ifidx = ifidx;
1367 delete->msg.request_id = 0;
1368
1369 delete->flow_ring_id = cpu_to_le16(flowid +
1370 BRCMF_H2D_MSGRING_FLOWRING_IDSTART);
1371 delete->reason = 0;
1372
1373 brcmf_dbg(MSGBUF, "Send Flow Delete Req flow ID %d, ifindex %d\n",
1374 flowid, ifidx);
1375
1376 err = brcmf_commonring_write_complete(commonring);
1377 brcmf_commonring_unlock(commonring);
1378 if (err) {
1379 brcmf_err("Failed to submit RING_DELETE, flowring will be removed\n");
1380 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1381 }
1382 }
1383
1384 #ifdef DEBUG
1385 static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1386 {
1387 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
1388 struct brcmf_pub *drvr = bus_if->drvr;
1389 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1390 struct brcmf_commonring *commonring;
1391 u16 i;
1392 struct brcmf_flowring_ring *ring;
1393 struct brcmf_flowring_hash *hash;
1394
1395 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1396 seq_printf(seq, "h2d_ctl_submit: rp %4u, wp %4u, depth %4u\n",
1397 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1398 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
1399 seq_printf(seq, "h2d_rx_submit: rp %4u, wp %4u, depth %4u\n",
1400 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1401 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1402 seq_printf(seq, "d2h_ctl_cmplt: rp %4u, wp %4u, depth %4u\n",
1403 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1404 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1405 seq_printf(seq, "d2h_tx_cmplt: rp %4u, wp %4u, depth %4u\n",
1406 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1407 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1408 seq_printf(seq, "d2h_rx_cmplt: rp %4u, wp %4u, depth %4u\n",
1409 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1410
1411 seq_printf(seq, "\nh2d_flowrings: depth %u\n",
1412 BRCMF_H2D_TXFLOWRING_MAX_ITEM);
1413 seq_puts(seq, "Active flowrings:\n");
1414 hash = msgbuf->flow->hash;
1415 for (i = 0; i < msgbuf->flow->nrofrings; i++) {
1416 if (!msgbuf->flow->rings[i])
1417 continue;
1418 ring = msgbuf->flow->rings[i];
1419 if (ring->status != RING_OPEN)
1420 continue;
1421 commonring = msgbuf->flowrings[i];
1422 hash = &msgbuf->flow->hash[ring->hash_id];
1423 seq_printf(seq, "id %3u: rp %4u, wp %4u, qlen %4u, blocked %u\n"
1424 " ifidx %u, fifo %u, da %pM\n",
1425 i, commonring->r_ptr, commonring->w_ptr,
1426 skb_queue_len(&ring->skblist), ring->blocked,
1427 hash->ifidx, hash->fifo, hash->mac);
1428 }
1429
1430 return 0;
1431 }
1432 #else
1433 static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1434 {
1435 return 0;
1436 }
1437 #endif
1438
1439 static void brcmf_msgbuf_debugfs_create(struct brcmf_pub *drvr)
1440 {
1441 brcmf_debugfs_add_entry(drvr, "msgbuf_stats", brcmf_msgbuf_stats_read);
1442 }
1443
1444 int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
1445 {
1446 struct brcmf_bus_msgbuf *if_msgbuf;
1447 struct brcmf_msgbuf *msgbuf;
1448 u64 address;
1449 u32 count;
1450
1451 if_msgbuf = drvr->bus_if->msgbuf;
1452
1453 if (if_msgbuf->max_flowrings >= BRCMF_FLOWRING_HASHSIZE) {
1454 brcmf_err("driver not configured for this many flowrings %d\n",
1455 if_msgbuf->max_flowrings);
1456 if_msgbuf->max_flowrings = BRCMF_FLOWRING_HASHSIZE - 1;
1457 }
1458
1459 msgbuf = kzalloc(sizeof(*msgbuf), GFP_KERNEL);
1460 if (!msgbuf)
1461 goto fail;
1462
1463 msgbuf->txflow_wq = create_singlethread_workqueue("msgbuf_txflow");
1464 if (msgbuf->txflow_wq == NULL) {
1465 brcmf_err("workqueue creation failed\n");
1466 goto fail;
1467 }
1468 INIT_WORK(&msgbuf->txflow_work, brcmf_msgbuf_txflow_worker);
1469 count = BITS_TO_LONGS(if_msgbuf->max_flowrings);
1470 count = count * sizeof(unsigned long);
1471 msgbuf->flow_map = kzalloc(count, GFP_KERNEL);
1472 if (!msgbuf->flow_map)
1473 goto fail;
1474
1475 msgbuf->txstatus_done_map = kzalloc(count, GFP_KERNEL);
1476 if (!msgbuf->txstatus_done_map)
1477 goto fail;
1478
1479 msgbuf->drvr = drvr;
1480 msgbuf->ioctbuf = dma_alloc_coherent(drvr->bus_if->dev,
1481 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1482 &msgbuf->ioctbuf_handle,
