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pstore/ram: add Device Tree bindings
[deliverable/linux.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_buf_addr {
91 __le32 low_addr;
92 __le32 high_addr;
93 };
94
95 struct msgbuf_ioctl_req_hdr {
96 struct msgbuf_common_hdr msg;
97 __le32 cmd;
98 __le16 trans_id;
99 __le16 input_buf_len;
100 __le16 output_buf_len;
101 __le16 rsvd0[3];
102 struct msgbuf_buf_addr req_buf_addr;
103 __le32 rsvd1[2];
104 };
105
106 struct msgbuf_tx_msghdr {
107 struct msgbuf_common_hdr msg;
108 u8 txhdr[ETH_HLEN];
109 u8 flags;
110 u8 seg_cnt;
111 struct msgbuf_buf_addr metadata_buf_addr;
112 struct msgbuf_buf_addr data_buf_addr;
113 __le16 metadata_buf_len;
114 __le16 data_len;
115 __le32 rsvd0;
116 };
117
118 struct msgbuf_rx_bufpost {
119 struct msgbuf_common_hdr msg;
120 __le16 metadata_buf_len;
121 __le16 data_buf_len;
122 __le32 rsvd0;
123 struct msgbuf_buf_addr metadata_buf_addr;
124 struct msgbuf_buf_addr data_buf_addr;
125 };
126
127 struct msgbuf_rx_ioctl_resp_or_event {
128 struct msgbuf_common_hdr msg;
129 __le16 host_buf_len;
130 __le16 rsvd0[3];
131 struct msgbuf_buf_addr host_buf_addr;
132 __le32 rsvd1[4];
133 };
134
135 struct msgbuf_completion_hdr {
136 __le16 status;
137 __le16 flow_ring_id;
138 };
139
140 struct msgbuf_rx_event {
141 struct msgbuf_common_hdr msg;
142 struct msgbuf_completion_hdr compl_hdr;
143 __le16 event_data_len;
144 __le16 seqnum;
145 __le16 rsvd0[4];
146 };
147
148 struct msgbuf_ioctl_resp_hdr {
149 struct msgbuf_common_hdr msg;
150 struct msgbuf_completion_hdr compl_hdr;
151 __le16 resp_len;
152 __le16 trans_id;
153 __le32 cmd;
154 __le32 rsvd0;
155 };
156
157 struct msgbuf_tx_status {
158 struct msgbuf_common_hdr msg;
159 struct msgbuf_completion_hdr compl_hdr;
160 __le16 metadata_len;
161 __le16 tx_status;
162 };
163
164 struct msgbuf_rx_complete {
165 struct msgbuf_common_hdr msg;
166 struct msgbuf_completion_hdr compl_hdr;
167 __le16 metadata_len;
168 __le16 data_len;
169 __le16 data_offset;
170 __le16 flags;
171 __le32 rx_status_0;
172 __le32 rx_status_1;
173 __le32 rsvd0;
174 };
175
176 struct msgbuf_tx_flowring_create_req {
177 struct msgbuf_common_hdr msg;
178 u8 da[ETH_ALEN];
179 u8 sa[ETH_ALEN];
180 u8 tid;
181 u8 if_flags;
182 __le16 flow_ring_id;
183 u8 tc;
184 u8 priority;
185 __le16 int_vector;
186 __le16 max_items;
187 __le16 len_item;
188 struct msgbuf_buf_addr flow_ring_addr;
189 };
190
191 struct msgbuf_tx_flowring_delete_req {
192 struct msgbuf_common_hdr msg;
193 __le16 flow_ring_id;
194 __le16 reason;
195 __le32 rsvd0[7];
196 };
197
198 struct msgbuf_flowring_create_resp {
199 struct msgbuf_common_hdr msg;
200 struct msgbuf_completion_hdr compl_hdr;
201 __le32 rsvd0[3];
202 };
203
204 struct msgbuf_flowring_delete_resp {
205 struct msgbuf_common_hdr msg;
206 struct msgbuf_completion_hdr compl_hdr;
207 __le32 rsvd0[3];
208 };
209
210 struct msgbuf_flowring_flush_resp {
211 struct msgbuf_common_hdr msg;
212 struct msgbuf_completion_hdr compl_hdr;
213 __le32 rsvd0[3];
214 };
215
216 struct brcmf_msgbuf_work_item {
217 struct list_head queue;
218 u32 flowid;
219 int ifidx;
220 u8 sa[ETH_ALEN];
221 u8 da[ETH_ALEN];
222 };
223
224 struct brcmf_msgbuf {
225 struct brcmf_pub *drvr;
226
227 struct brcmf_commonring **commonrings;
228 struct brcmf_commonring **flowrings;
229 dma_addr_t *flowring_dma_handle;
230 u16 nrof_flowrings;
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)
483 {
484 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
