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 return -ENOMEM;
351
352 array[*idx].data_offset = data_offset;
353 array[*idx].physaddr = *physaddr;
354 array[*idx].skb = skb;
355
356 pktids->last_allocated_idx = *idx;
357
358 return 0;
359 }
360
361
362 static struct sk_buff *
brcmf_msgbuf_get_pktid(struct device * dev,struct brcmf_msgbuf_pktids * pktids,u32 idx)363 brcmf_msgbuf_get_pktid(struct device *dev, struct brcmf_msgbuf_pktids *pktids,
364 u32 idx)
365 {
366 struct brcmf_msgbuf_pktid *pktid;
367 struct sk_buff *skb;
368
369 if (idx >= pktids->array_size) {
370 brcmf_err("Invalid packet id %d (max %d)\n", idx,
371 pktids->array_size);
372 return NULL;
373 }
374 if (pktids->array[idx].allocated.counter) {
375 pktid = &pktids->array[idx];
376 dma_unmap_single(dev, pktid->physaddr,
377 pktid->skb->len - pktid->data_offset,
378 pktids->direction);
379 skb = pktid->skb;
380 pktid->allocated.counter = 0;
381 return skb;
382 } else {
383 brcmf_err("Invalid packet id %d (not in use)\n", idx);
384 }
385
386 return NULL;
387 }
388
389
390 static void
brcmf_msgbuf_release_array(struct device * dev,struct brcmf_msgbuf_pktids * pktids)391 brcmf_msgbuf_release_array(struct device *dev,
392 struct brcmf_msgbuf_pktids *pktids)
393 {
394 struct brcmf_msgbuf_pktid *array;
395 struct brcmf_msgbuf_pktid *pktid;
396 u32 count;
397
398 array = pktids->array;
399 count = 0;
400 do {
401 if (array[count].allocated.counter) {
402 pktid = &array[count];
403 dma_unmap_single(dev, pktid->physaddr,
404 pktid->skb->len - pktid->data_offset,
405 pktids->direction);
406 brcmu_pkt_buf_free_skb(pktid->skb);
407 }
408 count++;
409 } while (count < pktids->array_size);
410
411 kfree(array);
412 kfree(pktids);
413 }
414
415
brcmf_msgbuf_release_pktids(struct brcmf_msgbuf * msgbuf)416 static void brcmf_msgbuf_release_pktids(struct brcmf_msgbuf *msgbuf)
417 {
418 if (msgbuf->rx_pktids)
419 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
420 msgbuf->rx_pktids);
421 if (msgbuf->tx_pktids)
422 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
423 msgbuf->tx_pktids);
424 }
425
426
brcmf_msgbuf_tx_ioctl(struct brcmf_pub * drvr,int ifidx,uint cmd,void * buf,uint len)427 static int brcmf_msgbuf_tx_ioctl(struct brcmf_pub *drvr, int ifidx,
428 uint cmd, void *buf, uint len)
429 {
430 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
431 struct brcmf_commonring *commonring;
432 struct msgbuf_ioctl_req_hdr *request;
433 u16 buf_len;
434 void *ret_ptr;
435 int err;
436
437 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
438 brcmf_commonring_lock(commonring);
439 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
440 if (!ret_ptr) {
441 bphy_err(drvr, "Failed to reserve space in commonring\n");
442 brcmf_commonring_unlock(commonring);
443 return -ENOMEM;
444 }
445
446 msgbuf->reqid++;
447
448 request = (struct msgbuf_ioctl_req_hdr *)ret_ptr;
449 request->msg.msgtype = MSGBUF_TYPE_IOCTLPTR_REQ;
450 request->msg.ifidx = (u8)ifidx;
451 request->msg.flags = 0;
452 request->msg.request_id = cpu_to_le32(BRCMF_IOCTL_REQ_PKTID);
453 request->cmd = cpu_to_le32(cmd);
454 request->output_buf_len = cpu_to_le16(len);
455 request->trans_id = cpu_to_le16(msgbuf->reqid);
456
457 buf_len = min_t(u16, len, BRCMF_TX_IOCTL_MAX_MSG_SIZE);
458 request->input_buf_len = cpu_to_le16(buf_len);
459 request->req_buf_addr.high_addr = cpu_to_le32(msgbuf->ioctbuf_phys_hi);
460 request->req_buf_addr.low_addr = cpu_to_le32(msgbuf->ioctbuf_phys_lo);
461 if (buf)
462 memcpy(msgbuf->ioctbuf, buf, buf_len);
463 else
464 memset(msgbuf->ioctbuf, 0, buf_len);
465
466 err = brcmf_commonring_write_complete(commonring);
467 brcmf_commonring_unlock(commonring);
468
469 return err;
470 }
471
472
brcmf_msgbuf_ioctl_resp_wait(struct brcmf_msgbuf * msgbuf)473 static int brcmf_msgbuf_ioctl_resp_wait(struct brcmf_msgbuf *msgbuf)
474 {
475 return wait_event_timeout(msgbuf->ioctl_resp_wait,
476 msgbuf->ctl_completed,
477 MSGBUF_IOCTL_RESP_TIMEOUT);
478 }
479
480
brcmf_msgbuf_ioctl_resp_wake(struct brcmf_msgbuf * msgbuf)481 static void brcmf_msgbuf_ioctl_resp_wake(struct brcmf_msgbuf *msgbuf)
482 {
483 msgbuf->ctl_completed = true;
484 wake_up(&msgbuf->ioctl_resp_wait);
485 }
486
487
brcmf_msgbuf_query_dcmd(struct brcmf_pub * drvr,int ifidx,uint cmd,void * buf,uint len,int * fwerr)488 static int brcmf_msgbuf_query_dcmd(struct brcmf_pub *drvr, int ifidx,
489 uint cmd, void *buf, uint len, int *fwerr)
490 {
491 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
492 struct sk_buff *skb = NULL;
493 int timeout;
494 int err;
495
496 brcmf_dbg(MSGBUF, "ifidx=%d, cmd=%d, len=%d\n", ifidx, cmd, len);
497 *fwerr = 0;
498 msgbuf->ctl_completed = false;
499 err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
500 if (err)
501 return err;
502
503 timeout = brcmf_msgbuf_ioctl_resp_wait(msgbuf);
504 if (!timeout) {
505 bphy_err(drvr, "Timeout on response for query command\n");
506 return -EIO;
507 }
508
509 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
510 msgbuf->rx_pktids,
511 msgbuf->ioctl_resp_pktid);
512 if (msgbuf->ioctl_resp_ret_len != 0) {
513 if (!skb)
514 return -EBADF;
515
516 memcpy(buf, skb->data, (len < msgbuf->ioctl_resp_ret_len) ?
