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brcmfmac: fix waitqueue_active without memory barrier in brcmfmac driver
[deliverable/linux.git] / drivers / net / wireless / broadcom / brcm80211 / brcmfmac / msgbuf.c
CommitLineData
9a1bb602
HM		 1/* Copyright (c) 2014 Broadcom Corporation
2 *
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
6 *
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
14 */
15
16/*******************************************************************************
17 * Communicates with the dongle by using dcmd codes.
18 * For certain dcmd codes, the dongle interprets string data from the host.
19 ******************************************************************************/
20
21#include <linux/types.h>
22#include <linux/netdevice.h>
23
24#include <brcmu_utils.h>
25#include <brcmu_wifi.h>
26
122d3d04 27#include "core.h"
a8e8ed34 28#include "debug.h"
9a1bb602
HM		 29#include "proto.h"
30#include "msgbuf.h"
31#include "commonring.h"
32#include "flowring.h"
d14f78b9 33#include "bus.h"
9a1bb602
HM		 34#include "tracepoint.h"
35
36
37#define MSGBUF_IOCTL_RESP_TIMEOUT 2000
38
39#define MSGBUF_TYPE_GEN_STATUS 0x1
40#define MSGBUF_TYPE_RING_STATUS 0x2
41#define MSGBUF_TYPE_FLOW_RING_CREATE 0x3
42#define MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT 0x4
43#define MSGBUF_TYPE_FLOW_RING_DELETE 0x5
44#define MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT 0x6
45#define MSGBUF_TYPE_FLOW_RING_FLUSH 0x7
46#define MSGBUF_TYPE_FLOW_RING_FLUSH_CMPLT 0x8
47#define MSGBUF_TYPE_IOCTLPTR_REQ 0x9
48#define MSGBUF_TYPE_IOCTLPTR_REQ_ACK 0xA
49#define MSGBUF_TYPE_IOCTLRESP_BUF_POST 0xB
50#define MSGBUF_TYPE_IOCTL_CMPLT 0xC
51#define MSGBUF_TYPE_EVENT_BUF_POST 0xD
52#define MSGBUF_TYPE_WL_EVENT 0xE
53#define MSGBUF_TYPE_TX_POST 0xF
54#define MSGBUF_TYPE_TX_STATUS 0x10
55#define MSGBUF_TYPE_RXBUF_POST 0x11
56#define MSGBUF_TYPE_RX_CMPLT 0x12
57#define MSGBUF_TYPE_LPBK_DMAXFER 0x13
58#define MSGBUF_TYPE_LPBK_DMAXFER_CMPLT 0x14
59
60#define NR_TX_PKTIDS 2048
61#define NR_RX_PKTIDS 1024
62
63#define BRCMF_IOCTL_REQ_PKTID 0xFFFE
64
65#define BRCMF_MSGBUF_MAX_PKT_SIZE 2048
66#define BRCMF_MSGBUF_RXBUFPOST_THRESHOLD 32
67#define BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST 8
68#define BRCMF_MSGBUF_MAX_EVENTBUF_POST 8
69
70#define BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3 0x01
71#define BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT 5
72
73#define BRCMF_MSGBUF_TX_FLUSH_CNT1 32
74#define BRCMF_MSGBUF_TX_FLUSH_CNT2 96
75
464a5f3f 76#define BRCMF_MSGBUF_DELAY_TXWORKER_THRS 96
5ef1e604 77#define BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS 32
df738c2f
HM		 78#define BRCMF_MSGBUF_UPDATE_RX_PTR_THRS 48
79
9a1bb602
HM		 80
81struct msgbuf_common_hdr {
82 u8 msgtype;
83 u8 ifidx;
84 u8 flags;
85 u8 rsvd0;
86 __le32 request_id;
87};
88
89struct msgbuf_buf_addr {
90 __le32 low_addr;
91 __le32 high_addr;
92};
93
94struct msgbuf_ioctl_req_hdr {
95 struct msgbuf_common_hdr msg;
96 __le32 cmd;
97 __le16 trans_id;
98 __le16 input_buf_len;
99 __le16 output_buf_len;
100 __le16 rsvd0[3];
101 struct msgbuf_buf_addr req_buf_addr;
102 __le32 rsvd1[2];
103};
104
105struct msgbuf_tx_msghdr {
106 struct msgbuf_common_hdr msg;
107 u8 txhdr[ETH_HLEN];
108 u8 flags;
109 u8 seg_cnt;
110 struct msgbuf_buf_addr metadata_buf_addr;
111 struct msgbuf_buf_addr data_buf_addr;
112 __le16 metadata_buf_len;
113 __le16 data_len;
114 __le32 rsvd0;
115};
116
117struct msgbuf_rx_bufpost {
