1 // SPDX-License-Identifier: ISC
2 /*
3 * Copyright (c) 2014 Broadcom Corporation
4 */
5
6 /*******************************************************************************
7 * Communicates with the dongle by using dcmd codes.
8 * For certain dcmd codes, the dongle interprets string data from the host.
9 ******************************************************************************/
10
11 #include <linux/types.h>
12 #include <linux/netdevice.h>
13 #include <linux/etherdevice.h>
14
15 #include <brcmu_utils.h>
16 #include <brcmu_wifi.h>
17
18 #include "core.h"
19 #include "debug.h"
20 #include "proto.h"
21 #include "msgbuf.h"
22 #include "commonring.h"
23 #include "flowring.h"
24 #include "bus.h"
25 #include "tracepoint.h"
26
27
28 #define MSGBUF_IOCTL_RESP_TIMEOUT msecs_to_jiffies(2000)
29
30 #define MSGBUF_TYPE_GEN_STATUS 0x1
31 #define MSGBUF_TYPE_RING_STATUS 0x2
32 #define MSGBUF_TYPE_FLOW_RING_CREATE 0x3
33 #define MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT 0x4
34 #define MSGBUF_TYPE_FLOW_RING_DELETE 0x5
35 #define MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT 0x6
36 #define MSGBUF_TYPE_FLOW_RING_FLUSH 0x7
37 #define MSGBUF_TYPE_FLOW_RING_FLUSH_CMPLT 0x8
38 #define MSGBUF_TYPE_IOCTLPTR_REQ 0x9
39 #define MSGBUF_TYPE_IOCTLPTR_REQ_ACK 0xA
40 #define MSGBUF_TYPE_IOCTLRESP_BUF_POST 0xB
41 #define MSGBUF_TYPE_IOCTL_CMPLT 0xC
42 #define MSGBUF_TYPE_EVENT_BUF_POST 0xD
43 #define MSGBUF_TYPE_WL_EVENT 0xE
44 #define MSGBUF_TYPE_TX_POST 0xF
45 #define MSGBUF_TYPE_TX_STATUS 0x10
46 #define MSGBUF_TYPE_RXBUF_POST 0x11
47 #define MSGBUF_TYPE_RX_CMPLT 0x12
48 #define MSGBUF_TYPE_LPBK_DMAXFER 0x13
49 #define MSGBUF_TYPE_LPBK_DMAXFER_CMPLT 0x14
50
51 #define NR_TX_PKTIDS 2048
52 #define NR_RX_PKTIDS 1024
53
54 #define BRCMF_IOCTL_REQ_PKTID 0xFFFE
55
56 #define BRCMF_MSGBUF_MAX_PKT_SIZE 2048
57 #define BRCMF_MSGBUF_MAX_CTL_PKT_SIZE 8192
58 #define BRCMF_MSGBUF_RXBUFPOST_THRESHOLD 32
59 #define BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST 8
60 #define BRCMF_MSGBUF_MAX_EVENTBUF_POST 8
61
62 #define BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3 0x01
63 #define BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_11 0x02
64 #define BRCMF_MSGBUF_PKT_FLAGS_FRAME_MASK 0x07
65 #define BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT 5
66
67 #define BRCMF_MSGBUF_TX_FLUSH_CNT1 32
68 #define BRCMF_MSGBUF_TX_FLUSH_CNT2 96
69
70 #define BRCMF_MSGBUF_DELAY_TXWORKER_THRS 96
71 #define BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS 32
72 #define BRCMF_MSGBUF_UPDATE_RX_PTR_THRS 48
73
74
75 struct msgbuf_common_hdr {
76 u8 msgtype;
77 u8 ifidx;
78 u8 flags;
79 u8 rsvd0;
80 __le32 request_id;
81 };
82
83 struct msgbuf_ioctl_req_hdr {
84 struct msgbuf_common_hdr msg;
85 __le32 cmd;
86 __le16 trans_id;
87 __le16 input_buf_len;
88 __le16 output_buf_len;
89 __le16 rsvd0[3];
90 struct msgbuf_buf_addr req_buf_addr;
91 __le32 rsvd1[2];
92 };
93
94 struct msgbuf_tx_msghdr {
95 struct msgbuf_common_hdr msg;
96 u8 txhdr[ETH_HLEN];
97 u8 flags;
98 u8 seg_cnt;
99 struct msgbuf_buf_addr metadata_buf_addr;
100 struct msgbuf_buf_addr data_buf_addr;
101 __le16 metadata_buf_len;
102 __le16 data_len;
103 __le32 rsvd0;
104 };
105
106 struct msgbuf_rx_bufpost {
107 struct msgbuf_common_hdr msg;
108 __le16 metadata_buf_len;
109 __le16 data_buf_len;
110 __le32 rsvd0;
111 struct msgbuf_buf_addr metadata_buf_addr;
112 struct msgbuf_buf_addr data_buf_addr;
113 };
114
115 struct msgbuf_rx_ioctl_resp_or_event {
116 struct msgbuf_common_hdr msg;
117 __le16 host_buf_len;
118 __le16 rsvd0[3];
119 struct msgbuf_buf_addr host_buf_addr;
120 __le32 rsvd1[4];
121 };
122
123 struct msgbuf_completion_hdr {
124 __le16 status;
125 __le16 flow_ring_id;
126 };
127
128 /* Data struct for the MSGBUF_TYPE_GEN_STATUS */
129 struct msgbuf_gen_status {
130 struct msgbuf_common_hdr msg;
131 struct msgbuf_completion_hdr compl_hdr;
132 __le16 write_idx;
133 __le32 rsvd0[3];
134 };
135
136 /* Data struct for the MSGBUF_TYPE_RING_STATUS */
137 struct msgbuf_ring_status {
138 struct msgbuf_common_hdr msg;
139 struct msgbuf_completion_hdr compl_hdr;
140 __le16 write_idx;
141 __le16 rsvd0[5];
142 };
143
144 struct msgbuf_rx_event {
145 struct msgbuf_common_hdr msg;
146 struct msgbuf_completion_hdr compl_hdr;
147 __le16 event_data_len;
148 __le16 seqnum;
149 __le16 rsvd0[4];
150 };
151
152 struct msgbuf_ioctl_resp_hdr {
153 struct msgbuf_common_hdr msg;
154 struct msgbuf_completion_hdr compl_hdr;
155 __le16 resp_len;
156 __le16 trans_id;
157 __le32 cmd;
158 __le32 rsvd0;
159 };
160
161 struct msgbuf_tx_status {
162 struct msgbuf_common_hdr msg;
163 struct msgbuf_completion_hdr compl_hdr;
164 __le16 metadata_len;
165 __le16 tx_status;
166 };
167
168 struct msgbuf_rx_complete {
169 struct msgbuf_common_hdr msg;
170 struct msgbuf_completion_hdr compl_hdr;
171 __le16 metadata_len;
172 __le16 data_len;
173 __le16 data_offset;
174 __le16 flags;
175 __le32 rx_status_0;
176 __le32 rx_status_1;
177 __le32 rsvd0;
178 };
179
180 struct msgbuf_tx_flowring_create_req {
181 struct msgbuf_common_hdr msg;
182 u8 da[ETH_ALEN];
183 u8 sa[ETH_ALEN];
184 u8 tid;
185 u8 if_flags;
186 __le16 flow_ring_id;
187 u8 tc;
188 u8 priority;
189 __le16 int_vector;
190 __le16 max_items;
191 __le16 len_item;
192 struct msgbuf_buf_addr flow_ring_addr;
193 };
194
195 struct msgbuf_tx_flowring_delete_req {
196 struct msgbuf_common_hdr msg;
197 __le16 flow_ring_id;
198 __le16 reason;
199 __le32 rsvd0[7];
200 };
201
202 struct msgbuf_flowring_create_resp {
203 struct msgbuf_common_hdr msg;
204 struct msgbuf_completion_hdr compl_hdr;
205 __le32 rsvd0[3];
206 };
207
208 struct msgbuf_flowring_delete_resp {
209 struct msgbuf_common_hdr msg;
210 struct msgbuf_completion_hdr compl_hdr;
211 __le32 rsvd0[3];
212 };
213
214 struct msgbuf_flowring_flush_resp {
215 struct msgbuf_common_hdr msg;
216 struct msgbuf_completion_hdr compl_hdr;
217 __le32 rsvd0[3];
218 };
219
220 struct brcmf_msgbuf_work_item {
221 struct list_head queue;
222 u32 flowid;
223 int ifidx;
224 u8 sa[ETH_ALEN];
225 u8 da[ETH_ALEN];
226 };
227
228 struct brcmf_msgbuf {
229 struct brcmf_pub *drvr;
230
231 struct brcmf_commonring **commonrings;
232 struct brcmf_commonring **flowrings;
233 dma_addr_t *flowring_dma_handle;
234
235 u16 max_flowrings;
236 u16 max_submissionrings;
237 u16 max_completionrings;
238
239 u16 rx_dataoffset;
240 u32 max_rxbufpost;
241 u16 rx_metadata_offset;
242 u32 rxbufpost;
243
244 u32 max_ioctlrespbuf;
245 u32 cur_ioctlrespbuf;
246 u32 max_eventbuf;
247 u32 cur_eventbuf;
248
249 void *ioctbuf;
250 dma_addr_t ioctbuf_handle;
251 u32 ioctbuf_phys_hi;
252 u32 ioctbuf_phys_lo;
253 int ioctl_resp_status;