517 len : msgbuf->ioctl_resp_ret_len);
518 }
519 brcmu_pkt_buf_free_skb(skb);
520
521 *fwerr = msgbuf->ioctl_resp_status;
522 return 0;
523 }
524
525
brcmf_msgbuf_set_dcmd(struct brcmf_pub * drvr,int ifidx,uint cmd,void * buf,uint len,int * fwerr)526 static int brcmf_msgbuf_set_dcmd(struct brcmf_pub *drvr, int ifidx,
527 uint cmd, void *buf, uint len, int *fwerr)
528 {
529 return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len, fwerr);
530 }
531
532
brcmf_msgbuf_hdrpull(struct brcmf_pub * drvr,bool do_fws,struct sk_buff * skb,struct brcmf_if ** ifp)533 static int brcmf_msgbuf_hdrpull(struct brcmf_pub *drvr, bool do_fws,
534 struct sk_buff *skb, struct brcmf_if **ifp)
535 {
536 return -ENODEV;
537 }
538
brcmf_msgbuf_rxreorder(struct brcmf_if * ifp,struct sk_buff * skb,bool inirq)539 static void brcmf_msgbuf_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb,
540 bool inirq)
541 {
542 }
543
544 static void
brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf * msgbuf,u16 flowid)545 brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf *msgbuf, u16 flowid)
546 {
547 u32 dma_sz;
548 void *dma_buf;
549
550 brcmf_dbg(MSGBUF, "Removing flowring %d\n", flowid);
551
552 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
553 dma_buf = msgbuf->flowrings[flowid]->buf_addr;
554 dma_free_coherent(msgbuf->drvr->bus_if->dev, dma_sz, dma_buf,
555 msgbuf->flowring_dma_handle[flowid]);
556
557 brcmf_flowring_delete(msgbuf->flow, flowid);
558 }
559
560
561 static struct brcmf_msgbuf_work_item *
brcmf_msgbuf_dequeue_work(struct brcmf_msgbuf * msgbuf)562 brcmf_msgbuf_dequeue_work(struct brcmf_msgbuf *msgbuf)
563 {
564 struct brcmf_msgbuf_work_item *work = NULL;
565 ulong flags;
566
567 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
568 if (!list_empty(&msgbuf->work_queue)) {
569 work = list_first_entry(&msgbuf->work_queue,
570 struct brcmf_msgbuf_work_item, queue);
571 list_del(&work->queue);
572 }
573 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
574
575 return work;
576 }
577
578
579 static u32
brcmf_msgbuf_flowring_create_worker(struct brcmf_msgbuf * msgbuf,struct brcmf_msgbuf_work_item * work)580 brcmf_msgbuf_flowring_create_worker(struct brcmf_msgbuf *msgbuf,
581 struct brcmf_msgbuf_work_item *work)
582 {
583 struct brcmf_pub *drvr = msgbuf->drvr;
584 struct msgbuf_tx_flowring_create_req *create;
585 struct brcmf_commonring *commonring;
586 void *ret_ptr;
587 u32 flowid;
588 void *dma_buf;
589 u32 dma_sz;
590 u64 address;
591 int err;
592
593 flowid = work->flowid;
594 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
595 dma_buf = dma_alloc_coherent(msgbuf->drvr->bus_if->dev, dma_sz,
596 &msgbuf->flowring_dma_handle[flowid],
597 GFP_KERNEL);
598 if (!dma_buf) {
599 bphy_err(drvr, "dma_alloc_coherent failed\n");
600 brcmf_flowring_delete(msgbuf->flow, flowid);
601 return BRCMF_FLOWRING_INVALID_ID;
602 }
603
604 brcmf_commonring_config(msgbuf->flowrings[flowid],
605 BRCMF_H2D_TXFLOWRING_MAX_ITEM,
606 BRCMF_H2D_TXFLOWRING_ITEMSIZE, dma_buf);
607
608 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
609 brcmf_commonring_lock(commonring);
610 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
611 if (!ret_ptr) {
612 bphy_err(drvr, "Failed to reserve space in commonring\n");
613 brcmf_commonring_unlock(commonring);
614 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
615 return BRCMF_FLOWRING_INVALID_ID;
616 }
617
618 create = (struct msgbuf_tx_flowring_create_req *)ret_ptr;
619 create->msg.msgtype = MSGBUF_TYPE_FLOW_RING_CREATE;
620 create->msg.ifidx = work->ifidx;
621 create->msg.request_id = 0;
622 create->tid = brcmf_flowring_tid(msgbuf->flow, flowid);
623 create->flow_ring_id = cpu_to_le16(flowid +
624 BRCMF_H2D_MSGRING_FLOWRING_IDSTART);
625 memcpy(create->sa, work->sa, ETH_ALEN);
626 memcpy(create->da, work->da, ETH_ALEN);
627 address = (u64)msgbuf->flowring_dma_handle[flowid];
628 create->flow_ring_addr.high_addr = cpu_to_le32(address >> 32);
629 create->flow_ring_addr.low_addr = cpu_to_le32(address & 0xffffffff);
630 create->max_items = cpu_to_le16(BRCMF_H2D_TXFLOWRING_MAX_ITEM);
631 create->len_item = cpu_to_le16(BRCMF_H2D_TXFLOWRING_ITEMSIZE);
632
633 brcmf_dbg(MSGBUF, "Send Flow Create Req flow ID %d for peer %pM prio %d ifindex %d\n",
634 flowid, work->da, create->tid, work->ifidx);
635
636 err = brcmf_commonring_write_complete(commonring);
637 brcmf_commonring_unlock(commonring);
638 if (err) {
639 bphy_err(drvr, "Failed to write commonring\n");
640 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
641 return BRCMF_FLOWRING_INVALID_ID;
642 }
643
644 return flowid;
645 }
646
647
brcmf_msgbuf_flowring_worker(struct work_struct * work)648 static void brcmf_msgbuf_flowring_worker(struct work_struct *work)
649 {
650 struct brcmf_msgbuf *msgbuf;
651 struct brcmf_msgbuf_work_item *create;
652
653 msgbuf = container_of(work, struct brcmf_msgbuf, flowring_work);
654
655 while ((create = brcmf_msgbuf_dequeue_work(msgbuf))) {
656 brcmf_msgbuf_flowring_create_worker(msgbuf, create);
657 kfree(create);
658 }
659 }
660
661
brcmf_msgbuf_flowring_create(struct brcmf_msgbuf * msgbuf,int ifidx,struct sk_buff * skb)662 static u32 brcmf_msgbuf_flowring_create(struct brcmf_msgbuf *msgbuf, int ifidx,
663 struct sk_buff *skb)
664 {
665 struct brcmf_msgbuf_work_item *create;
666 struct ethhdr *eh = (struct ethhdr *)(skb->data);
667 u32 flowid;
668 ulong flags;
669
670 create = kzalloc(sizeof(*create), GFP_ATOMIC);
671 if (create == NULL)
672 return BRCMF_FLOWRING_INVALID_ID;
673
674 flowid = brcmf_flowring_create(msgbuf->flow, eh->h_dest,