118 struct msgbuf_common_hdr msg;
119 __le16 metadata_buf_len;
120 __le16 data_buf_len;
121 __le32 rsvd0;
122 struct msgbuf_buf_addr metadata_buf_addr;
123 struct msgbuf_buf_addr data_buf_addr;
124};
125
126struct msgbuf_rx_ioctl_resp_or_event {
127 struct msgbuf_common_hdr msg;
128 __le16 host_buf_len;
129 __le16 rsvd0[3];
130 struct msgbuf_buf_addr host_buf_addr;
131 __le32 rsvd1[4];
132};
133
134struct msgbuf_completion_hdr {
135 __le16 status;
136 __le16 flow_ring_id;
137};
138
139struct msgbuf_rx_event {
140 struct msgbuf_common_hdr msg;
141 struct msgbuf_completion_hdr compl_hdr;
142 __le16 event_data_len;
143 __le16 seqnum;
144 __le16 rsvd0[4];
145};
146
147struct msgbuf_ioctl_resp_hdr {
148 struct msgbuf_common_hdr msg;
149 struct msgbuf_completion_hdr compl_hdr;
150 __le16 resp_len;
151 __le16 trans_id;
152 __le32 cmd;
153 __le32 rsvd0;
154};
155
156struct msgbuf_tx_status {
157 struct msgbuf_common_hdr msg;
158 struct msgbuf_completion_hdr compl_hdr;
159 __le16 metadata_len;
160 __le16 tx_status;
161};
162
163struct msgbuf_rx_complete {
164 struct msgbuf_common_hdr msg;
165 struct msgbuf_completion_hdr compl_hdr;
166 __le16 metadata_len;
167 __le16 data_len;
168 __le16 data_offset;
169 __le16 flags;
170 __le32 rx_status_0;
171 __le32 rx_status_1;
172 __le32 rsvd0;
173};
174
175struct msgbuf_tx_flowring_create_req {
176 struct msgbuf_common_hdr msg;
177 u8 da[ETH_ALEN];
178 u8 sa[ETH_ALEN];
179 u8 tid;
180 u8 if_flags;
181 __le16 flow_ring_id;
182 u8 tc;
183 u8 priority;
184 __le16 int_vector;
185 __le16 max_items;
186 __le16 len_item;
187 struct msgbuf_buf_addr flow_ring_addr;
188};
189
190struct msgbuf_tx_flowring_delete_req {
191 struct msgbuf_common_hdr msg;
192 __le16 flow_ring_id;
193 __le16 reason;
194 __le32 rsvd0[7];
195};
196
197struct msgbuf_flowring_create_resp {
198 struct msgbuf_common_hdr msg;
199 struct msgbuf_completion_hdr compl_hdr;
200 __le32 rsvd0[3];
201};
202
203struct msgbuf_flowring_delete_resp {
204 struct msgbuf_common_hdr msg;
205 struct msgbuf_completion_hdr compl_hdr;
206 __le32 rsvd0[3];
207};
208
209struct msgbuf_flowring_flush_resp {
210 struct msgbuf_common_hdr msg;
211 struct msgbuf_completion_hdr compl_hdr;
212 __le32 rsvd0[3];
213};
214
3ba06610
HM		 215struct brcmf_msgbuf_work_item {
216 struct list_head queue;
217 u32 flowid;
218 int ifidx;
219 u8 sa[ETH_ALEN];
220 u8 da[ETH_ALEN];
221};
222
9a1bb602
HM		 223struct brcmf_msgbuf {
224 struct brcmf_pub *drvr;
225
226 struct brcmf_commonring **commonrings;
227 struct brcmf_commonring **flowrings;
228 dma_addr_t *flowring_dma_handle;
229 u16 nrof_flowrings;
230
231 u16 rx_dataoffset;
232 u32 max_rxbufpost;
233 u16 rx_metadata_offset;
234 u32 rxbufpost;
235
236 u32 max_ioctlrespbuf;
237 u32 cur_ioctlrespbuf;
238 u32 max_eventbuf;
239 u32 cur_eventbuf;
240
241 void *ioctbuf;
242 dma_addr_t ioctbuf_handle;
243 u32 ioctbuf_phys_hi;
244 u32 ioctbuf_phys_lo;
ff0a6230 245 int ioctl_resp_status;
9a1bb602
HM		 246 u32 ioctl_resp_ret_len;
247 u32 ioctl_resp_pktid;
248
249 u16 data_seq_no;
250 u16 ioctl_seq_no;
251 u32 reqid;
252 wait_queue_head_t ioctl_resp_wait;
253 bool ctl_completed;
254
255 struct brcmf_msgbuf_pktids *tx_pktids;
256 struct brcmf_msgbuf_pktids *rx_pktids;
257 struct brcmf_flowring *flow;
258
259 struct workqueue_struct *txflow_wq;
260 struct work_struct txflow_work;
261 unsigned long *flow_map;
262 unsigned long *txstatus_done_map;
3ba06610
HM		 263
264 struct work_struct flowring_work;