485 struct sk_buff *skb = NULL;
486 int timeout;
487 int err;
488
489 brcmf_dbg(MSGBUF, "ifidx=%d, cmd=%d, len=%d\n", ifidx, cmd, len);
490 msgbuf->ctl_completed = false;
491 err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
492 if (err)
493 return err;
494
495 timeout = brcmf_msgbuf_ioctl_resp_wait(msgbuf);
496 if (!timeout) {
497 brcmf_err("Timeout on response for query command\n");
498 return -EIO;
499 }
500
501 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
502 msgbuf->rx_pktids,
503 msgbuf->ioctl_resp_pktid);
504 if (msgbuf->ioctl_resp_ret_len != 0) {
505 if (!skb)
506 return -EBADF;
507
508 memcpy(buf, skb->data, (len < msgbuf->ioctl_resp_ret_len) ?
509 len : msgbuf->ioctl_resp_ret_len);
510 }
511 brcmu_pkt_buf_free_skb(skb);
512
513 return msgbuf->ioctl_resp_status;
514 }
515
516
517 static int brcmf_msgbuf_set_dcmd(struct brcmf_pub *drvr, int ifidx,
518 uint cmd, void *buf, uint len)
519 {
520 return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len);
521 }
522
523
524 static int brcmf_msgbuf_hdrpull(struct brcmf_pub *drvr, bool do_fws,
525 struct sk_buff *skb, struct brcmf_if **ifp)
526 {
527 return -ENODEV;
528 }
529
530 static void brcmf_msgbuf_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb)
531 {
532 }
533
534 static void
535 brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf *msgbuf, u16 flowid)
536 {
537 u32 dma_sz;
538 void *dma_buf;
539
540 brcmf_dbg(MSGBUF, "Removing flowring %d\n", flowid);
541
542 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
543 dma_buf = msgbuf->flowrings[flowid]->buf_addr;
544 dma_free_coherent(msgbuf->drvr->bus_if->dev, dma_sz, dma_buf,
545 msgbuf->flowring_dma_handle[flowid]);
546
547 brcmf_flowring_delete(msgbuf->flow, flowid);
548 }
549
550
551 static struct brcmf_msgbuf_work_item *
552 brcmf_msgbuf_dequeue_work(struct brcmf_msgbuf *msgbuf)
553 {
554 struct brcmf_msgbuf_work_item *work = NULL;
555 ulong flags;
556
557 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
558 if (!list_empty(&msgbuf->work_queue)) {
559 work = list_first_entry(&msgbuf->work_queue,
560 struct brcmf_msgbuf_work_item, queue);
561 list_del(&work->queue);
562 }
563 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
564
565 return work;
566 }
567
568
569 static u32
570 brcmf_msgbuf_flowring_create_worker(struct brcmf_msgbuf *msgbuf,
571 struct brcmf_msgbuf_work_item *work)
572 {
573 struct msgbuf_tx_flowring_create_req *create;
574 struct brcmf_commonring *commonring;
575 void *ret_ptr;
576 u32 flowid;
577 void *dma_buf;
578 u32 dma_sz;
579 u64 address;
580 int err;
581
582 flowid = work->flowid;
583 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
584 dma_buf = dma_alloc_coherent(msgbuf->drvr->bus_if->dev, dma_sz,
585 &msgbuf->flowring_dma_handle[flowid],
586 GFP_KERNEL);
587 if (!dma_buf) {
588 brcmf_err("dma_alloc_coherent failed\n");
589 brcmf_flowring_delete(msgbuf->flow, flowid);
590 return BRCMF_FLOWRING_INVALID_ID;
591 }
592
593 brcmf_commonring_config(msgbuf->flowrings[flowid],
594 BRCMF_H2D_TXFLOWRING_MAX_ITEM,
595 BRCMF_H2D_TXFLOWRING_ITEMSIZE, dma_buf);
596
597 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
598 brcmf_commonring_lock(commonring);
599 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
600 if (!ret_ptr) {
601 brcmf_err("Failed to reserve space in commonring\n");
602 brcmf_commonring_unlock(commonring);
603 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
604 return BRCMF_FLOWRING_INVALID_ID;
605 }
606