254 u32 ioctl_resp_ret_len;
255 u32 ioctl_resp_pktid;
256
257 u16 data_seq_no;
258 u16 ioctl_seq_no;
259 u32 reqid;
260 wait_queue_head_t ioctl_resp_wait;
261 bool ctl_completed;
262
263 struct brcmf_msgbuf_pktids *tx_pktids;
264 struct brcmf_msgbuf_pktids *rx_pktids;
265 struct brcmf_flowring *flow;
266
267 struct workqueue_struct *txflow_wq;
268 struct work_struct txflow_work;
269 unsigned long *flow_map;
270 unsigned long *txstatus_done_map;
271
272 struct work_struct flowring_work;
273 spinlock_t flowring_work_lock;
274 struct list_head work_queue;
275 };
276
277 struct brcmf_msgbuf_pktid {
278 atomic_t allocated;
279 u16 data_offset;
280 struct sk_buff *skb;
281 dma_addr_t physaddr;
282 };
283
284 struct brcmf_msgbuf_pktids {
285 u32 array_size;
286 u32 last_allocated_idx;
287 enum dma_data_direction direction;
288 struct brcmf_msgbuf_pktid *array;
289 };
290
291 static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf);
292
293
294 static struct brcmf_msgbuf_pktids *
brcmf_msgbuf_init_pktids(u32 nr_array_entries,enum dma_data_direction direction)295 brcmf_msgbuf_init_pktids(u32 nr_array_entries,
296 enum dma_data_direction direction)
297 {
298 struct brcmf_msgbuf_pktid *array;
299 struct brcmf_msgbuf_pktids *pktids;
300
301 array = kcalloc(nr_array_entries, sizeof(*array), GFP_KERNEL);
302 if (!array)
303 return NULL;
304
305 pktids = kzalloc(sizeof(*pktids), GFP_KERNEL);
306 if (!pktids) {
307 kfree(array);
308 return NULL;
309 }
310 pktids->array = array;
311 pktids->array_size = nr_array_entries;
312
313 return pktids;
314 }
315
316
317 static int
brcmf_msgbuf_alloc_pktid(struct device * dev,struct brcmf_msgbuf_pktids * pktids,struct sk_buff * skb,u16 data_offset,dma_addr_t * physaddr,u32 * idx)318 brcmf_msgbuf_alloc_pktid(struct device *dev,
319 struct brcmf_msgbuf_pktids *pktids,
320 struct sk_buff *skb, u16 data_offset,
321 dma_addr_t *physaddr, u32 *idx)
322 {
323 struct brcmf_msgbuf_pktid *array;
324 u32 count;
325
326 array = pktids->array;
327
328 *physaddr = dma_map_single(dev, skb->data + data_offset,
329 skb->len - data_offset, pktids->direction);
330
331 if (dma_mapping_error(dev, *physaddr)) {
332 brcmf_err("dma_map_single failed !!\n");
333 return -ENOMEM;
334 }
335
336 *idx = pktids->last_allocated_idx;
337
338 count = 0;
339 do {
340 (*idx)++;
341 if (*idx == pktids->array_size)
342 *idx = 0;
343 if (array[*idx].allocated.counter == 0)
344 if (atomic_cmpxchg(&array[*idx].allocated, 0, 1) == 0)
345 break;
346 count++;
347 } while (count < pktids->array_size);
348
349 if (count == pktids->array_size) {
350 dma_unmap_single(dev, *physaddr, skb->len - data_offset,
351 pktids->direction);
352 return -ENOMEM;
353 }
354
355 array[*idx].data_offset = data_offset;
356 array[*idx].physaddr = *physaddr;
357 array[*idx].skb = skb;
358
359 pktids->last_allocated_idx = *idx;
360
361 return 0;
362 }
363
364
365 static struct sk_buff *
brcmf_msgbuf_get_pktid(struct device * dev,struct brcmf_msgbuf_pktids * pktids,u32 idx)366 brcmf_msgbuf_get_pktid(struct device *dev, struct brcmf_msgbuf_pktids *pktids,
367 u32 idx)
368 {
369 struct brcmf_msgbuf_pktid *pktid;
370 struct sk_buff *skb;
371
372 if (idx >= pktids->array_size) {
373 brcmf_err("Invalid packet id %d (max %d)\n", idx,
374 pktids->array_size);
375 return NULL;
376 }
377 if (pktids->array[idx].allocated.counter) {
378 pktid = &pktids->array[idx];
379 dma_unmap_single(dev, pktid->physaddr,
380 pktid->skb->len - pktid->data_offset,
381 pktids->direction);
382 skb = pktid->skb;
383 pktid->allocated.counter = 0;
384 return skb;
385 } else {
386 brcmf_err("Invalid packet id %d (not in use)\n", idx);
387 }
388
389 return NULL;
390 }
391
392
393 static void
brcmf_msgbuf_release_array(struct device * dev,struct brcmf_msgbuf_pktids * pktids)394 brcmf_msgbuf_release_array(struct device *dev,
395 struct brcmf_msgbuf_pktids *pktids)
396 {
397 struct brcmf_msgbuf_pktid *array;
398 struct brcmf_msgbuf_pktid *pktid;
399 u32 count;
400
401 array = pktids->array;
402 count = 0;
403 do {
404 if (array[count].allocated.counter) {
405 pktid = &array[count];
406 dma_unmap_single(dev, pktid->physaddr,
407 pktid->skb->len - pktid->data_offset,
408 pktids->direction);
409 brcmu_pkt_buf_free_skb(pktid->skb);
410 }
411 count++;
412 } while (count < pktids->array_size);
413
414 kfree(array);
415 kfree(pktids);
416 }
417
418
brcmf_msgbuf_release_pktids(struct brcmf_msgbuf * msgbuf)419 static void brcmf_msgbuf_release_pktids(struct brcmf_msgbuf *msgbuf)
420 {
421 if (msgbuf->rx_pktids)
422 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
423 msgbuf->rx_pktids);
424 if (msgbuf->tx_pktids)
425 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
426 msgbuf->tx_pktids);
427 }
428
429
brcmf_msgbuf_tx_ioctl(struct brcmf_pub * drvr,int ifidx,uint cmd,void * buf,uint len)430 static int brcmf_msgbuf_tx_ioctl(struct brcmf_pub *drvr, int ifidx,
431 uint cmd, void *buf, uint len)
432 {
433 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
434 struct brcmf_commonring *commonring;
435 struct msgbuf_ioctl_req_hdr *request;
436 u16 buf_len;
437 void *ret_ptr;
438 int err;
439
440 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
441 brcmf_commonring_lock(commonring);
442 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
443 if (!ret_ptr) {
444 bphy_err(drvr, "Failed to reserve space in commonring\n");
445 brcmf_commonring_unlock(commonring);
446 return -ENOMEM;
447 }
448
449 msgbuf->reqid++;
450
451 request = (struct msgbuf_ioctl_req_hdr *)ret_ptr;
452 request->msg.msgtype = MSGBUF_TYPE_IOCTLPTR_REQ;
453 request->msg.ifidx = (u8)ifidx;
454 request->msg.flags = 0;
455 request->msg.request_id = cpu_to_le32(BRCMF_IOCTL_REQ_PKTID);
456 request->cmd = cpu_to_le32(cmd);
457 request->output_buf_len = cpu_to_le16(len);
458 request->trans_id = cpu_to_le16(msgbuf->reqid);
459
460 buf_len = min_t(u16, len, BRCMF_TX_IOCTL_MAX_MSG_SIZE);
461 request->input_buf_len = cpu_to_le16(buf_len);
462 request->req_buf_addr.high_addr = cpu_to_le32(msgbuf->ioctbuf_phys_hi);
463 request->req_buf_addr.low_addr = cpu_to_le32(msgbuf->ioctbuf_phys_lo);
464 if (buf)
465 memcpy(msgbuf->ioctbuf, buf, buf_len);
466 else
467 memset(msgbuf->ioctbuf, 0, buf_len);
468
469 err = brcmf_commonring_write_complete(commonring);
470 brcmf_commonring_unlock(commonring);
471
472 return err;
473 }
474
475
brcmf_msgbuf_ioctl_resp_wait(struct brcmf_msgbuf * msgbuf)476 static int brcmf_msgbuf_ioctl_resp_wait(struct brcmf_msgbuf *msgbuf)
477 {
478 return wait_event_timeout(msgbuf->ioctl_resp_wait,
479 msgbuf->ctl_completed,
480 MSGBUF_IOCTL_RESP_TIMEOUT);
481 }
482
483
brcmf_msgbuf_ioctl_resp_wake(struct brcmf_msgbuf * msgbuf)484 static void brcmf_msgbuf_ioctl_resp_wake(struct brcmf_msgbuf *msgbuf)