675 skb->priority, ifidx);
676 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
677 kfree(create);
678 return flowid;
679 }
680
681 create->flowid = flowid;
682 create->ifidx = ifidx;
683 memcpy(create->sa, eh->h_source, ETH_ALEN);
684 memcpy(create->da, eh->h_dest, ETH_ALEN);
685
686 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
687 list_add_tail(&create->queue, &msgbuf->work_queue);
688 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
689 schedule_work(&msgbuf->flowring_work);
690
691 return flowid;
692 }
693
694
brcmf_msgbuf_txflow(struct brcmf_msgbuf * msgbuf,u16 flowid)695 static void brcmf_msgbuf_txflow(struct brcmf_msgbuf *msgbuf, u16 flowid)
696 {
697 struct brcmf_flowring *flow = msgbuf->flow;
698 struct brcmf_pub *drvr = msgbuf->drvr;
699 struct brcmf_commonring *commonring;
700 void *ret_ptr;
701 u32 count;
702 struct sk_buff *skb;
703 dma_addr_t physaddr;
704 u32 pktid;
705 struct msgbuf_tx_msghdr *tx_msghdr;
706 u64 address;
707
708 commonring = msgbuf->flowrings[flowid];
709 if (!brcmf_commonring_write_available(commonring))
710 return;
711
712 brcmf_commonring_lock(commonring);
713
714 count = BRCMF_MSGBUF_TX_FLUSH_CNT2 - BRCMF_MSGBUF_TX_FLUSH_CNT1;
715 while (brcmf_flowring_qlen(flow, flowid)) {
716 skb = brcmf_flowring_dequeue(flow, flowid);
717 if (skb == NULL) {
718 bphy_err(drvr, "No SKB, but qlen %d\n",
719 brcmf_flowring_qlen(flow, flowid));
720 break;
721 }
722 skb_orphan(skb);
723 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
724 msgbuf->tx_pktids, skb, ETH_HLEN,
725 &physaddr, &pktid)) {
726 brcmf_flowring_reinsert(flow, flowid, skb);
727 bphy_err(drvr, "No PKTID available !!\n");
728 break;
729 }
730 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
731 if (!ret_ptr) {
732 brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
733 msgbuf->tx_pktids, pktid);
734 brcmf_flowring_reinsert(flow, flowid, skb);
735 break;
736 }
737 count++;
738
739 tx_msghdr = (struct msgbuf_tx_msghdr *)ret_ptr;
740
741 tx_msghdr->msg.msgtype = MSGBUF_TYPE_TX_POST;
742 tx_msghdr->msg.request_id = cpu_to_le32(pktid + 1);
743 tx_msghdr->msg.ifidx = brcmf_flowring_ifidx_get(flow, flowid);
744 tx_msghdr->flags = BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3;
745 tx_msghdr->flags |= (skb->priority & 0x07) <<
746 BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT;
747 tx_msghdr->seg_cnt = 1;
748 memcpy(tx_msghdr->txhdr, skb->data, ETH_HLEN);
749 tx_msghdr->data_len = cpu_to_le16(skb->len - ETH_HLEN);
750 address = (u64)physaddr;
751 tx_msghdr->data_buf_addr.high_addr = cpu_to_le32(address >> 32);
752 tx_msghdr->data_buf_addr.low_addr =
753 cpu_to_le32(address & 0xffffffff);
754 tx_msghdr->metadata_buf_len = 0;
755 tx_msghdr->metadata_buf_addr.high_addr = 0;
756 tx_msghdr->metadata_buf_addr.low_addr = 0;
757 atomic_inc(&commonring->outstanding_tx);
758 if (count >= BRCMF_MSGBUF_TX_FLUSH_CNT2) {
759 brcmf_commonring_write_complete(commonring);
760 count = 0;
761 }
762 }
763 if (count)
764 brcmf_commonring_write_complete(commonring);
765 brcmf_commonring_unlock(commonring);
766 }
767
768
brcmf_msgbuf_txflow_worker(struct work_struct * worker)769 static void brcmf_msgbuf_txflow_worker(struct work_struct *worker)
770 {
771 struct brcmf_msgbuf *msgbuf;
772 u32 flowid;
773
774 msgbuf = container_of(worker, struct brcmf_msgbuf, txflow_work);
775 for_each_set_bit(flowid, msgbuf->flow_map, msgbuf->max_flowrings) {
776 clear_bit(flowid, msgbuf->flow_map);
777 brcmf_msgbuf_txflow(msgbuf, flowid);
778 }
779 }
780
781
brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf * msgbuf,u32 flowid,bool force)782 static int brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf *msgbuf, u32 flowid,
783 bool force)
784 {
785 struct brcmf_commonring *commonring;
786
787 set_bit(flowid, msgbuf->flow_map);
788 commonring = msgbuf->flowrings[flowid];
789 if ((force) || (atomic_read(&commonring->outstanding_tx) <
790 BRCMF_MSGBUF_DELAY_TXWORKER_THRS))
791 queue_work(msgbuf->txflow_wq, &msgbuf->txflow_work);
792
793 return 0;
794 }
795
796
brcmf_msgbuf_tx_queue_data(struct brcmf_pub * drvr,int ifidx,struct sk_buff * skb)797 static int brcmf_msgbuf_tx_queue_data(struct brcmf_pub *drvr, int ifidx,
798 struct sk_buff *skb)
799 {
800 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
801 struct brcmf_flowring *flow = msgbuf->flow;
802 struct ethhdr *eh = (struct ethhdr *)(skb->data);
803 u32 flowid;
804 u32 queue_count;
805 bool force;
806
807 flowid = brcmf_flowring_lookup(flow, eh->h_dest, skb->priority, ifidx);
808 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
809 flowid = brcmf_msgbuf_flowring_create(msgbuf, ifidx, skb);
810 if (flowid == BRCMF_FLOWRING_INVALID_ID)
811 return -ENOMEM;
812 }
813 queue_count = brcmf_flowring_enqueue(flow, flowid, skb);
814 force = ((queue_count % BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) == 0);
815 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, force);
816
817 return 0;
818 }
819
820
821 static void
brcmf_msgbuf_configure_addr_mode(struct brcmf_pub * drvr,int ifidx,enum proto_addr_mode addr_mode)822 brcmf_msgbuf_configure_addr_mode(struct brcmf_pub *drvr, int ifidx,
823 enum proto_addr_mode addr_mode)
824 {
825 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
826
827 brcmf_flowring_configure_addr_mode(msgbuf->flow, ifidx, addr_mode);
828 }
829
830
831 static void
brcmf_msgbuf_delete_peer(struct brcmf_pub * drvr,int ifidx,u8 peer[ETH_ALEN])832 brcmf_msgbuf_delete_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
833 {