607 create = (struct msgbuf_tx_flowring_create_req *)ret_ptr;
608 create->msg.msgtype = MSGBUF_TYPE_FLOW_RING_CREATE;
609 create->msg.ifidx = work->ifidx;
610 create->msg.request_id = 0;
611 create->tid = brcmf_flowring_tid(msgbuf->flow, flowid);
612 create->flow_ring_id = cpu_to_le16(flowid +
613 BRCMF_NROF_H2D_COMMON_MSGRINGS);
614 memcpy(create->sa, work->sa, ETH_ALEN);
615 memcpy(create->da, work->da, ETH_ALEN);
616 address = (u64)msgbuf->flowring_dma_handle[flowid];
617 create->flow_ring_addr.high_addr = cpu_to_le32(address >> 32);
618 create->flow_ring_addr.low_addr = cpu_to_le32(address & 0xffffffff);
619 create->max_items = cpu_to_le16(BRCMF_H2D_TXFLOWRING_MAX_ITEM);
620 create->len_item = cpu_to_le16(BRCMF_H2D_TXFLOWRING_ITEMSIZE);
621
622 brcmf_dbg(MSGBUF, "Send Flow Create Req flow ID %d for peer %pM prio %d ifindex %d\n",
623 flowid, work->da, create->tid, work->ifidx);
624
625 err = brcmf_commonring_write_complete(commonring);
626 brcmf_commonring_unlock(commonring);
627 if (err) {
628 brcmf_err("Failed to write commonring\n");
629 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
630 return BRCMF_FLOWRING_INVALID_ID;
631 }
632
633 return flowid;
634 }
635
636
637 static void brcmf_msgbuf_flowring_worker(struct work_struct *work)
638 {
639 struct brcmf_msgbuf *msgbuf;
640 struct brcmf_msgbuf_work_item *create;
641
642 msgbuf = container_of(work, struct brcmf_msgbuf, flowring_work);
643
644 while ((create = brcmf_msgbuf_dequeue_work(msgbuf))) {
645 brcmf_msgbuf_flowring_create_worker(msgbuf, create);
646 kfree(create);
647 }
648 }
649
650
651 static u32 brcmf_msgbuf_flowring_create(struct brcmf_msgbuf *msgbuf, int ifidx,
652 struct sk_buff *skb)
653 {
654 struct brcmf_msgbuf_work_item *create;
655 struct ethhdr *eh = (struct ethhdr *)(skb->data);
656 u32 flowid;
657 ulong flags;
658
659 create = kzalloc(sizeof(*create), GFP_ATOMIC);
660 if (create == NULL)
661 return BRCMF_FLOWRING_INVALID_ID;
662
663 flowid = brcmf_flowring_create(msgbuf->flow, eh->h_dest,
664 skb->priority, ifidx);
665 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
666 kfree(create);
667 return flowid;
668 }
669
670 create->flowid = flowid;
671 create->ifidx = ifidx;
672 memcpy(create->sa, eh->h_source, ETH_ALEN);
673 memcpy(create->da, eh->h_dest, ETH_ALEN);
674
675 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
676 list_add_tail(&create->queue, &msgbuf->work_queue);
677 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
678 schedule_work(&msgbuf->flowring_work);
679
680 return flowid;
681 }
682
683
684 static void brcmf_msgbuf_txflow(struct brcmf_msgbuf *msgbuf, u16 flowid)
685 {
686 struct brcmf_flowring *flow = msgbuf->flow;
687 struct brcmf_commonring *commonring;
688 void *ret_ptr;
689 u32 count;
690 struct sk_buff *skb;
691 dma_addr_t physaddr;
692 u32 pktid;
693 struct msgbuf_tx_msghdr *tx_msghdr;
694 u64 address;
695
696 commonring = msgbuf->flowrings[flowid];
697 if (!brcmf_commonring_write_available(commonring))
698 return;
699
700 brcmf_commonring_lock(commonring);
701
702 count = BRCMF_MSGBUF_TX_FLUSH_CNT2 - BRCMF_MSGBUF_TX_FLUSH_CNT1;
703 while (brcmf_flowring_qlen(flow, flowid)) {
704 skb = brcmf_flowring_dequeue(flow, flowid);
705 if (skb == NULL) {
706 brcmf_err("No SKB, but qlen %d\n",
707 brcmf_flowring_qlen(flow, flowid));
708 break;
709 }
710 skb_orphan(skb);
711 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
712 msgbuf->tx_pktids, skb, ETH_HLEN,
713 &physaddr, &pktid)) {
714 brcmf_flowring_reinsert(flow, flowid, skb);