485 {
486 msgbuf->ctl_completed = true;
487 wake_up(&msgbuf->ioctl_resp_wait);
488 }
489
490
brcmf_msgbuf_query_dcmd(struct brcmf_pub * drvr,int ifidx,uint cmd,void * buf,uint len,int * fwerr)491 static int brcmf_msgbuf_query_dcmd(struct brcmf_pub *drvr, int ifidx,
492 uint cmd, void *buf, uint len, int *fwerr)
493 {
494 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
495 struct sk_buff *skb = NULL;
496 int timeout;
497 int err;
498
499 brcmf_dbg(MSGBUF, "ifidx=%d, cmd=%d, len=%d\n", ifidx, cmd, len);
500 *fwerr = 0;
501 msgbuf->ctl_completed = false;
502 err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
503 if (err)
504 return err;
505
506 timeout = brcmf_msgbuf_ioctl_resp_wait(msgbuf);
507 if (!timeout) {
508 bphy_err(drvr, "Timeout on response for query command\n");
509 return -EIO;
510 }
511
512 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
513 msgbuf->rx_pktids,
514 msgbuf->ioctl_resp_pktid);
515 if (msgbuf->ioctl_resp_ret_len != 0) {
516 if (!skb)
517 return -EBADF;
518
519 memcpy(buf, skb->data, (len < msgbuf->ioctl_resp_ret_len) ?
520 len : msgbuf->ioctl_resp_ret_len);
521 }
522 brcmu_pkt_buf_free_skb(skb);
523
524 *fwerr = msgbuf->ioctl_resp_status;
525 return 0;
526 }
527
528
brcmf_msgbuf_set_dcmd(struct brcmf_pub * drvr,int ifidx,uint cmd,void * buf,uint len,int * fwerr)529 static int brcmf_msgbuf_set_dcmd(struct brcmf_pub *drvr, int ifidx,
530 uint cmd, void *buf, uint len, int *fwerr)
531 {
532 return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len, fwerr);
533 }
534
535
brcmf_msgbuf_hdrpull(struct brcmf_pub * drvr,bool do_fws,struct sk_buff * skb,struct brcmf_if ** ifp)536 static int brcmf_msgbuf_hdrpull(struct brcmf_pub *drvr, bool do_fws,
537 struct sk_buff *skb, struct brcmf_if **ifp)
538 {
539 return -ENODEV;
540 }
541
brcmf_msgbuf_rxreorder(struct brcmf_if * ifp,struct sk_buff * skb,bool inirq)542 static void brcmf_msgbuf_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb,
543 bool inirq)
544 {
545 }
546
547 static void
brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf * msgbuf,u16 flowid)548 brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf *msgbuf, u16 flowid)
549 {
550 u32 dma_sz;
551 void *dma_buf;
552
553 brcmf_dbg(MSGBUF, "Removing flowring %d\n", flowid);
554
555 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
556 dma_buf = msgbuf->flowrings[flowid]->buf_addr;
557 dma_free_coherent(msgbuf->drvr->bus_if->dev, dma_sz, dma_buf,
558 msgbuf->flowring_dma_handle[flowid]);
559
560 brcmf_flowring_delete(msgbuf->flow, flowid);
561 }
562
563
564 static struct brcmf_msgbuf_work_item *
brcmf_msgbuf_dequeue_work(struct brcmf_msgbuf * msgbuf)565 brcmf_msgbuf_dequeue_work(struct brcmf_msgbuf *msgbuf)
566 {
567 struct brcmf_msgbuf_work_item *work = NULL;
568 ulong flags;
569
570 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
571 if (!list_empty(&msgbuf->work_queue)) {
572 work = list_first_entry(&msgbuf->work_queue,
573 struct brcmf_msgbuf_work_item, queue);
574 list_del(&work->queue);
575 }
576 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
577
578 return work;
579 }
580
581
582 static u32
brcmf_msgbuf_flowring_create_worker(struct brcmf_msgbuf * msgbuf,struct brcmf_msgbuf_work_item * work)583 brcmf_msgbuf_flowring_create_worker(struct brcmf_msgbuf *msgbuf,
584 struct brcmf_msgbuf_work_item *work)
585 {
586 struct brcmf_pub *drvr = msgbuf->drvr;
587 struct msgbuf_tx_flowring_create_req *create;
588 struct brcmf_commonring *commonring;
589 void *ret_ptr;
590 u32 flowid;
591 void *dma_buf;
592 u32 dma_sz;
593 u64 address;
594 int err;
595
596 flowid = work->flowid;
597 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
598 dma_buf = dma_alloc_coherent(msgbuf->drvr->bus_if->dev, dma_sz,
599 &msgbuf->flowring_dma_handle[flowid],
600 GFP_KERNEL);
601 if (!dma_buf) {
602 bphy_err(drvr, "dma_alloc_coherent failed\n");
603 brcmf_flowring_delete(msgbuf->flow, flowid);
604 return BRCMF_FLOWRING_INVALID_ID;
605 }
606
607 brcmf_commonring_config(msgbuf->flowrings[flowid],
608 BRCMF_H2D_TXFLOWRING_MAX_ITEM,
609 BRCMF_H2D_TXFLOWRING_ITEMSIZE, dma_buf);
610
611 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
612 brcmf_commonring_lock(commonring);
613 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
614 if (!ret_ptr) {
615 bphy_err(drvr, "Failed to reserve space in commonring\n");
616 brcmf_commonring_unlock(commonring);
617 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
618 return BRCMF_FLOWRING_INVALID_ID;
619 }
620
621 create = (struct msgbuf_tx_flowring_create_req *)ret_ptr;
622 create->msg.msgtype = MSGBUF_TYPE_FLOW_RING_CREATE;
623 create->msg.ifidx = work->ifidx;
624 create->msg.request_id = 0;
625 create->tid = brcmf_flowring_tid(msgbuf->flow, flowid);
626 create->flow_ring_id = cpu_to_le16(flowid +
627 BRCMF_H2D_MSGRING_FLOWRING_IDSTART);
628 memcpy(create->sa, work->sa, ETH_ALEN);
629 memcpy(create->da, work->da, ETH_ALEN);
630 address = (u64)msgbuf->flowring_dma_handle[flowid];
631 create->flow_ring_addr.high_addr = cpu_to_le32(address >> 32);
632 create->flow_ring_addr.low_addr = cpu_to_le32(address & 0xffffffff);
633 create->max_items = cpu_to_le16(BRCMF_H2D_TXFLOWRING_MAX_ITEM);
634 create->len_item = cpu_to_le16(BRCMF_H2D_TXFLOWRING_ITEMSIZE);
635
636 brcmf_dbg(MSGBUF, "Send Flow Create Req flow ID %d for peer %pM prio %d ifindex %d\n",
637 flowid, work->da, create->tid, work->ifidx);
638
639 err = brcmf_commonring_write_complete(commonring);
640 brcmf_commonring_unlock(commonring);
641 if (err) {
642 bphy_err(drvr, "Failed to write commonring\n");
643 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
644 return BRCMF_FLOWRING_INVALID_ID;
645 }
646
647 return flowid;
648 }
649
650
brcmf_msgbuf_flowring_worker(struct work_struct * work)651 static void brcmf_msgbuf_flowring_worker(struct work_struct *work)
652 {
653 struct brcmf_msgbuf *msgbuf;
654 struct brcmf_msgbuf_work_item *create;
655
656 msgbuf = container_of(work, struct brcmf_msgbuf, flowring_work);
657
658 while ((create = brcmf_msgbuf_dequeue_work(msgbuf))) {
659 brcmf_msgbuf_flowring_create_worker(msgbuf, create);
660 kfree(create);
661 }
662 }
663
664
brcmf_msgbuf_flowring_create(struct brcmf_msgbuf * msgbuf,int ifidx,struct sk_buff * skb)665 static u32 brcmf_msgbuf_flowring_create(struct brcmf_msgbuf *msgbuf, int ifidx,
666 struct sk_buff *skb)
667 {
668 struct brcmf_msgbuf_work_item *create;
669 struct ethhdr *eh = (struct ethhdr *)(skb->data);
670 u32 flowid;
671 ulong flags;
672
673 create = kzalloc(sizeof(*create), GFP_ATOMIC);
674 if (create == NULL)
675 return BRCMF_FLOWRING_INVALID_ID;
676