834 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
835
836 brcmf_flowring_delete_peer(msgbuf->flow, ifidx, peer);
837 }
838
839
840 static void
brcmf_msgbuf_add_tdls_peer(struct brcmf_pub * drvr,int ifidx,u8 peer[ETH_ALEN])841 brcmf_msgbuf_add_tdls_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
842 {
843 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
844
845 brcmf_flowring_add_tdls_peer(msgbuf->flow, ifidx, peer);
846 }
847
848
849 static void
brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf * msgbuf,void * buf)850 brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf *msgbuf, void *buf)
851 {
852 struct msgbuf_ioctl_resp_hdr *ioctl_resp;
853
854 ioctl_resp = (struct msgbuf_ioctl_resp_hdr *)buf;
855
856 msgbuf->ioctl_resp_status =
857 (s16)le16_to_cpu(ioctl_resp->compl_hdr.status);
858 msgbuf->ioctl_resp_ret_len = le16_to_cpu(ioctl_resp->resp_len);
859 msgbuf->ioctl_resp_pktid = le32_to_cpu(ioctl_resp->msg.request_id);
860
861 brcmf_msgbuf_ioctl_resp_wake(msgbuf);
862
863 if (msgbuf->cur_ioctlrespbuf)
864 msgbuf->cur_ioctlrespbuf--;
865 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
866 }
867
868
869 static void
brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf * msgbuf,void * buf)870 brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf *msgbuf, void *buf)
871 {
872 struct brcmf_commonring *commonring;
873 struct msgbuf_tx_status *tx_status;
874 u32 idx;
875 struct sk_buff *skb;
876 u16 flowid;
877
878 tx_status = (struct msgbuf_tx_status *)buf;
879 idx = le32_to_cpu(tx_status->msg.request_id) - 1;
880 flowid = le16_to_cpu(tx_status->compl_hdr.flow_ring_id);
881 flowid -= BRCMF_H2D_MSGRING_FLOWRING_IDSTART;
882 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
883 msgbuf->tx_pktids, idx);
884 if (!skb)
885 return;
886
887 set_bit(flowid, msgbuf->txstatus_done_map);
888 commonring = msgbuf->flowrings[flowid];
889 atomic_dec(&commonring->outstanding_tx);
890
891 brcmf_txfinalize(brcmf_get_ifp(msgbuf->drvr, tx_status->msg.ifidx),
892 skb, true);
893 }
894
895
brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf * msgbuf,u32 count)896 static u32 brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf *msgbuf, u32 count)
897 {
898 struct brcmf_pub *drvr = msgbuf->drvr;
899 struct brcmf_commonring *commonring;
900 void *ret_ptr;
901 struct sk_buff *skb;
902 u16 alloced;
903 u32 pktlen;
904 dma_addr_t physaddr;
905 struct msgbuf_rx_bufpost *rx_bufpost;
906 u64 address;
907 u32 pktid;
908 u32 i;
909
910 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
911 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
912 count,
913 &alloced);
914 if (!ret_ptr) {
915 brcmf_dbg(MSGBUF, "Failed to reserve space in commonring\n");
916 return 0;
917 }
918
919 for (i = 0; i < alloced; i++) {
920 rx_bufpost = (struct msgbuf_rx_bufpost *)ret_ptr;
921 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
922
923 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
924
925 if (skb == NULL) {
926 bphy_err(drvr, "Failed to alloc SKB\n");
927 brcmf_commonring_write_cancel(commonring, alloced - i);
928 break;
929 }
930
931 pktlen = skb->len;
932 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
933 msgbuf->rx_pktids, skb, 0,
934 &physaddr, &pktid)) {
935 dev_kfree_skb_any(skb);
936 bphy_err(drvr, "No PKTID available !!\n");
937 brcmf_commonring_write_cancel(commonring, alloced - i);
938 break;
939 }
940
941 if (msgbuf->rx_metadata_offset) {
942 address = (u64)physaddr;
943 rx_bufpost->metadata_buf_len =
944 cpu_to_le16(msgbuf->rx_metadata_offset);
945 rx_bufpost->metadata_buf_addr.high_addr =
946 cpu_to_le32(address >> 32);
947 rx_bufpost->metadata_buf_addr.low_addr =
948 cpu_to_le32(address & 0xffffffff);
949
950 skb_pull(skb, msgbuf->rx_metadata_offset);
951 pktlen = skb->len;
952 physaddr += msgbuf->rx_metadata_offset;
953 }
954 rx_bufpost->msg.msgtype = MSGBUF_TYPE_RXBUF_POST;
955 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
956
957 address = (u64)physaddr;
958 rx_bufpost->data_buf_len = cpu_to_le16((u16)pktlen);
959 rx_bufpost->data_buf_addr.high_addr =
960 cpu_to_le32(address >> 32);
961 rx_bufpost->data_buf_addr.low_addr =
962 cpu_to_le32(address & 0xffffffff);
963
964 ret_ptr += brcmf_commonring_len_item(commonring);
965 }
966
967 if (i)
968 brcmf_commonring_write_complete(commonring);
969
970 return i;
971 }
972
973
974 static void
brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf * msgbuf)975 brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf *msgbuf)
976 {
977 u32 fillbufs;
978 u32 retcount;
979
980 fillbufs = msgbuf->max_rxbufpost - msgbuf->rxbufpost;
981
982 while (fillbufs) {
983 retcount = brcmf_msgbuf_rxbuf_data_post(msgbuf, fillbufs);
984 if (!retcount)
985 break;
986 msgbuf->rxbufpost += retcount;
987 fillbufs -= retcount;
988 }
989 }
990
991
992 static void
brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf * msgbuf,u16 rxcnt)993 brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf *msgbuf, u16 rxcnt)
994 {
995 msgbuf->rxbufpost -= rxcnt;
996 if (msgbuf->rxbufpost <= (msgbuf->max_rxbufpost -
997 BRCMF_MSGBUF_RXBUFPOST_THRESHOLD))
998 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
999 }
1000
1001
1002 static u32
brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf * msgbuf,bool event_buf,u32 count)1003 brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf *msgbuf, bool event_buf,
1004 u32 count)
1005 {
1006 struct brcmf_pub *drvr = msgbuf->drvr;
1007 struct brcmf_commonring *commonring;
1008 void *ret_ptr;
1009 struct sk_buff *skb;
1010 u16 alloced;
1011 u32 pktlen;