715 brcmf_err("No PKTID available !!\n");
716 break;
717 }
718 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
719 if (!ret_ptr) {
720 brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
721 msgbuf->tx_pktids, pktid);
722 brcmf_flowring_reinsert(flow, flowid, skb);
723 break;
724 }
725 count++;
726
727 tx_msghdr = (struct msgbuf_tx_msghdr *)ret_ptr;
728
729 tx_msghdr->msg.msgtype = MSGBUF_TYPE_TX_POST;
730 tx_msghdr->msg.request_id = cpu_to_le32(pktid);
731 tx_msghdr->msg.ifidx = brcmf_flowring_ifidx_get(flow, flowid);
732 tx_msghdr->flags = BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3;
733 tx_msghdr->flags |= (skb->priority & 0x07) <<
734 BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT;
735 tx_msghdr->seg_cnt = 1;
736 memcpy(tx_msghdr->txhdr, skb->data, ETH_HLEN);
737 tx_msghdr->data_len = cpu_to_le16(skb->len - ETH_HLEN);
738 address = (u64)physaddr;
739 tx_msghdr->data_buf_addr.high_addr = cpu_to_le32(address >> 32);
740 tx_msghdr->data_buf_addr.low_addr =
741 cpu_to_le32(address & 0xffffffff);
742 tx_msghdr->metadata_buf_len = 0;
743 tx_msghdr->metadata_buf_addr.high_addr = 0;
744 tx_msghdr->metadata_buf_addr.low_addr = 0;
745 atomic_inc(&commonring->outstanding_tx);
746 if (count >= BRCMF_MSGBUF_TX_FLUSH_CNT2) {
747 brcmf_commonring_write_complete(commonring);
748 count = 0;
749 }
750 }
751 if (count)
752 brcmf_commonring_write_complete(commonring);
753 brcmf_commonring_unlock(commonring);
754 }
755
756
757 static void brcmf_msgbuf_txflow_worker(struct work_struct *worker)
758 {
759 struct brcmf_msgbuf *msgbuf;
760 u32 flowid;
761
762 msgbuf = container_of(worker, struct brcmf_msgbuf, txflow_work);
763 for_each_set_bit(flowid, msgbuf->flow_map, msgbuf->nrof_flowrings) {
764 clear_bit(flowid, msgbuf->flow_map);
765 brcmf_msgbuf_txflow(msgbuf, flowid);
766 }
767 }
768
769
770 static int brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf *msgbuf, u32 flowid,
771 bool force)
772 {
773 struct brcmf_commonring *commonring;
774
775 set_bit(flowid, msgbuf->flow_map);
776 commonring = msgbuf->flowrings[flowid];
777 if ((force) || (atomic_read(&commonring->outstanding_tx) <
778 BRCMF_MSGBUF_DELAY_TXWORKER_THRS))
779 queue_work(msgbuf->txflow_wq, &msgbuf->txflow_work);
780
781 return 0;
782 }
783
784
785 static int brcmf_msgbuf_txdata(struct brcmf_pub *drvr, int ifidx,
786 u8 offset, struct sk_buff *skb)
787 {
788 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
789 struct brcmf_flowring *flow = msgbuf->flow;
790 struct ethhdr *eh = (struct ethhdr *)(skb->data);
791 u32 flowid;
792 u32 queue_count;
793 bool force;
794
795 flowid = brcmf_flowring_lookup(flow, eh->h_dest, skb->priority, ifidx);
796 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
797 flowid = brcmf_msgbuf_flowring_create(msgbuf, ifidx, skb);
798 if (flowid == BRCMF_FLOWRING_INVALID_ID)
799 return -ENOMEM;
800 }
801 queue_count = brcmf_flowring_enqueue(flow, flowid, skb);
802 force = ((queue_count % BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) == 0);
803 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, force);
804
805 return 0;
806 }
807
808
809 static void
810 brcmf_msgbuf_configure_addr_mode(struct brcmf_pub *drvr, int ifidx,
811 enum proto_addr_mode addr_mode)
812 {
813 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
814
815 brcmf_flowring_configure_addr_mode(msgbuf->flow, ifidx, addr_mode);
816 }
817
818
819 static void
820 brcmf_msgbuf_delete_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
821 {