677 flowid = brcmf_flowring_create(msgbuf->flow, eh->h_dest,
678 skb->priority, ifidx);
679 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
680 kfree(create);
681 return flowid;
682 }
683
684 create->flowid = flowid;
685 create->ifidx = ifidx;
686 memcpy(create->sa, eh->h_source, ETH_ALEN);
687 memcpy(create->da, eh->h_dest, ETH_ALEN);
688
689 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
690 list_add_tail(&create->queue, &msgbuf->work_queue);
691 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
692 schedule_work(&msgbuf->flowring_work);
693
694 return flowid;
695 }
696
697
brcmf_msgbuf_txflow(struct brcmf_msgbuf * msgbuf,u16 flowid)698 static void brcmf_msgbuf_txflow(struct brcmf_msgbuf *msgbuf, u16 flowid)
699 {
700 struct brcmf_flowring *flow = msgbuf->flow;
701 struct brcmf_pub *drvr = msgbuf->drvr;
702 struct brcmf_commonring *commonring;
703 void *ret_ptr;
704 u32 count;
705 struct sk_buff *skb;
706 dma_addr_t physaddr;
707 u32 pktid;
708 struct msgbuf_tx_msghdr *tx_msghdr;
709 u64 address;
710
711 commonring = msgbuf->flowrings[flowid];
712 if (!brcmf_commonring_write_available(commonring))
713 return;
714
715 brcmf_commonring_lock(commonring);
716
717 count = BRCMF_MSGBUF_TX_FLUSH_CNT2 - BRCMF_MSGBUF_TX_FLUSH_CNT1;
718 while (brcmf_flowring_qlen(flow, flowid)) {
719 skb = brcmf_flowring_dequeue(flow, flowid);
720 if (skb == NULL) {
721 bphy_err(drvr, "No SKB, but qlen %d\n",
722 brcmf_flowring_qlen(flow, flowid));
723 break;
724 }
725 skb_orphan(skb);
726 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
727 msgbuf->tx_pktids, skb, ETH_HLEN,
728 &physaddr, &pktid)) {
729 brcmf_flowring_reinsert(flow, flowid, skb);
730 bphy_err(drvr, "No PKTID available !!\n");
731 break;
732 }
733 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
734 if (!ret_ptr) {
735 brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
736 msgbuf->tx_pktids, pktid);
737 brcmf_flowring_reinsert(flow, flowid, skb);
738 break;
739 }
740 count++;
741
742 tx_msghdr = (struct msgbuf_tx_msghdr *)ret_ptr;
743
744 tx_msghdr->msg.msgtype = MSGBUF_TYPE_TX_POST;
745 tx_msghdr->msg.request_id = cpu_to_le32(pktid + 1);
746 tx_msghdr->msg.ifidx = brcmf_flowring_ifidx_get(flow, flowid);
747 tx_msghdr->flags = BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3;
748 tx_msghdr->flags |= (skb->priority & 0x07) <<
749 BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT;
750 tx_msghdr->seg_cnt = 1;
751 memcpy(tx_msghdr->txhdr, skb->data, ETH_HLEN);
752 tx_msghdr->data_len = cpu_to_le16(skb->len - ETH_HLEN);
753 address = (u64)physaddr;
754 tx_msghdr->data_buf_addr.high_addr = cpu_to_le32(address >> 32);
755 tx_msghdr->data_buf_addr.low_addr =
756 cpu_to_le32(address & 0xffffffff);
757 tx_msghdr->metadata_buf_len = 0;
758 tx_msghdr->metadata_buf_addr.high_addr = 0;
759 tx_msghdr->metadata_buf_addr.low_addr = 0;
760 atomic_inc(&commonring->outstanding_tx);
761 if (count >= BRCMF_MSGBUF_TX_FLUSH_CNT2) {
762 brcmf_commonring_write_complete(commonring);
763 count = 0;
764 }
765 }
766 if (count)
767 brcmf_commonring_write_complete(commonring);
768 brcmf_commonring_unlock(commonring);
769 }
770
771
brcmf_msgbuf_txflow_worker(struct work_struct * worker)772 static void brcmf_msgbuf_txflow_worker(struct work_struct *worker)
773 {
774 struct brcmf_msgbuf *msgbuf;
775 u32 flowid;
776
777 msgbuf = container_of(worker, struct brcmf_msgbuf, txflow_work);
778 for_each_set_bit(flowid, msgbuf->flow_map, msgbuf->max_flowrings) {
779 clear_bit(flowid, msgbuf->flow_map);
780 brcmf_msgbuf_txflow(msgbuf, flowid);
781 }
782 }
783
784
brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf * msgbuf,u32 flowid,bool force)785 static int brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf *msgbuf, u32 flowid,
786 bool force)
787 {
788 struct brcmf_commonring *commonring;
789
790 set_bit(flowid, msgbuf->flow_map);
791 commonring = msgbuf->flowrings[flowid];
792 if ((force) || (atomic_read(&commonring->outstanding_tx) <
793 BRCMF_MSGBUF_DELAY_TXWORKER_THRS))
794 queue_work(msgbuf->txflow_wq, &msgbuf->txflow_work);
795
796 return 0;
797 }
798
799
brcmf_msgbuf_tx_queue_data(struct brcmf_pub * drvr,int ifidx,struct sk_buff * skb)800 static int brcmf_msgbuf_tx_queue_data(struct brcmf_pub *drvr, int ifidx,
801 struct sk_buff *skb)
802 {
803 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
804 struct brcmf_flowring *flow = msgbuf->flow;
805 struct ethhdr *eh = (struct ethhdr *)(skb->data);
806 u32 flowid;
807 u32 queue_count;
808 bool force;
809
810 flowid = brcmf_flowring_lookup(flow, eh->h_dest, skb->priority, ifidx);
811 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
812 flowid = brcmf_msgbuf_flowring_create(msgbuf, ifidx, skb);
813 if (flowid == BRCMF_FLOWRING_INVALID_ID)
814 return -ENOMEM;
815 }
816 queue_count = brcmf_flowring_enqueue(flow, flowid, skb);
817 force = ((queue_count % BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) == 0);
818 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, force);
819
820 return 0;
821 }
822
823
824 static void
brcmf_msgbuf_configure_addr_mode(struct brcmf_pub * drvr,int ifidx,enum proto_addr_mode addr_mode)825 brcmf_msgbuf_configure_addr_mode(struct brcmf_pub *drvr, int ifidx,
826 enum proto_addr_mode addr_mode)
827 {
828 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
829
830 brcmf_flowring_configure_addr_mode(msgbuf->flow, ifidx, addr_mode);
831 }
832
833
834 static void
brcmf_msgbuf_delete_peer(struct brcmf_pub * drvr,int ifidx,u8 peer[ETH_ALEN])835 brcmf_msgbuf_delete_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
836 {
837 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
838
839 brcmf_flowring_delete_peer(msgbuf->flow, ifidx, peer);
840 }
841
842
843 static void
brcmf_msgbuf_add_tdls_peer(struct brcmf_pub * drvr,int ifidx,u8 peer[ETH_ALEN])844 brcmf_msgbuf_add_tdls_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
845 {
846 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
847
848 brcmf_flowring_add_tdls_peer(msgbuf->flow, ifidx, peer);
849 }
850
851
852 static void
brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf * msgbuf,void * buf)853 brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf *msgbuf, void *buf)
854 {
855 struct msgbuf_ioctl_resp_hdr *ioctl_resp;
856
857 ioctl_resp = (struct msgbuf_ioctl_resp_hdr *)buf;
858
859 msgbuf->ioctl_resp_status =
860 (s16)le16_to_cpu(ioctl_resp->compl_hdr.status);
861 msgbuf->ioctl_resp_ret_len = le16_to_cpu(ioctl_resp->resp_len);
862 msgbuf->ioctl_resp_pktid = le32_to_cpu(ioctl_resp->msg.request_id);
863
864 brcmf_msgbuf_ioctl_resp_wake(msgbuf);
865
866 if (msgbuf->cur_ioctlrespbuf)
867 msgbuf->cur_ioctlrespbuf--;