1012 dma_addr_t physaddr;
1013 struct msgbuf_rx_ioctl_resp_or_event *rx_bufpost;
1014 u64 address;
1015 u32 pktid;
1016 u32 i;
1017
1018 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1019 brcmf_commonring_lock(commonring);
1020 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
1021 count,
1022 &alloced);
1023 if (!ret_ptr) {
1024 bphy_err(drvr, "Failed to reserve space in commonring\n");
1025 brcmf_commonring_unlock(commonring);
1026 return 0;
1027 }
1028
1029 for (i = 0; i < alloced; i++) {
1030 rx_bufpost = (struct msgbuf_rx_ioctl_resp_or_event *)ret_ptr;
1031 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
1032
1033 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_CTL_PKT_SIZE);
1034
1035 if (skb == NULL) {
1036 bphy_err(drvr, "Failed to alloc SKB\n");
1037 brcmf_commonring_write_cancel(commonring, alloced - i);
1038 break;
1039 }
1040
1041 pktlen = skb->len;
1042 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
1043 msgbuf->rx_pktids, skb, 0,
1044 &physaddr, &pktid)) {
1045 dev_kfree_skb_any(skb);
1046 bphy_err(drvr, "No PKTID available !!\n");
1047 brcmf_commonring_write_cancel(commonring, alloced - i);
1048 break;
1049 }
1050 if (event_buf)
1051 rx_bufpost->msg.msgtype = MSGBUF_TYPE_EVENT_BUF_POST;
1052 else
1053 rx_bufpost->msg.msgtype =
1054 MSGBUF_TYPE_IOCTLRESP_BUF_POST;
1055 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
1056
1057 address = (u64)physaddr;
1058 rx_bufpost->host_buf_len = cpu_to_le16((u16)pktlen);
1059 rx_bufpost->host_buf_addr.high_addr =
1060 cpu_to_le32(address >> 32);
1061 rx_bufpost->host_buf_addr.low_addr =
1062 cpu_to_le32(address & 0xffffffff);
1063
1064 ret_ptr += brcmf_commonring_len_item(commonring);
1065 }
1066
1067 if (i)
1068 brcmf_commonring_write_complete(commonring);
1069
1070 brcmf_commonring_unlock(commonring);
1071
1072 return i;
1073 }
1074
1075
brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf * msgbuf)1076 static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf)
1077 {
1078 u32 count;
1079
1080 count = msgbuf->max_ioctlrespbuf - msgbuf->cur_ioctlrespbuf;
1081 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, false, count);
1082 msgbuf->cur_ioctlrespbuf += count;
1083 }
1084
1085
brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf * msgbuf)1086 static void brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf *msgbuf)
1087 {
1088 u32 count;
1089
1090 count = msgbuf->max_eventbuf - msgbuf->cur_eventbuf;
1091 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, true, count);
1092 msgbuf->cur_eventbuf += count;
1093 }
1094
1095
brcmf_msgbuf_process_event(struct brcmf_msgbuf * msgbuf,void * buf)1096 static void brcmf_msgbuf_process_event(struct brcmf_msgbuf *msgbuf, void *buf)
1097 {
1098 struct brcmf_pub *drvr = msgbuf->drvr;
1099 struct msgbuf_rx_event *event;
1100 u32 idx;
1101 u16 buflen;
1102 struct sk_buff *skb;
1103 struct brcmf_if *ifp;
1104
1105 event = (struct msgbuf_rx_event *)buf;
1106 idx = le32_to_cpu(event->msg.request_id);
1107 buflen = le16_to_cpu(event->event_data_len);
1108
1109 if (msgbuf->cur_eventbuf)
1110 msgbuf->cur_eventbuf--;
1111 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1112
1113 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1114 msgbuf->rx_pktids, idx);
1115 if (!skb)
1116 return;
1117
1118 if (msgbuf->rx_dataoffset)
1119 skb_pull(skb, msgbuf->rx_dataoffset);
1120
1121 skb_trim(skb, buflen);
1122
1123 ifp = brcmf_get_ifp(msgbuf->drvr, event->msg.ifidx);
1124 if (!ifp || !ifp->ndev) {
1125 bphy_err(drvr, "Received pkt for invalid ifidx %d\n",
1126 event->msg.ifidx);
1127 goto exit;
1128 }
1129
1130 skb->protocol = eth_type_trans(skb, ifp->ndev);
1131
1132 brcmf_fweh_process_skb(ifp->drvr, skb, 0, GFP_KERNEL);
1133
1134 exit:
1135 brcmu_pkt_buf_free_skb(skb);
1136 }
1137
1138
1139 static void
brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf * msgbuf,void * buf)1140 brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf *msgbuf, void *buf)
1141 {
1142 struct brcmf_pub *drvr = msgbuf->drvr;
1143 struct msgbuf_rx_complete *rx_complete;
1144 struct sk_buff *skb;
1145 u16 data_offset;
1146 u16 buflen;
1147 u16 flags;
1148 u32 idx;
1149 struct brcmf_if *ifp;
1150
1151 brcmf_msgbuf_update_rxbufpost_count(msgbuf, 1);
1152
1153 rx_complete = (struct msgbuf_rx_complete *)buf;
1154 data_offset = le16_to_cpu(rx_complete->data_offset);
1155 buflen = le16_to_cpu(rx_complete->data_len);
1156 idx = le32_to_cpu(rx_complete->msg.request_id);
1157 flags = le16_to_cpu(rx_complete->flags);
1158
1159 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1160 msgbuf->rx_pktids, idx);
1161 if (!skb)
1162 return;
1163
1164 if (data_offset)
1165 skb_pull(skb, data_offset);
1166 else if (msgbuf->rx_dataoffset)
1167 skb_pull(skb, msgbuf->rx_dataoffset);
1168
1169 skb_trim(skb, buflen);
1170
1171 if ((flags & BRCMF_MSGBUF_PKT_FLAGS_FRAME_MASK) ==
1172 BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_11) {
1173 ifp = msgbuf->drvr->mon_if;
1174
1175 if (!ifp) {
1176 bphy_err(drvr, "Received unexpected monitor pkt\n");
1177 brcmu_pkt_buf_free_skb(skb);
1178 return;
1179 }
1180
1181 brcmf_netif_mon_rx(ifp, skb);
1182 return;
1183 }
1184
1185 ifp = brcmf_get_ifp(msgbuf->drvr, rx_complete->msg.ifidx);
1186 if (!ifp || !ifp->ndev) {
1187 bphy_err(drvr, "Received pkt for invalid ifidx %d\n",
1188 rx_complete->msg.ifidx);
1189 brcmu_pkt_buf_free_skb(skb);
1190 return;
1191 }
1192
1193 skb->protocol = eth_type_trans(skb, ifp->ndev);
1194 brcmf_netif_rx(ifp, skb, false);
1195 }
1196