822 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
823
824 brcmf_flowring_delete_peer(msgbuf->flow, ifidx, peer);
825 }
826
827
828 static void
829 brcmf_msgbuf_add_tdls_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
830 {
831 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
832
833 brcmf_flowring_add_tdls_peer(msgbuf->flow, ifidx, peer);
834 }
835
836
837 static void
838 brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf *msgbuf, void *buf)
839 {
840 struct msgbuf_ioctl_resp_hdr *ioctl_resp;
841
842 ioctl_resp = (struct msgbuf_ioctl_resp_hdr *)buf;
843
844 msgbuf->ioctl_resp_status =
845 (s16)le16_to_cpu(ioctl_resp->compl_hdr.status);
846 msgbuf->ioctl_resp_ret_len = le16_to_cpu(ioctl_resp->resp_len);
847 msgbuf->ioctl_resp_pktid = le32_to_cpu(ioctl_resp->msg.request_id);
848
849 brcmf_msgbuf_ioctl_resp_wake(msgbuf);
850
851 if (msgbuf->cur_ioctlrespbuf)
852 msgbuf->cur_ioctlrespbuf--;
853 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
854 }
855
856
857 static void
858 brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf *msgbuf, void *buf)
859 {
860 struct brcmf_commonring *commonring;
861 struct msgbuf_tx_status *tx_status;
862 u32 idx;
863 struct sk_buff *skb;
864 u16 flowid;
865
866 tx_status = (struct msgbuf_tx_status *)buf;
867 idx = le32_to_cpu(tx_status->msg.request_id);
868 flowid = le16_to_cpu(tx_status->compl_hdr.flow_ring_id);
869 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
870 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
871 msgbuf->tx_pktids, idx);
872 if (!skb)
873 return;
874
875 set_bit(flowid, msgbuf->txstatus_done_map);
876 commonring = msgbuf->flowrings[flowid];
877 atomic_dec(&commonring->outstanding_tx);
878
879 brcmf_txfinalize(brcmf_get_ifp(msgbuf->drvr, tx_status->msg.ifidx),
880 skb, true);
881 }
882
883
884 static u32 brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf *msgbuf, u32 count)
885 {
886 struct brcmf_commonring *commonring;
887 void *ret_ptr;
888 struct sk_buff *skb;
889 u16 alloced;
890 u32 pktlen;
891 dma_addr_t physaddr;
892 struct msgbuf_rx_bufpost *rx_bufpost;
893 u64 address;
894 u32 pktid;
895 u32 i;
896
897 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
898 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
899 count,
900 &alloced);
901 if (!ret_ptr) {
902 brcmf_dbg(MSGBUF, "Failed to reserve space in commonring\n");
903 return 0;
904 }
905
906 for (i = 0; i < alloced; i++) {
907 rx_bufpost = (struct msgbuf_rx_bufpost *)ret_ptr;
908 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
909
910 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
911
912 if (skb == NULL) {
913 brcmf_err("Failed to alloc SKB\n");
914 brcmf_commonring_write_cancel(commonring, alloced - i);
915 break;
916 }
917
918 pktlen = skb->len;
919 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
920 msgbuf->rx_pktids, skb, 0,
921 &physaddr, &pktid)) {
922 dev_kfree_skb_any(skb);
923 brcmf_err("No PKTID available !!\n");
924 brcmf_commonring_write_cancel(commonring, alloced - i);
925 break;
926 }
927
928 if (msgbuf->rx_metadata_offset) {
929 address = (u64)physaddr;
930 rx_bufpost->metadata_buf_len =
931 cpu_to_le16(msgbuf->rx_metadata_offset);
932 rx_bufpost->metadata_buf_addr.high_addr =
933 cpu_to_le32(address >> 32);
934 rx_bufpost->metadata_buf_addr.low_addr =
935 cpu_to_le32(address & 0xffffffff);
936
937 skb_pull(skb, msgbuf->rx_metadata_offset);
938 pktlen = skb->len;
939 physaddr += msgbuf->rx_metadata_offset;
940 }
941 rx_bufpost->msg.msgtype = MSGBUF_TYPE_RXBUF_POST;