868 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
869 }
870
871
872 static void
brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf * msgbuf,void * buf)873 brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf *msgbuf, void *buf)
874 {
875 struct brcmf_commonring *commonring;
876 struct msgbuf_tx_status *tx_status;
877 u32 idx;
878 struct sk_buff *skb;
879 u16 flowid;
880
881 tx_status = (struct msgbuf_tx_status *)buf;
882 idx = le32_to_cpu(tx_status->msg.request_id) - 1;
883 flowid = le16_to_cpu(tx_status->compl_hdr.flow_ring_id);
884 flowid -= BRCMF_H2D_MSGRING_FLOWRING_IDSTART;
885 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
886 msgbuf->tx_pktids, idx);
887 if (!skb)
888 return;
889
890 set_bit(flowid, msgbuf->txstatus_done_map);
891 commonring = msgbuf->flowrings[flowid];
892 atomic_dec(&commonring->outstanding_tx);
893
894 brcmf_txfinalize(brcmf_get_ifp(msgbuf->drvr, tx_status->msg.ifidx),
895 skb, true);
896 }
897
898
brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf * msgbuf,u32 count)899 static u32 brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf *msgbuf, u32 count)
900 {
901 struct brcmf_pub *drvr = msgbuf->drvr;
902 struct brcmf_commonring *commonring;
903 void *ret_ptr;
904 struct sk_buff *skb;
905 u16 alloced;
906 u32 pktlen;
907 dma_addr_t physaddr;
908 struct msgbuf_rx_bufpost *rx_bufpost;
909 u64 address;
910 u32 pktid;
911 u32 i;
912
913 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
914 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
915 count,
916 &alloced);
917 if (!ret_ptr) {
918 brcmf_dbg(MSGBUF, "Failed to reserve space in commonring\n");
919 return 0;
920 }
921
922 for (i = 0; i < alloced; i++) {
923 rx_bufpost = (struct msgbuf_rx_bufpost *)ret_ptr;
924 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
925
926 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
927
928 if (skb == NULL) {
929 bphy_err(drvr, "Failed to alloc SKB\n");
930 brcmf_commonring_write_cancel(commonring, alloced - i);
931 break;
932 }
933
934 pktlen = skb->len;
935 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
936 msgbuf->rx_pktids, skb, 0,
937 &physaddr, &pktid)) {
938 dev_kfree_skb_any(skb);
939 bphy_err(drvr, "No PKTID available !!\n");
940 brcmf_commonring_write_cancel(commonring, alloced - i);
941 break;
942 }
943
944 if (msgbuf->rx_metadata_offset) {
945 address = (u64)physaddr;
946 rx_bufpost->metadata_buf_len =
947 cpu_to_le16(msgbuf->rx_metadata_offset);
948 rx_bufpost->metadata_buf_addr.high_addr =
949 cpu_to_le32(address >> 32);
950 rx_bufpost->metadata_buf_addr.low_addr =
951 cpu_to_le32(address & 0xffffffff);
952
953 skb_pull(skb, msgbuf->rx_metadata_offset);
954 pktlen = skb->len;
955 physaddr += msgbuf->rx_metadata_offset;
956 }
957 rx_bufpost->msg.msgtype = MSGBUF_TYPE_RXBUF_POST;
958 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
959
960 address = (u64)physaddr;
961 rx_bufpost->data_buf_len = cpu_to_le16((u16)pktlen);
962 rx_bufpost->data_buf_addr.high_addr =
963 cpu_to_le32(address >> 32);
964 rx_bufpost->data_buf_addr.low_addr =
965 cpu_to_le32(address & 0xffffffff);
966
967 ret_ptr += brcmf_commonring_len_item(commonring);
968 }
969
970 if (i)
971 brcmf_commonring_write_complete(commonring);
972
973 return i;
974 }
975
976
977 static void
brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf * msgbuf)978 brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf *msgbuf)
979 {
980 u32 fillbufs;
981 u32 retcount;
982
983 fillbufs = msgbuf->max_rxbufpost - msgbuf->rxbufpost;
984
985 while (fillbufs) {
986 retcount = brcmf_msgbuf_rxbuf_data_post(msgbuf, fillbufs);
987 if (!retcount)
988 break;
989 msgbuf->rxbufpost += retcount;
990 fillbufs -= retcount;
991 }
992 }
993
994
995 static void
brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf * msgbuf,u16 rxcnt)996 brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf *msgbuf, u16 rxcnt)
997 {
998 msgbuf->rxbufpost -= rxcnt;
999 if (msgbuf->rxbufpost <= (msgbuf->max_rxbufpost -
1000 BRCMF_MSGBUF_RXBUFPOST_THRESHOLD))
1001 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
1002 }
1003
1004
1005 static u32
brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf * msgbuf,bool event_buf,u32 count)1006 brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf *msgbuf, bool event_buf,
1007 u32 count)
1008 {
1009 struct brcmf_pub *drvr = msgbuf->drvr;
1010 struct brcmf_commonring *commonring;
1011 void *ret_ptr;
1012 struct sk_buff *skb;
1013 u16 alloced;
1014 u32 pktlen;
1015 dma_addr_t physaddr;
1016 struct msgbuf_rx_ioctl_resp_or_event *rx_bufpost;
1017 u64 address;
1018 u32 pktid;
1019 u32 i;
1020
1021 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1022 brcmf_commonring_lock(commonring);
1023 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
1024 count,
1025 &alloced);
1026 if (!ret_ptr) {
1027 bphy_err(drvr, "Failed to reserve space in commonring\n");
1028 brcmf_commonring_unlock(commonring);
1029 return 0;
1030 }
1031
1032 for (i = 0; i < alloced; i++) {
1033 rx_bufpost = (struct msgbuf_rx_ioctl_resp_or_event *)ret_ptr;
1034 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
1035
1036 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_CTL_PKT_SIZE);
1037
1038 if (skb == NULL) {
1039 bphy_err(drvr, "Failed to alloc SKB\n");
1040 brcmf_commonring_write_cancel(commonring, alloced - i);
1041 break;
1042 }
1043
1044 pktlen = skb->len;
1045 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
1046 msgbuf->rx_pktids, skb, 0,
1047 &physaddr, &pktid)) {
1048 dev_kfree_skb_any(skb);
1049 bphy_err(drvr, "No PKTID available !!\n");
1050 brcmf_commonring_write_cancel(commonring, alloced - i);
1051 break;
1052 }
1053 if (event_buf)
1054 rx_bufpost->msg.msgtype = MSGBUF_TYPE_EVENT_BUF_POST;
1055 else
1056 rx_bufpost->msg.msgtype =
1057 MSGBUF_TYPE_IOCTLRESP_BUF_POST;
1058 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
1059
1060 address = (u64)physaddr;
1061 rx_bufpost->host_buf_len = cpu_to_le16((u16)pktlen);
1062 rx_bufpost->host_buf_addr.high_addr =
1063 cpu_to_le32(address >> 32);
1064 rx_bufpost->host_buf_addr.low_addr =
1065 cpu_to_le32(address & 0xffffffff);
1066
1067 ret_ptr += brcmf_commonring_len_item(commonring);
1068 }
1069
1070 if (i)
1071 brcmf_commonring_write_complete(commonring);
1072
1073 brcmf_commonring_unlock(commonring);
1074
1075 return i;
1076 }
1077
1078
brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf * msgbuf)1079 static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf)
1080 {
1081 u32 count;
1082
1083 count = msgbuf->max_ioctlrespbuf - msgbuf->cur_ioctlrespbuf;
1084 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, false, count);