brcmf_msgbuf_process_gen_status(struct brcmf_msgbuf * msgbuf,void * buf)1197 static void brcmf_msgbuf_process_gen_status(struct brcmf_msgbuf *msgbuf,
1198 void *buf)
1199 {
1200 struct msgbuf_gen_status *gen_status = buf;
1201 struct brcmf_pub *drvr = msgbuf->drvr;
1202 int err;
1203
1204 err = le16_to_cpu(gen_status->compl_hdr.status);
1205 if (err)
1206 bphy_err(drvr, "Firmware reported general error: %d\n", err);
1207 }
1208
brcmf_msgbuf_process_ring_status(struct brcmf_msgbuf * msgbuf,void * buf)1209 static void brcmf_msgbuf_process_ring_status(struct brcmf_msgbuf *msgbuf,
1210 void *buf)
1211 {
1212 struct msgbuf_ring_status *ring_status = buf;
1213 struct brcmf_pub *drvr = msgbuf->drvr;
1214 int err;
1215
1216 err = le16_to_cpu(ring_status->compl_hdr.status);
1217 if (err) {
1218 int ring = le16_to_cpu(ring_status->compl_hdr.flow_ring_id);
1219
1220 bphy_err(drvr, "Firmware reported ring %d error: %d\n", ring,
1221 err);
1222 }
1223 }
1224
1225 static void
brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf * msgbuf,void * buf)1226 brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf *msgbuf,
1227 void *buf)
1228 {
1229 struct brcmf_pub *drvr = msgbuf->drvr;
1230 struct msgbuf_flowring_create_resp *flowring_create_resp;
1231 u16 status;
1232 u16 flowid;
1233
1234 flowring_create_resp = (struct msgbuf_flowring_create_resp *)buf;
1235
1236 flowid = le16_to_cpu(flowring_create_resp->compl_hdr.flow_ring_id);
1237 flowid -= BRCMF_H2D_MSGRING_FLOWRING_IDSTART;
1238 status = le16_to_cpu(flowring_create_resp->compl_hdr.status);
1239
1240 if (status) {
1241 bphy_err(drvr, "Flowring creation failed, code %d\n", status);
1242 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1243 return;
1244 }
1245 brcmf_dbg(MSGBUF, "Flowring %d Create response status %d\n", flowid,
1246 status);
1247
1248 brcmf_flowring_open(msgbuf->flow, flowid);
1249
1250 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
1251 }
1252
1253
1254 static void
brcmf_msgbuf_process_flow_ring_delete_response(struct brcmf_msgbuf * msgbuf,void * buf)1255 brcmf_msgbuf_process_flow_ring_delete_response(struct brcmf_msgbuf *msgbuf,
1256 void *buf)
1257 {
1258 struct brcmf_pub *drvr = msgbuf->drvr;
1259 struct msgbuf_flowring_delete_resp *flowring_delete_resp;
1260 u16 status;
1261 u16 flowid;
1262
1263 flowring_delete_resp = (struct msgbuf_flowring_delete_resp *)buf;
1264
1265 flowid = le16_to_cpu(flowring_delete_resp->compl_hdr.flow_ring_id);
1266 flowid -= BRCMF_H2D_MSGRING_FLOWRING_IDSTART;
1267 status = le16_to_cpu(flowring_delete_resp->compl_hdr.status);
1268
1269 if (status) {
1270 bphy_err(drvr, "Flowring deletion failed, code %d\n", status);
1271 brcmf_flowring_delete(msgbuf->flow, flowid);
1272 return;
1273 }
1274 brcmf_dbg(MSGBUF, "Flowring %d Delete response status %d\n", flowid,
1275 status);
1276
1277 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1278 }
1279
1280
brcmf_msgbuf_process_msgtype(struct brcmf_msgbuf * msgbuf,void * buf)1281 static void brcmf_msgbuf_process_msgtype(struct brcmf_msgbuf *msgbuf, void *buf)
1282 {
1283 struct brcmf_pub *drvr = msgbuf->drvr;
1284 struct msgbuf_common_hdr *msg;
1285
1286 msg = (struct msgbuf_common_hdr *)buf;
1287 switch (msg->msgtype) {
1288 case MSGBUF_TYPE_GEN_STATUS:
1289 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_GEN_STATUS\n");
1290 brcmf_msgbuf_process_gen_status(msgbuf, buf);
1291 break;
1292 case MSGBUF_TYPE_RING_STATUS:
1293 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RING_STATUS\n");
1294 brcmf_msgbuf_process_ring_status(msgbuf, buf);
1295 break;
1296 case MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT:
1297 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT\n");
1298 brcmf_msgbuf_process_flow_ring_create_response(msgbuf, buf);
1299 break;
1300 case MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT:
1301 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT\n");
1302 brcmf_msgbuf_process_flow_ring_delete_response(msgbuf, buf);
1303 break;
1304 case MSGBUF_TYPE_IOCTLPTR_REQ_ACK:
1305 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTLPTR_REQ_ACK\n");
1306 break;
1307 case MSGBUF_TYPE_IOCTL_CMPLT:
1308 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTL_CMPLT\n");
1309 brcmf_msgbuf_process_ioctl_complete(msgbuf, buf);
1310 break;
1311 case MSGBUF_TYPE_WL_EVENT:
1312 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_WL_EVENT\n");
1313 brcmf_msgbuf_process_event(msgbuf, buf);
1314 break;
1315 case MSGBUF_TYPE_TX_STATUS:
1316 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_TX_STATUS\n");
1317 brcmf_msgbuf_process_txstatus(msgbuf, buf);
1318 break;
1319 case MSGBUF_TYPE_RX_CMPLT:
1320 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RX_CMPLT\n");
1321 brcmf_msgbuf_process_rx_complete(msgbuf, buf);
1322 break;
1323 default:
1324 bphy_err(drvr, "Unsupported msgtype %d\n", msg->msgtype);
1325 break;
1326 }
1327 }
1328
1329
brcmf_msgbuf_process_rx(struct brcmf_msgbuf * msgbuf,struct brcmf_commonring * commonring)1330 static void brcmf_msgbuf_process_rx(struct brcmf_msgbuf *msgbuf,
1331 struct brcmf_commonring *commonring)
1332 {
1333 void *buf;
1334 u16 count;
1335 u16 processed;
1336
1337 again:
1338 buf = brcmf_commonring_get_read_ptr(commonring, &count);
1339 if (buf == NULL)
1340 return;
1341
1342 processed = 0;
1343 while (count) {
1344 brcmf_msgbuf_process_msgtype(msgbuf,
1345 buf + msgbuf->rx_dataoffset);
1346 buf += brcmf_commonring_len_item(commonring);
1347 processed++;
1348 if (processed == BRCMF_MSGBUF_UPDATE_RX_PTR_THRS) {
1349 brcmf_commonring_read_complete(commonring, processed);