942 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
943
944 address = (u64)physaddr;
945 rx_bufpost->data_buf_len = cpu_to_le16((u16)pktlen);
946 rx_bufpost->data_buf_addr.high_addr =
947 cpu_to_le32(address >> 32);
948 rx_bufpost->data_buf_addr.low_addr =
949 cpu_to_le32(address & 0xffffffff);
950
951 ret_ptr += brcmf_commonring_len_item(commonring);
952 }
953
954 if (i)
955 brcmf_commonring_write_complete(commonring);
956
957 return i;
958 }
959
960
961 static void
962 brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf *msgbuf)
963 {
964 u32 fillbufs;
965 u32 retcount;
966
967 fillbufs = msgbuf->max_rxbufpost - msgbuf->rxbufpost;
968
969 while (fillbufs) {
970 retcount = brcmf_msgbuf_rxbuf_data_post(msgbuf, fillbufs);
971 if (!retcount)
972 break;
973 msgbuf->rxbufpost += retcount;
974 fillbufs -= retcount;
975 }
976 }
977
978
979 static void
980 brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf *msgbuf, u16 rxcnt)
981 {
982 msgbuf->rxbufpost -= rxcnt;
983 if (msgbuf->rxbufpost <= (msgbuf->max_rxbufpost -
984 BRCMF_MSGBUF_RXBUFPOST_THRESHOLD))
985 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
986 }
987
988
989 static u32
990 brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf *msgbuf, bool event_buf,
991 u32 count)
992 {
993 struct brcmf_commonring *commonring;
994 void *ret_ptr;
995 struct sk_buff *skb;
996 u16 alloced;
997 u32 pktlen;
998 dma_addr_t physaddr;
999 struct msgbuf_rx_ioctl_resp_or_event *rx_bufpost;
1000 u64 address;
1001 u32 pktid;
1002 u32 i;
1003
1004 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1005 brcmf_commonring_lock(commonring);
1006 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
1007 count,
1008 &alloced);
1009 if (!ret_ptr) {
1010 brcmf_err("Failed to reserve space in commonring\n");
1011 brcmf_commonring_unlock(commonring);
1012 return 0;
1013 }
1014
1015 for (i = 0; i < alloced; i++) {
1016 rx_bufpost = (struct msgbuf_rx_ioctl_resp_or_event *)ret_ptr;
1017 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
1018
1019 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
1020
1021 if (skb == NULL) {
1022 brcmf_err("Failed to alloc SKB\n");
1023 brcmf_commonring_write_cancel(commonring, alloced - i);
1024 break;
1025 }
1026
1027 pktlen = skb->len;
1028 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
1029 msgbuf->rx_pktids, skb, 0,
1030 &physaddr, &pktid)) {
1031 dev_kfree_skb_any(skb);
1032 brcmf_err("No PKTID available !!\n");
1033 brcmf_commonring_write_cancel(commonring, alloced - i);
1034 break;
1035 }
1036 if (event_buf)
1037 rx_bufpost->msg.msgtype = MSGBUF_TYPE_EVENT_BUF_POST;
1038 else
1039 rx_bufpost->msg.msgtype =
1040 MSGBUF_TYPE_IOCTLRESP_BUF_POST;
1041 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
1042
1043 address = (u64)physaddr;
1044 rx_bufpost->host_buf_len = cpu_to_le16((u16)pktlen);
1045 rx_bufpost->host_buf_addr.high_addr =
1046 cpu_to_le32(address >> 32);
1047 rx_bufpost->host_buf_addr.low_addr =
1048 cpu_to_le32(address & 0xffffffff);
1049
1050 ret_ptr += brcmf_commonring_len_item(commonring);
1051 }
1052
1053 if (i)
1054 brcmf_commonring_write_complete(commonring);
1055
1056 brcmf_commonring_unlock(commonring);
1057
1058 return i;
1059 }
1060
1061
1062 static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf)
1063 {
1064 u32 count;
1065
1066 count = msgbuf->max_ioctlrespbuf - msgbuf->cur_ioctlrespbuf;
1067 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, false, count);
1068 msgbuf->cur_ioctlrespbuf += count;