265 spinlock_t flowring_work_lock;
266 struct list_head work_queue;
9a1bb602
HM		 267};
268
269struct brcmf_msgbuf_pktid {
270 atomic_t allocated;
271 u16 data_offset;
272 struct sk_buff *skb;
273 dma_addr_t physaddr;
274};
275
276struct brcmf_msgbuf_pktids {
277 u32 array_size;
278 u32 last_allocated_idx;
279 enum dma_data_direction direction;
280 struct brcmf_msgbuf_pktid *array;
281};
282
9a1bb602
HM		 283static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf);
284
285
286static struct brcmf_msgbuf_pktids *
287brcmf_msgbuf_init_pktids(u32 nr_array_entries,
288 enum dma_data_direction direction)
289{
290 struct brcmf_msgbuf_pktid *array;
291 struct brcmf_msgbuf_pktids *pktids;
292
3ba06610 293 array = kcalloc(nr_array_entries, sizeof(*array), GFP_KERNEL);
9a1bb602
HM		 294 if (!array)
295 return NULL;
296
3ba06610 297 pktids = kzalloc(sizeof(*pktids), GFP_KERNEL);
9a1bb602
HM		 298 if (!pktids) {
299 kfree(array);
300 return NULL;
301 }
302 pktids->array = array;
303 pktids->array_size = nr_array_entries;
304
305 return pktids;
306}
307
308
309static int
310brcmf_msgbuf_alloc_pktid(struct device *dev,
311 struct brcmf_msgbuf_pktids *pktids,
312 struct sk_buff *skb, u16 data_offset,
313 dma_addr_t *physaddr, u32 *idx)
314{
315 struct brcmf_msgbuf_pktid *array;
316 u32 count;
317
318 array = pktids->array;
319
320 *physaddr = dma_map_single(dev, skb->data + data_offset,
321 skb->len - data_offset, pktids->direction);
322
323 if (dma_mapping_error(dev, *physaddr)) {
324 brcmf_err("dma_map_single failed !!\n");
325 return -ENOMEM;
326 }
327
328 *idx = pktids->last_allocated_idx;
329
330 count = 0;
331 do {
332 (*idx)++;
333 if (*idx == pktids->array_size)
334 *idx = 0;
335 if (array[*idx].allocated.counter == 0)
336 if (atomic_cmpxchg(&array[*idx].allocated, 0, 1) == 0)
337 break;
338 count++;
339 } while (count < pktids->array_size);
340
341 if (count == pktids->array_size)
342 return -ENOMEM;
343
344 array[*idx].data_offset = data_offset;
345 array[*idx].physaddr = *physaddr;
346 array[*idx].skb = skb;
347
348 pktids->last_allocated_idx = *idx;
349
350 return 0;
351}
352
353
354static struct sk_buff *
355brcmf_msgbuf_get_pktid(struct device *dev, struct brcmf_msgbuf_pktids *pktids,
356 u32 idx)
357{
358 struct brcmf_msgbuf_pktid *pktid;
359 struct sk_buff *skb;
360
361 if (idx >= pktids->array_size) {
362 brcmf_err("Invalid packet id %d (max %d)\n", idx,
363 pktids->array_size);
364 return NULL;
365 }
366 if (pktids->array[idx].allocated.counter) {
367 pktid = &pktids->array[idx];
368 dma_unmap_single(dev, pktid->physaddr,
369 pktid->skb->len - pktid->data_offset,
370 pktids->direction);
371 skb = pktid->skb;
372 pktid->allocated.counter = 0;
373 return skb;
374 } else {
375 brcmf_err("Invalid packet id %d (not in use)\n", idx);
376 }
377
378 return NULL;
379}
380
381
382static void
383brcmf_msgbuf_release_array(struct device *dev,
384 struct brcmf_msgbuf_pktids *pktids)
385{
386 struct brcmf_msgbuf_pktid *array;
387 struct brcmf_msgbuf_pktid *pktid;
388 u32 count;
389
390 array = pktids->array;
391 count = 0;
392 do {
393 if (array[count].allocated.counter) {
394 pktid = &array[count];
395 dma_unmap_single(dev, pktid->physaddr,
396 pktid->skb->len - pktid->data_offset,
397 pktids->direction);
398 brcmu_pkt_buf_free_skb(pktid->skb);
399 }
400 count++;
401 } while (count < pktids->array_size);
402
403 kfree(array);
404 kfree(pktids);
405}
406
407
408static void brcmf_msgbuf_release_pktids(struct brcmf_msgbuf *msgbuf)