1085 msgbuf->cur_ioctlrespbuf += count;
1086 }
1087
1088
brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf * msgbuf)1089 static void brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf *msgbuf)
1090 {
1091 u32 count;
1092
1093 count = msgbuf->max_eventbuf - msgbuf->cur_eventbuf;
1094 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, true, count);
1095 msgbuf->cur_eventbuf += count;
1096 }
1097
1098
brcmf_msgbuf_process_event(struct brcmf_msgbuf * msgbuf,void * buf)1099 static void brcmf_msgbuf_process_event(struct brcmf_msgbuf *msgbuf, void *buf)
1100 {
1101 struct brcmf_pub *drvr = msgbuf->drvr;
1102 struct msgbuf_rx_event *event;
1103 u32 idx;
1104 u16 buflen;
1105 struct sk_buff *skb;
1106 struct brcmf_if *ifp;
1107
1108 event = (struct msgbuf_rx_event *)buf;
1109 idx = le32_to_cpu(event->msg.request_id);
1110 buflen = le16_to_cpu(event->event_data_len);
1111
1112 if (msgbuf->cur_eventbuf)
1113 msgbuf->cur_eventbuf--;
1114 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1115
1116 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1117 msgbuf->rx_pktids, idx);
1118 if (!skb)
1119 return;
1120
1121 if (msgbuf->rx_dataoffset)
1122 skb_pull(skb, msgbuf->rx_dataoffset);
1123
1124 skb_trim(skb, buflen);
1125
1126 ifp = brcmf_get_ifp(msgbuf->drvr, event->msg.ifidx);
1127 if (!ifp || !ifp->ndev) {
1128 bphy_err(drvr, "Received pkt for invalid ifidx %d\n",
1129 event->msg.ifidx);
1130 goto exit;
1131 }
1132
1133 skb->protocol = eth_type_trans(skb, ifp->ndev);
1134
1135 brcmf_fweh_process_skb(ifp->drvr, skb, 0, GFP_KERNEL);
1136
1137 exit:
1138 brcmu_pkt_buf_free_skb(skb);
1139 }
1140
1141
1142 static void
brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf * msgbuf,void * buf)1143 brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf *msgbuf, void *buf)
1144 {
1145 struct brcmf_pub *drvr = msgbuf->drvr;
1146 struct msgbuf_rx_complete *rx_complete;
1147 struct sk_buff *skb;
1148 u16 data_offset;
1149 u16 buflen;
1150 u16 flags;
1151 u32 idx;
1152 struct brcmf_if *ifp;
1153
1154 brcmf_msgbuf_update_rxbufpost_count(msgbuf, 1);
1155
1156 rx_complete = (struct msgbuf_rx_complete *)buf;
1157 data_offset = le16_to_cpu(rx_complete->data_offset);
1158 buflen = le16_to_cpu(rx_complete->data_len);
1159 idx = le32_to_cpu(rx_complete->msg.request_id);
1160 flags = le16_to_cpu(rx_complete->flags);
1161
1162 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1163 msgbuf->rx_pktids, idx);
1164 if (!skb)
1165 return;
1166
1167 if (data_offset)
1168 skb_pull(skb, data_offset);
1169 else if (msgbuf->rx_dataoffset)
1170 skb_pull(skb, msgbuf->rx_dataoffset);
1171
1172 skb_trim(skb, buflen);
1173
1174 if ((flags & BRCMF_MSGBUF_PKT_FLAGS_FRAME_MASK) ==
1175 BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_11) {
1176 ifp = msgbuf->drvr->mon_if;
1177
1178 if (!ifp) {
1179 bphy_err(drvr, "Received unexpected monitor pkt\n");
1180 brcmu_pkt_buf_free_skb(skb);
1181 return;
1182 }
1183
1184 brcmf_netif_mon_rx(ifp, skb);
1185 return;
1186 }
1187
1188 ifp = brcmf_get_ifp(msgbuf->drvr, rx_complete->msg.ifidx);
1189 if (!ifp || !ifp->ndev) {
1190 bphy_err(drvr, "Received pkt for invalid ifidx %d\n",
1191 rx_complete->msg.ifidx);
1192 brcmu_pkt_buf_free_skb(skb);
1193 return;
1194 }
1195
1196 skb->protocol = eth_type_trans(skb, ifp->ndev);
1197 brcmf_netif_rx(ifp, skb, false);
1198 }
1199
brcmf_msgbuf_process_gen_status(struct brcmf_msgbuf * msgbuf,void * buf)1200 static void brcmf_msgbuf_process_gen_status(struct brcmf_msgbuf *msgbuf,
1201 void *buf)
1202 {
1203 struct msgbuf_gen_status *gen_status = buf;
1204 struct brcmf_pub *drvr = msgbuf->drvr;
1205 int err;
1206
1207 err = le16_to_cpu(gen_status->compl_hdr.status);
1208 if (err)
1209 bphy_err(drvr, "Firmware reported general error: %d\n", err);
1210 }
1211
brcmf_msgbuf_process_ring_status(struct brcmf_msgbuf * msgbuf,void * buf)1212 static void brcmf_msgbuf_process_ring_status(struct brcmf_msgbuf *msgbuf,
1213 void *buf)
1214 {
1215 struct msgbuf_ring_status *ring_status = buf;
1216 struct brcmf_pub *drvr = msgbuf->drvr;
1217 int err;
1218
1219 err = le16_to_cpu(ring_status->compl_hdr.status);
1220 if (err) {
1221 int ring = le16_to_cpu(ring_status->compl_hdr.flow_ring_id);
1222
1223 bphy_err(drvr, "Firmware reported ring %d error: %d\n", ring,
1224 err);
1225 }
1226 }
1227
1228 static void
brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf * msgbuf,void * buf)1229 brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf *msgbuf,
1230 void *buf)
1231 {
1232 struct brcmf_pub *drvr = msgbuf->drvr;
1233 struct msgbuf_flowring_create_resp *flowring_create_resp;
1234 u16 status;
1235 u16 flowid;
1236
1237 flowring_create_resp = (struct msgbuf_flowring_create_resp *)buf;
1238
1239 flowid = le16_to_cpu(flowring_create_resp->compl_hdr.flow_ring_id);
1240 flowid -= BRCMF_H2D_MSGRING_FLOWRING_IDSTART;
1241 status = le16_to_cpu(flowring_create_resp->compl_hdr.status);
1242
1243 if (status) {
1244 bphy_err(drvr, "Flowring creation failed, code %d\n", status);
1245 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1246 return;
1247 }
1248 brcmf_dbg(MSGBUF, "Flowring %d Create response status %d\n", flowid,
1249 status);
1250
1251 brcmf_flowring_open(msgbuf->flow, flowid);
1252
1253 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
1254 }
1255
1256
1257 static void
brcmf_msgbuf_process_flow_ring_delete_response(struct brcmf_msgbuf * msgbuf,void * buf)1258 brcmf_msgbuf_process_flow_ring_delete_response(struct brcmf_msgbuf *msgbuf,
1259 void *buf)
1260 {
1261 struct brcmf_pub *drvr = msgbuf->drvr;
1262 struct msgbuf_flowring_delete_resp *flowring_delete_resp;
1263 u16 status;
1264 u16 flowid;
1265
1266 flowring_delete_resp = (struct msgbuf_flowring_delete_resp *)buf;
1267
1268 flowid = le16_to_cpu(flowring_delete_resp->compl_hdr.flow_ring_id);
1269 flowid -= BRCMF_H2D_MSGRING_FLOWRING_IDSTART;
1270 status = le16_to_cpu(flowring_delete_resp->compl_hdr.status);
1271
1272 if (status) {
1273 bphy_err(drvr, "Flowring deletion failed, code %d\n", status);
1274 brcmf_flowring_delete(msgbuf->flow, flowid);
1275 return;
1276 }
1277 brcmf_dbg(MSGBUF, "Flowring %d Delete response status %d\n", flowid,
1278 status);
1279
1280 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1281 }
1282
1283
brcmf_msgbuf_process_msgtype(struct brcmf_msgbuf * msgbuf,void * buf)1284 static void brcmf_msgbuf_process_msgtype(struct brcmf_msgbuf *msgbuf, void *buf)
1285 {
1286 struct brcmf_pub *drvr = msgbuf->drvr;
1287 struct msgbuf_common_hdr *msg;
1288
1289 msg = (struct msgbuf_common_hdr *)buf;
1290 switch (msg->msgtype) {
1291 case MSGBUF_TYPE_GEN_STATUS:
1292 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_GEN_STATUS\n");