1069 }
1070
1071
1072 static void brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf *msgbuf)
1073 {
1074 u32 count;
1075
1076 count = msgbuf->max_eventbuf - msgbuf->cur_eventbuf;
1077 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, true, count);
1078 msgbuf->cur_eventbuf += count;
1079 }
1080
1081
1082 static void brcmf_msgbuf_process_event(struct brcmf_msgbuf *msgbuf, void *buf)
1083 {
1084 struct msgbuf_rx_event *event;
1085 u32 idx;
1086 u16 buflen;
1087 struct sk_buff *skb;
1088 struct brcmf_if *ifp;
1089
1090 event = (struct msgbuf_rx_event *)buf;
1091 idx = le32_to_cpu(event->msg.request_id);
1092 buflen = le16_to_cpu(event->event_data_len);
1093
1094 if (msgbuf->cur_eventbuf)
1095 msgbuf->cur_eventbuf--;
1096 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1097
1098 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1099 msgbuf->rx_pktids, idx);
1100 if (!skb)
1101 return;
1102
1103 if (msgbuf->rx_dataoffset)
1104 skb_pull(skb, msgbuf->rx_dataoffset);
1105
1106 skb_trim(skb, buflen);
1107
1108 ifp = brcmf_get_ifp(msgbuf->drvr, event->msg.ifidx);
1109 if (!ifp || !ifp->ndev) {
1110 brcmf_err("Received pkt for invalid ifidx %d\n",
1111 event->msg.ifidx);
1112 goto exit;
1113 }
1114
1115 skb->protocol = eth_type_trans(skb, ifp->ndev);
1116
1117 brcmf_fweh_process_skb(ifp->drvr, skb);
1118
1119 exit:
1120 brcmu_pkt_buf_free_skb(skb);
1121 }
1122
1123
1124 static void
1125 brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf *msgbuf, void *buf)
1126 {
1127 struct msgbuf_rx_complete *rx_complete;
1128 struct sk_buff *skb;
1129 u16 data_offset;
1130 u16 buflen;
1131 u32 idx;
1132 struct brcmf_if *ifp;
1133
1134 brcmf_msgbuf_update_rxbufpost_count(msgbuf, 1);
1135
1136 rx_complete = (struct msgbuf_rx_complete *)buf;
1137 data_offset = le16_to_cpu(rx_complete->data_offset);
1138 buflen = le16_to_cpu(rx_complete->data_len);
1139 idx = le32_to_cpu(rx_complete->msg.request_id);
1140
1141 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1142 msgbuf->rx_pktids, idx);
1143 if (!skb)
1144 return;
1145
1146 if (data_offset)
1147 skb_pull(skb, data_offset);
1148 else if (msgbuf->rx_dataoffset)
1149 skb_pull(skb, msgbuf->rx_dataoffset);
1150
1151 skb_trim(skb, buflen);
1152
1153 ifp = brcmf_get_ifp(msgbuf->drvr, rx_complete->msg.ifidx);
1154 if (!ifp || !ifp->ndev) {
1155 brcmf_err("Received pkt for invalid ifidx %d\n",
1156 rx_complete->msg.ifidx);
1157 brcmu_pkt_buf_free_skb(skb);
1158 return;
1159 }
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_NROF_H2D_COMMON_MSGRINGS;
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_NROF_H2D_COMMON_MSGRINGS;
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->nrof_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_NROF_H2D_COMMON_MSGRINGS);
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->nrof_flowrings >= BRCMF_FLOWRING_HASHSIZE) {
1429 brcmf_err("driver not configured for this many flowrings %d\n",
1430 if_msgbuf->nrof_flowrings);
1431 if_msgbuf->nrof_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->nrof_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->txdata = brcmf_msgbuf_txdata;
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->nrof_flowrings = if_msgbuf->nrof_flowrings;
1481 msgbuf->flowring_dma_handle = kzalloc(msgbuf->nrof_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->nrof_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 }
Linux kernel - Deliverables
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