1350 processed = 0;
1351 }
1352 count--;
1353 }
1354 if (processed)
1355 brcmf_commonring_read_complete(commonring, processed);
1356
1357 if (commonring->r_ptr == 0)
1358 goto again;
1359 }
1360
1361
brcmf_proto_msgbuf_rx_trigger(struct device * dev)1362 int brcmf_proto_msgbuf_rx_trigger(struct device *dev)
1363 {
1364 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1365 struct brcmf_pub *drvr = bus_if->drvr;
1366 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1367 struct brcmf_commonring *commonring;
1368 void *buf;
1369 u32 flowid;
1370 int qlen;
1371
1372 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1373 brcmf_msgbuf_process_rx(msgbuf, buf);
1374 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1375 brcmf_msgbuf_process_rx(msgbuf, buf);
1376 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1377 brcmf_msgbuf_process_rx(msgbuf, buf);
1378
1379 for_each_set_bit(flowid, msgbuf->txstatus_done_map,
1380 msgbuf->max_flowrings) {
1381 clear_bit(flowid, msgbuf->txstatus_done_map);
1382 commonring = msgbuf->flowrings[flowid];
1383 qlen = brcmf_flowring_qlen(msgbuf->flow, flowid);
1384 if ((qlen > BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) ||
1385 ((qlen) && (atomic_read(&commonring->outstanding_tx) <
1386 BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS)))
1387 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
1388 }
1389
1390 return 0;
1391 }
1392
1393
brcmf_msgbuf_delete_flowring(struct brcmf_pub * drvr,u16 flowid)1394 void brcmf_msgbuf_delete_flowring(struct brcmf_pub *drvr, u16 flowid)
1395 {
1396 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1397 struct msgbuf_tx_flowring_delete_req *delete;
1398 struct brcmf_commonring *commonring;
1399 void *ret_ptr;
1400 u8 ifidx;
1401 int err;
1402
1403 /* no need to submit if firmware can not be reached */
1404 if (drvr->bus_if->state != BRCMF_BUS_UP) {
1405 brcmf_dbg(MSGBUF, "bus down, flowring will be removed\n");
1406 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1407 return;
1408 }
1409
1410 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1411 brcmf_commonring_lock(commonring);
1412 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
1413 if (!ret_ptr) {
1414 bphy_err(drvr, "FW unaware, flowring will be removed !!\n");
1415 brcmf_commonring_unlock(commonring);
1416 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1417 return;
1418 }
1419
1420 delete = (struct msgbuf_tx_flowring_delete_req *)ret_ptr;
1421
1422 ifidx = brcmf_flowring_ifidx_get(msgbuf->flow, flowid);
1423
1424 delete->msg.msgtype = MSGBUF_TYPE_FLOW_RING_DELETE;
1425 delete->msg.ifidx = ifidx;
1426 delete->msg.request_id = 0;
1427
1428 delete->flow_ring_id = cpu_to_le16(flowid +
1429 BRCMF_H2D_MSGRING_FLOWRING_IDSTART);
1430 delete->reason = 0;
1431
1432 brcmf_dbg(MSGBUF, "Send Flow Delete Req flow ID %d, ifindex %d\n",
1433 flowid, ifidx);
1434
1435 err = brcmf_commonring_write_complete(commonring);
1436 brcmf_commonring_unlock(commonring);
1437 if (err) {
1438 bphy_err(drvr, "Failed to submit RING_DELETE, flowring will be removed\n");
1439 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1440 }
1441 }
1442
1443 #ifdef DEBUG
brcmf_msgbuf_stats_read(struct seq_file * seq,void * data)1444 static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1445 {
1446 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
1447 struct brcmf_pub *drvr = bus_if->drvr;
1448 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1449 struct brcmf_commonring *commonring;
1450 u16 i;
1451 struct brcmf_flowring_ring *ring;
1452 struct brcmf_flowring_hash *hash;
1453
1454 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1455 seq_printf(seq, "h2d_ctl_submit: rp %4u, wp %4u, depth %4u\n",
1456 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1457 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
1458 seq_printf(seq, "h2d_rx_submit: rp %4u, wp %4u, depth %4u\n",
1459 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1460 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1461 seq_printf(seq, "d2h_ctl_cmplt: rp %4u, wp %4u, depth %4u\n",
1462 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1463 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1464 seq_printf(seq, "d2h_tx_cmplt: rp %4u, wp %4u, depth %4u\n",
1465 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1466 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1467 seq_printf(seq, "d2h_rx_cmplt: rp %4u, wp %4u, depth %4u\n",
1468 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1469
1470 seq_printf(seq, "\nh2d_flowrings: depth %u\n",
1471 BRCMF_H2D_TXFLOWRING_MAX_ITEM);
1472 seq_puts(seq, "Active flowrings:\n");
1473 for (i = 0; i < msgbuf->flow->nrofrings; i++) {
1474 if (!msgbuf->flow->rings[i])
1475 continue;
1476 ring = msgbuf->flow->rings[i];
1477 if (ring->status != RING_OPEN)
1478 continue;
1479 commonring = msgbuf->flowrings[i];
1480 hash = &msgbuf->flow->hash[ring->hash_id];
1481 seq_printf(seq, "id %3u: rp %4u, wp %4u, qlen %4u, blocked %u\n"
1482 " ifidx %u, fifo %u, da %pM\n",
1483 i, commonring->r_ptr, commonring->w_ptr,
1484 skb_queue_len(&ring->skblist), ring->blocked,
1485 hash->ifidx, hash->fifo, hash->mac);
1486 }
1487
1488 return 0;
1489 }
1490 #else
brcmf_msgbuf_stats_read(struct seq_file * seq,void * data)1491 static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1492 {
1493 return 0;
1494 }
1495 #endif
1496
brcmf_msgbuf_debugfs_create(struct brcmf_pub * drvr)1497 static void brcmf_msgbuf_debugfs_create(struct brcmf_pub *drvr)
1498 {
1499 brcmf_debugfs_add_entry(drvr, "msgbuf_stats", brcmf_msgbuf_stats_read);