1293 brcmf_msgbuf_process_gen_status(msgbuf, buf);
1294 break;
1295 case MSGBUF_TYPE_RING_STATUS:
1296 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RING_STATUS\n");
1297 brcmf_msgbuf_process_ring_status(msgbuf, buf);
1298 break;
1299 case MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT:
1300 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT\n");
1301 brcmf_msgbuf_process_flow_ring_create_response(msgbuf, buf);
1302 break;
1303 case MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT:
1304 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT\n");
1305 brcmf_msgbuf_process_flow_ring_delete_response(msgbuf, buf);
1306 break;
1307 case MSGBUF_TYPE_IOCTLPTR_REQ_ACK:
1308 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTLPTR_REQ_ACK\n");
1309 break;
1310 case MSGBUF_TYPE_IOCTL_CMPLT:
1311 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTL_CMPLT\n");
1312 brcmf_msgbuf_process_ioctl_complete(msgbuf, buf);
1313 break;
1314 case MSGBUF_TYPE_WL_EVENT:
1315 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_WL_EVENT\n");
1316 brcmf_msgbuf_process_event(msgbuf, buf);
1317 break;
1318 case MSGBUF_TYPE_TX_STATUS:
1319 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_TX_STATUS\n");
1320 brcmf_msgbuf_process_txstatus(msgbuf, buf);
1321 break;
1322 case MSGBUF_TYPE_RX_CMPLT:
1323 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RX_CMPLT\n");
1324 brcmf_msgbuf_process_rx_complete(msgbuf, buf);
1325 break;
1326 default:
1327 bphy_err(drvr, "Unsupported msgtype %d\n", msg->msgtype);
1328 break;
1329 }
1330 }
1331
1332
brcmf_msgbuf_process_rx(struct brcmf_msgbuf * msgbuf,struct brcmf_commonring * commonring)1333 static void brcmf_msgbuf_process_rx(struct brcmf_msgbuf *msgbuf,
1334 struct brcmf_commonring *commonring)
1335 {
1336 void *buf;
1337 u16 count;
1338 u16 processed;
1339
1340 again:
1341 buf = brcmf_commonring_get_read_ptr(commonring, &count);
1342 if (buf == NULL)
1343 return;
1344
1345 processed = 0;
1346 while (count) {
1347 brcmf_msgbuf_process_msgtype(msgbuf,
1348 buf + msgbuf->rx_dataoffset);
1349 buf += brcmf_commonring_len_item(commonring);
1350 processed++;
1351 if (processed == BRCMF_MSGBUF_UPDATE_RX_PTR_THRS) {
1352 brcmf_commonring_read_complete(commonring, processed);
1353 processed = 0;
1354 }
1355 count--;
1356 }
1357 if (processed)
1358 brcmf_commonring_read_complete(commonring, processed);
1359
1360 if (commonring->r_ptr == 0)
1361 goto again;
1362 }
1363
1364
brcmf_proto_msgbuf_rx_trigger(struct device * dev)1365 int brcmf_proto_msgbuf_rx_trigger(struct device *dev)
1366 {
1367 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
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 void *buf;
1372 u32 flowid;
1373 int qlen;
1374
1375 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1376 brcmf_msgbuf_process_rx(msgbuf, buf);
1377 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1378 brcmf_msgbuf_process_rx(msgbuf, buf);
1379 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1380 brcmf_msgbuf_process_rx(msgbuf, buf);
1381
1382 for_each_set_bit(flowid, msgbuf->txstatus_done_map,
1383 msgbuf->max_flowrings) {
1384 clear_bit(flowid, msgbuf->txstatus_done_map);
1385 commonring = msgbuf->flowrings[flowid];
1386 qlen = brcmf_flowring_qlen(msgbuf->flow, flowid);
1387 if ((qlen > BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) ||
1388 ((qlen) && (atomic_read(&commonring->outstanding_tx) <
1389 BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS)))
1390 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
1391 }
1392
1393 return 0;
1394 }
1395
1396
brcmf_msgbuf_delete_flowring(struct brcmf_pub * drvr,u16 flowid)1397 void brcmf_msgbuf_delete_flowring(struct brcmf_pub *drvr, u16 flowid)
1398 {
1399 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1400 struct msgbuf_tx_flowring_delete_req *delete;
1401 struct brcmf_commonring *commonring;
1402 void *ret_ptr;
1403 u8 ifidx;
1404 int err;
1405
1406 /* no need to submit if firmware can not be reached */
1407 if (drvr->bus_if->state != BRCMF_BUS_UP) {
1408 brcmf_dbg(MSGBUF, "bus down, flowring will be removed\n");
1409 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1410 return;
1411 }
1412
1413 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1414 brcmf_commonring_lock(commonring);
1415 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
1416 if (!ret_ptr) {
1417 bphy_err(drvr, "FW unaware, flowring will be removed !!\n");
1418 brcmf_commonring_unlock(commonring);
1419 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1420 return;
1421 }
1422
1423 delete = (struct msgbuf_tx_flowring_delete_req *)ret_ptr;
1424
1425 ifidx = brcmf_flowring_ifidx_get(msgbuf->flow, flowid);
1426
1427 delete->msg.msgtype = MSGBUF_TYPE_FLOW_RING_DELETE;
1428 delete->msg.ifidx = ifidx;
1429 delete->msg.request_id = 0;
1430
1431 delete->flow_ring_id = cpu_to_le16(flowid +
1432 BRCMF_H2D_MSGRING_FLOWRING_IDSTART);
1433 delete->reason = 0;
1434
1435 brcmf_dbg(MSGBUF, "Send Flow Delete Req flow ID %d, ifindex %d\n",
1436 flowid, ifidx);
1437
1438 err = brcmf_commonring_write_complete(commonring);
1439 brcmf_commonring_unlock(commonring);
1440 if (err) {
1441 bphy_err(drvr, "Failed to submit RING_DELETE, flowring will be removed\n");
1442 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1443 }
1444 }
1445
1446 #ifdef DEBUG
brcmf_msgbuf_stats_read(struct seq_file * seq,void * data)1447 static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1448 {
1449 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
1450 struct brcmf_pub *drvr = bus_if->drvr;
1451 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1452 struct brcmf_commonring *commonring;
1453 u16 i;
1454 struct brcmf_flowring_ring *ring;
1455 struct brcmf_flowring_hash *hash;
1456
1457 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1458 seq_printf(seq, "h2d_ctl_submit: rp %4u, wp %4u, depth %4u\n",
1459 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1460 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
1461 seq_printf(seq, "h2d_rx_submit: rp %4u, wp %4u, depth %4u\n",
1462 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1463 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1464 seq_printf(seq, "d2h_ctl_cmplt: rp %4u, wp %4u, depth %4u\n",
1465 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1466 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1467 seq_printf(seq, "d2h_tx_cmplt: rp %4u, wp %4u, depth %4u\n",
1468 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1469 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1470 seq_printf(seq, "d2h_rx_cmplt: rp %4u, wp %4u, depth %4u\n",