1483 GFP_KERNEL);
1484 if (!msgbuf->ioctbuf)
1485 goto fail;
1486 address = (u64)msgbuf->ioctbuf_handle;
1487 msgbuf->ioctbuf_phys_hi = address >> 32;
1488 msgbuf->ioctbuf_phys_lo = address & 0xffffffff;
1489
1490 drvr->proto->hdrpull = brcmf_msgbuf_hdrpull;
1491 drvr->proto->query_dcmd = brcmf_msgbuf_query_dcmd;
1492 drvr->proto->set_dcmd = brcmf_msgbuf_set_dcmd;
1493 drvr->proto->tx_queue_data = brcmf_msgbuf_tx_queue_data;
1494 drvr->proto->configure_addr_mode = brcmf_msgbuf_configure_addr_mode;
1495 drvr->proto->delete_peer = brcmf_msgbuf_delete_peer;
1496 drvr->proto->add_tdls_peer = brcmf_msgbuf_add_tdls_peer;
1497 drvr->proto->rxreorder = brcmf_msgbuf_rxreorder;
1498 drvr->proto->debugfs_create = brcmf_msgbuf_debugfs_create;
1499 drvr->proto->pd = msgbuf;
1500
1501 init_waitqueue_head(&msgbuf->ioctl_resp_wait);
1502
1503 msgbuf->commonrings =
1504 (struct brcmf_commonring **)if_msgbuf->commonrings;
1505 msgbuf->flowrings = (struct brcmf_commonring **)if_msgbuf->flowrings;
1506 msgbuf->max_flowrings = if_msgbuf->max_flowrings;
1507 msgbuf->flowring_dma_handle =
1508 kcalloc(msgbuf->max_flowrings,
1509 sizeof(*msgbuf->flowring_dma_handle), GFP_KERNEL);
1510 if (!msgbuf->flowring_dma_handle)
1511 goto fail;
1512
1513 msgbuf->rx_dataoffset = if_msgbuf->rx_dataoffset;
1514 msgbuf->max_rxbufpost = if_msgbuf->max_rxbufpost;
1515
1516 msgbuf->max_ioctlrespbuf = BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST;
1517 msgbuf->max_eventbuf = BRCMF_MSGBUF_MAX_EVENTBUF_POST;
1518
1519 msgbuf->tx_pktids = brcmf_msgbuf_init_pktids(NR_TX_PKTIDS,
1520 DMA_TO_DEVICE);
1521 if (!msgbuf->tx_pktids)
1522 goto fail;
1523 msgbuf->rx_pktids = brcmf_msgbuf_init_pktids(NR_RX_PKTIDS,
1524 DMA_FROM_DEVICE);
1525 if (!msgbuf->rx_pktids)
1526 goto fail;
1527
1528 msgbuf->flow = brcmf_flowring_attach(drvr->bus_if->dev,
1529 if_msgbuf->max_flowrings);
1530 if (!msgbuf->flow)
1531 goto fail;
1532
1533
1534 brcmf_dbg(MSGBUF, "Feeding buffers, rx data %d, rx event %d, rx ioctl resp %d\n",
1535 msgbuf->max_rxbufpost, msgbuf->max_eventbuf,
1536 msgbuf->max_ioctlrespbuf);
1537 count = 0;
1538 do {
1539 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
1540 if (msgbuf->max_rxbufpost != msgbuf->rxbufpost)
1541 msleep(10);
1542 else
1543 break;
1544 count++;
1545 } while (count < 10);
1546 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1547 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
1548
1549 INIT_WORK(&msgbuf->flowring_work, brcmf_msgbuf_flowring_worker);
1550 spin_lock_init(&msgbuf->flowring_work_lock);
1551 INIT_LIST_HEAD(&msgbuf->work_queue);
1552
1553 return 0;
1554
1555 fail:
1556 if (msgbuf) {
1557 kfree(msgbuf->flow_map);
1558 kfree(msgbuf->txstatus_done_map);
1559 brcmf_msgbuf_release_pktids(msgbuf);
1560 kfree(msgbuf->flowring_dma_handle);
1561 if (msgbuf->ioctbuf)
1562 dma_free_coherent(drvr->bus_if->dev,
1563 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1564 msgbuf->ioctbuf,
1565 msgbuf->ioctbuf_handle);
1566 kfree(msgbuf);
1567 }
1568 return -ENOMEM;
1569 }
1570
1571
1572 void brcmf_proto_msgbuf_detach(struct brcmf_pub *drvr)
1573 {
1574 struct brcmf_msgbuf *msgbuf;
1575 struct brcmf_msgbuf_work_item *work;
1576
1577 brcmf_dbg(TRACE, "Enter\n");
1578 if (drvr->proto->pd) {
1579 msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1580 cancel_work_sync(&msgbuf->flowring_work);
1581 while (!list_empty(&msgbuf->work_queue)) {
1582 work = list_first_entry(&msgbuf->work_queue,
1583 struct brcmf_msgbuf_work_item,
1584 queue);
1585 list_del(&work->queue);
1586 kfree(work);
1587 }
1588 kfree(msgbuf->flow_map);
1589 kfree(msgbuf->txstatus_done_map);
1590 if (msgbuf->txflow_wq)
1591 destroy_workqueue(msgbuf->txflow_wq);
1592
1593 brcmf_flowring_detach(msgbuf->flow);
1594 dma_free_coherent(drvr->bus_if->dev,
1595 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1596 msgbuf->ioctbuf, msgbuf->ioctbuf_handle);
1597 brcmf_msgbuf_release_pktids(msgbuf);
1598 kfree(msgbuf->flowring_dma_handle);
1599 kfree(msgbuf);
1600 drvr->proto->pd = NULL;
1601 }
1602 }
Linux with added FPC-III support