1500 }
1501
brcmf_proto_msgbuf_attach(struct brcmf_pub * drvr)1502 int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
1503 {
1504 struct brcmf_bus_msgbuf *if_msgbuf;
1505 struct brcmf_msgbuf *msgbuf;
1506 u64 address;
1507 u32 count;
1508
1509 if_msgbuf = drvr->bus_if->msgbuf;
1510
1511 if (if_msgbuf->max_flowrings >= BRCMF_FLOWRING_HASHSIZE) {
1512 bphy_err(drvr, "driver not configured for this many flowrings %d\n",
1513 if_msgbuf->max_flowrings);
1514 if_msgbuf->max_flowrings = BRCMF_FLOWRING_HASHSIZE - 1;
1515 }
1516
1517 msgbuf = kzalloc(sizeof(*msgbuf), GFP_KERNEL);
1518 if (!msgbuf)
1519 goto fail;
1520
1521 msgbuf->txflow_wq = create_singlethread_workqueue("msgbuf_txflow");
1522 if (msgbuf->txflow_wq == NULL) {
1523 bphy_err(drvr, "workqueue creation failed\n");
1524 goto fail;
1525 }
1526 INIT_WORK(&msgbuf->txflow_work, brcmf_msgbuf_txflow_worker);
1527 count = BITS_TO_LONGS(if_msgbuf->max_flowrings);
1528 count = count * sizeof(unsigned long);
1529 msgbuf->flow_map = kzalloc(count, GFP_KERNEL);
1530 if (!msgbuf->flow_map)
1531 goto fail;
1532
1533 msgbuf->txstatus_done_map = kzalloc(count, GFP_KERNEL);
1534 if (!msgbuf->txstatus_done_map)
1535 goto fail;
1536
1537 msgbuf->drvr = drvr;
1538 msgbuf->ioctbuf = dma_alloc_coherent(drvr->bus_if->dev,
1539 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1540 &msgbuf->ioctbuf_handle,
1541 GFP_KERNEL);
1542 if (!msgbuf->ioctbuf)
1543 goto fail;
1544 address = (u64)msgbuf->ioctbuf_handle;
1545 msgbuf->ioctbuf_phys_hi = address >> 32;
1546 msgbuf->ioctbuf_phys_lo = address & 0xffffffff;
1547
1548 drvr->proto->hdrpull = brcmf_msgbuf_hdrpull;
1549 drvr->proto->query_dcmd = brcmf_msgbuf_query_dcmd;
1550 drvr->proto->set_dcmd = brcmf_msgbuf_set_dcmd;
1551 drvr->proto->tx_queue_data = brcmf_msgbuf_tx_queue_data;
1552 drvr->proto->configure_addr_mode = brcmf_msgbuf_configure_addr_mode;
1553 drvr->proto->delete_peer = brcmf_msgbuf_delete_peer;
1554 drvr->proto->add_tdls_peer = brcmf_msgbuf_add_tdls_peer;
1555 drvr->proto->rxreorder = brcmf_msgbuf_rxreorder;
1556 drvr->proto->debugfs_create = brcmf_msgbuf_debugfs_create;
1557 drvr->proto->pd = msgbuf;
1558
1559 init_waitqueue_head(&msgbuf->ioctl_resp_wait);
1560
1561 msgbuf->commonrings =
1562 (struct brcmf_commonring **)if_msgbuf->commonrings;
1563 msgbuf->flowrings = (struct brcmf_commonring **)if_msgbuf->flowrings;
1564 msgbuf->max_flowrings = if_msgbuf->max_flowrings;
1565 msgbuf->flowring_dma_handle =
1566 kcalloc(msgbuf->max_flowrings,
1567 sizeof(*msgbuf->flowring_dma_handle), GFP_KERNEL);
1568 if (!msgbuf->flowring_dma_handle)
1569 goto fail;
1570
1571 msgbuf->rx_dataoffset = if_msgbuf->rx_dataoffset;
1572 msgbuf->max_rxbufpost = if_msgbuf->max_rxbufpost;
1573
1574 msgbuf->max_ioctlrespbuf = BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST;
1575 msgbuf->max_eventbuf = BRCMF_MSGBUF_MAX_EVENTBUF_POST;
1576
1577 msgbuf->tx_pktids = brcmf_msgbuf_init_pktids(NR_TX_PKTIDS,
1578 DMA_TO_DEVICE);
1579 if (!msgbuf->tx_pktids)
1580 goto fail;
1581 msgbuf->rx_pktids = brcmf_msgbuf_init_pktids(NR_RX_PKTIDS,
1582 DMA_FROM_DEVICE);
1583 if (!msgbuf->rx_pktids)
1584 goto fail;
1585
1586 msgbuf->flow = brcmf_flowring_attach(drvr->bus_if->dev,
1587 if_msgbuf->max_flowrings);
1588 if (!msgbuf->flow)
1589 goto fail;
1590
1591
1592 brcmf_dbg(MSGBUF, "Feeding buffers, rx data %d, rx event %d, rx ioctl resp %d\n",
1593 msgbuf->max_rxbufpost, msgbuf->max_eventbuf,
1594 msgbuf->max_ioctlrespbuf);
1595 count = 0;
1596 do {
1597 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
1598 if (msgbuf->max_rxbufpost != msgbuf->rxbufpost)
1599 msleep(10);
1600 else
1601 break;
1602 count++;
1603 } while (count < 10);
1604 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1605 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
1606
1607 INIT_WORK(&msgbuf->flowring_work, brcmf_msgbuf_flowring_worker);
1608 spin_lock_init(&msgbuf->flowring_work_lock);
1609 INIT_LIST_HEAD(&msgbuf->work_queue);
1610
1611 return 0;
1612
1613 fail:
1614 if (msgbuf) {
1615 kfree(msgbuf->flow_map);
1616 kfree(msgbuf->txstatus_done_map);
1617 brcmf_msgbuf_release_pktids(msgbuf);
1618 kfree(msgbuf->flowring_dma_handle);
1619 if (msgbuf->ioctbuf)
1620 dma_free_coherent(drvr->bus_if->dev,
1621 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1622 msgbuf->ioctbuf,
1623 msgbuf->ioctbuf_handle);
1624 if (msgbuf->txflow_wq)
1625 destroy_workqueue(msgbuf->txflow_wq);
1626 kfree(msgbuf);
1627 }
1628 return -ENOMEM;
1629 }
1630
1631
brcmf_proto_msgbuf_detach(struct brcmf_pub * drvr)1632 void brcmf_proto_msgbuf_detach(struct brcmf_pub *drvr)
1633 {
1634 struct brcmf_msgbuf *msgbuf;
1635 struct brcmf_msgbuf_work_item *work;
1636
1637 brcmf_dbg(TRACE, "Enter\n");
1638 if (drvr->proto->pd) {
1639 msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1640 cancel_work_sync(&msgbuf->flowring_work);
1641 while (!list_empty(&msgbuf->work_queue)) {
1642 work = list_first_entry(&msgbuf->work_queue,
1643 struct brcmf_msgbuf_work_item,
1644 queue);
1645 list_del(&work->queue);
1646 kfree(work);
1647 }
1648 kfree(msgbuf->flow_map);
1649 kfree(msgbuf->txstatus_done_map);
1650 if (msgbuf->txflow_wq)
1651 destroy_workqueue(msgbuf->txflow_wq);
1652
1653 brcmf_flowring_detach(msgbuf->flow);
1654 dma_free_coherent(drvr->bus_if->dev,
1655 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1656 msgbuf->ioctbuf, msgbuf->ioctbuf_handle);
1657 brcmf_msgbuf_release_pktids(msgbuf);
1658 kfree(msgbuf->flowring_dma_handle);
1659 kfree(msgbuf);
1660 drvr->proto->pd = NULL;
1661 }
1662 }
1663