1471 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1472
1473 seq_printf(seq, "\nh2d_flowrings: depth %u\n",
1474 BRCMF_H2D_TXFLOWRING_MAX_ITEM);
1475 seq_puts(seq, "Active flowrings:\n");
1476 for (i = 0; i < msgbuf->flow->nrofrings; i++) {
1477 if (!msgbuf->flow->rings[i])
1478 continue;
1479 ring = msgbuf->flow->rings[i];
1480 if (ring->status != RING_OPEN)
1481 continue;
1482 commonring = msgbuf->flowrings[i];
1483 hash = &msgbuf->flow->hash[ring->hash_id];
1484 seq_printf(seq, "id %3u: rp %4u, wp %4u, qlen %4u, blocked %u\n"
1485 " ifidx %u, fifo %u, da %pM\n",
1486 i, commonring->r_ptr, commonring->w_ptr,
1487 skb_queue_len(&ring->skblist), ring->blocked,
1488 hash->ifidx, hash->fifo, hash->mac);
1489 }
1490
1491 return 0;
1492 }
1493 #else
brcmf_msgbuf_stats_read(struct seq_file * seq,void * data)1494 static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1495 {
1496 return 0;
1497 }
1498 #endif
1499
brcmf_msgbuf_debugfs_create(struct brcmf_pub * drvr)1500 static void brcmf_msgbuf_debugfs_create(struct brcmf_pub *drvr)
1501 {
1502 brcmf_debugfs_add_entry(drvr, "msgbuf_stats", brcmf_msgbuf_stats_read);
1503 }
1504
brcmf_proto_msgbuf_attach(struct brcmf_pub * drvr)1505 int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
1506 {
1507 struct brcmf_bus_msgbuf *if_msgbuf;
1508 struct brcmf_msgbuf *msgbuf;
1509 u64 address;
1510 u32 count;
1511
1512 if_msgbuf = drvr->bus_if->msgbuf;
1513
1514 if (if_msgbuf->max_flowrings >= BRCMF_FLOWRING_HASHSIZE) {
1515 bphy_err(drvr, "driver not configured for this many flowrings %d\n",
1516 if_msgbuf->max_flowrings);
1517 if_msgbuf->max_flowrings = BRCMF_FLOWRING_HASHSIZE - 1;
1518 }
1519
1520 msgbuf = kzalloc(sizeof(*msgbuf), GFP_KERNEL);
1521 if (!msgbuf)
1522 goto fail;
1523
1524 msgbuf->txflow_wq = create_singlethread_workqueue("msgbuf_txflow");
1525 if (msgbuf->txflow_wq == NULL) {
1526 bphy_err(drvr, "workqueue creation failed\n");
1527 goto fail;
1528 }
1529 INIT_WORK(&msgbuf->txflow_work, brcmf_msgbuf_txflow_worker);
1530 count = BITS_TO_LONGS(if_msgbuf->max_flowrings);
1531 count = count * sizeof(unsigned long);
1532 msgbuf->flow_map = kzalloc(count, GFP_KERNEL);
1533 if (!msgbuf->flow_map)
1534 goto fail;
1535
1536 msgbuf->txstatus_done_map = kzalloc(count, GFP_KERNEL);
1537 if (!msgbuf->txstatus_done_map)
1538 goto fail;
1539
1540 msgbuf->drvr = drvr;
1541 msgbuf->ioctbuf = dma_alloc_coherent(drvr->bus_if->dev,
1542 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1543 &msgbuf->ioctbuf_handle,
1544 GFP_KERNEL);
1545 if (!msgbuf->ioctbuf)
1546 goto fail;
1547 address = (u64)msgbuf->ioctbuf_handle;
1548 msgbuf->ioctbuf_phys_hi = address >> 32;
1549 msgbuf->ioctbuf_phys_lo = address & 0xffffffff;
1550
1551 drvr->proto->hdrpull = brcmf_msgbuf_hdrpull;
1552 drvr->proto->query_dcmd = brcmf_msgbuf_query_dcmd;
1553 drvr->proto->set_dcmd = brcmf_msgbuf_set_dcmd;
1554 drvr->proto->tx_queue_data = brcmf_msgbuf_tx_queue_data;
1555 drvr->proto->configure_addr_mode = brcmf_msgbuf_configure_addr_mode;
1556 drvr->proto->delete_peer = brcmf_msgbuf_delete_peer;
1557 drvr->proto->add_tdls_peer = brcmf_msgbuf_add_tdls_peer;
1558 drvr->proto->rxreorder = brcmf_msgbuf_rxreorder;
1559 drvr->proto->debugfs_create = brcmf_msgbuf_debugfs_create;
1560 drvr->proto->pd = msgbuf;
1561
1562 init_waitqueue_head(&msgbuf->ioctl_resp_wait);
1563
1564 msgbuf->commonrings =
1565 (struct brcmf_commonring **)if_msgbuf->commonrings;
1566 msgbuf->flowrings = (struct brcmf_commonring **)if_msgbuf->flowrings;
1567 msgbuf->max_flowrings = if_msgbuf->max_flowrings;
1568 msgbuf->flowring_dma_handle =
1569 kcalloc(msgbuf->max_flowrings,
1570 sizeof(*msgbuf->flowring_dma_handle), GFP_KERNEL);
1571 if (!msgbuf->flowring_dma_handle)
1572 goto fail;
1573
1574 msgbuf->rx_dataoffset = if_msgbuf->rx_dataoffset;
1575 msgbuf->max_rxbufpost = if_msgbuf->max_rxbufpost;
1576
1577 msgbuf->max_ioctlrespbuf = BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST;
1578 msgbuf->max_eventbuf = BRCMF_MSGBUF_MAX_EVENTBUF_POST;
1579
1580 msgbuf->tx_pktids = brcmf_msgbuf_init_pktids(NR_TX_PKTIDS,
1581 DMA_TO_DEVICE);
1582 if (!msgbuf->tx_pktids)
1583 goto fail;
1584 msgbuf->rx_pktids = brcmf_msgbuf_init_pktids(NR_RX_PKTIDS,
1585 DMA_FROM_DEVICE);
1586 if (!msgbuf->rx_pktids)
1587 goto fail;
1588
1589 msgbuf->flow = brcmf_flowring_attach(drvr->bus_if->dev,
1590 if_msgbuf->max_flowrings);
1591 if (!msgbuf->flow)
1592 goto fail;
1593
1594
1595 brcmf_dbg(MSGBUF, "Feeding buffers, rx data %d, rx event %d, rx ioctl resp %d\n",
1596 msgbuf->max_rxbufpost, msgbuf->max_eventbuf,
1597 msgbuf->max_ioctlrespbuf);
1598 count = 0;
1599 do {
1600 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
1601 if (msgbuf->max_rxbufpost != msgbuf->rxbufpost)
1602 msleep(10);
1603 else
1604 break;
1605 count++;
1606 } while (count < 10);
1607 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1608 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
1609
1610 INIT_WORK(&msgbuf->flowring_work, brcmf_msgbuf_flowring_worker);
1611 spin_lock_init(&msgbuf->flowring_work_lock);
1612 INIT_LIST_HEAD(&msgbuf->work_queue);
1613
1614 return 0;
1615
1616 fail:
1617 if (msgbuf) {
1618 kfree(msgbuf->flow_map);
1619 kfree(msgbuf->txstatus_done_map);
1620 brcmf_msgbuf_release_pktids(msgbuf);
1621 kfree(msgbuf->flowring_dma_handle);
1622 if (msgbuf->ioctbuf)
1623 dma_free_coherent(drvr->bus_if->dev,
1624 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1625 msgbuf->ioctbuf,
1626 msgbuf->ioctbuf_handle);
1627 if (msgbuf->txflow_wq)
1628 destroy_workqueue(msgbuf->txflow_wq);
1629 kfree(msgbuf);
1630 }
1631 return -ENOMEM;
1632 }
1633
1634
brcmf_proto_msgbuf_detach(struct brcmf_pub * drvr)1635 void brcmf_proto_msgbuf_detach(struct brcmf_pub *drvr)
1636 {
1637 struct brcmf_msgbuf *msgbuf;
1638 struct brcmf_msgbuf_work_item *work;
1639
1640 brcmf_dbg(TRACE, "Enter\n");
1641 if (drvr->proto->pd) {
1642 msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1643 cancel_work_sync(&msgbuf->flowring_work);
1644 while (!list_empty(&msgbuf->work_queue)) {
1645 work = list_first_entry(&msgbuf->work_queue,
1646 struct brcmf_msgbuf_work_item,
1647 queue);
1648 list_del(&work->queue);
1649 kfree(work);
1650 }
1651 kfree(msgbuf->flow_map);
1652 kfree(msgbuf->txstatus_done_map);
1653 if (msgbuf->txflow_wq)
1654 destroy_workqueue(msgbuf->txflow_wq);
1655
1656 brcmf_flowring_detach(msgbuf->flow);
1657 dma_free_coherent(drvr->bus_if->dev,
1658 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1659 msgbuf->ioctbuf, msgbuf->ioctbuf_handle);
1660 brcmf_msgbuf_release_pktids(msgbuf);
1661 kfree(msgbuf->flowring_dma_handle);
1662 kfree(msgbuf);
1663 drvr->proto->pd = NULL;
1664 }
1665 }
1666