409{
410 if (msgbuf->rx_pktids)
411 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
412 msgbuf->rx_pktids);
413 if (msgbuf->tx_pktids)
414 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
415 msgbuf->tx_pktids);
416}
417
418
419static int brcmf_msgbuf_tx_ioctl(struct brcmf_pub *drvr, int ifidx,
420 uint cmd, void *buf, uint len)
421{
422 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
423 struct brcmf_commonring *commonring;
424 struct msgbuf_ioctl_req_hdr *request;
425 u16 buf_len;
426 void *ret_ptr;
427 int err;
428
429 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
430 brcmf_commonring_lock(commonring);
431 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
432 if (!ret_ptr) {
433 brcmf_err("Failed to reserve space in commonring\n");
434 brcmf_commonring_unlock(commonring);
435 return -ENOMEM;
436 }
437
438 msgbuf->reqid++;
439
440 request = (struct msgbuf_ioctl_req_hdr *)ret_ptr;
441 request->msg.msgtype = MSGBUF_TYPE_IOCTLPTR_REQ;
442 request->msg.ifidx = (u8)ifidx;
443 request->msg.flags = 0;
444 request->msg.request_id = cpu_to_le32(BRCMF_IOCTL_REQ_PKTID);
445 request->cmd = cpu_to_le32(cmd);
446 request->output_buf_len = cpu_to_le16(len);
447 request->trans_id = cpu_to_le16(msgbuf->reqid);
448
449 buf_len = min_t(u16, len, BRCMF_TX_IOCTL_MAX_MSG_SIZE);
450 request->input_buf_len = cpu_to_le16(buf_len);
451 request->req_buf_addr.high_addr = cpu_to_le32(msgbuf->ioctbuf_phys_hi);
452 request->req_buf_addr.low_addr = cpu_to_le32(msgbuf->ioctbuf_phys_lo);
453 if (buf)
454 memcpy(msgbuf->ioctbuf, buf, buf_len);
455 else
456 memset(msgbuf->ioctbuf, 0, buf_len);
9a1bb602
HM		 457
458 err = brcmf_commonring_write_complete(commonring);
459 brcmf_commonring_unlock(commonring);
460
461 return err;
462}
463
464
465static int brcmf_msgbuf_ioctl_resp_wait(struct brcmf_msgbuf *msgbuf)
466{
467 return wait_event_timeout(msgbuf->ioctl_resp_wait,
468 msgbuf->ctl_completed,
469 msecs_to_jiffies(MSGBUF_IOCTL_RESP_TIMEOUT));
470}
471
472
473static void brcmf_msgbuf_ioctl_resp_wake(struct brcmf_msgbuf *msgbuf)
474{
d375bc8a 475 msgbuf->ctl_completed = true;
a7decc44 476 wake_up(&msgbuf->ioctl_resp_wait);
9a1bb602
HM		 477}
478
479
480static int brcmf_msgbuf_query_dcmd(struct brcmf_pub *drvr, int ifidx,
481 uint cmd, void *buf, uint len)
482{
483 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
484 struct sk_buff *skb = NULL;
485 int timeout;
486 int err;
487
488 brcmf_dbg(MSGBUF, "ifidx=%d, cmd=%d, len=%d\n", ifidx, cmd, len);
489 msgbuf->ctl_completed = false;
490 err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
491 if (err)
492 return err;
493
494 timeout = brcmf_msgbuf_ioctl_resp_wait(msgbuf);
495 if (!timeout) {
496 brcmf_err("Timeout on response for query command\n");
497 return -EIO;
498 }
499
500 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
501 msgbuf->rx_pktids,
502 msgbuf->ioctl_resp_pktid);
503 if (msgbuf->ioctl_resp_ret_len != 0) {
7d072b40 504 if (!skb)
9a1bb602 505 return -EBADF;
7d072b40 506
9a1bb602
HM		 507 memcpy(buf, skb->data, (len < msgbuf->ioctl_resp_ret_len) ?
508 len : msgbuf->ioctl_resp_ret_len);
509 }
ac96ce83 510 brcmu_pkt_buf_free_skb(skb);
9a1bb602
HM		 511
512 return msgbuf->ioctl_resp_status;
513}
514
515
516static int brcmf_msgbuf_set_dcmd(struct brcmf_pub *drvr, int ifidx,
517 uint cmd, void *buf, uint len)
518{
519 return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len);
520}
521
522
523static int brcmf_msgbuf_hdrpull(struct brcmf_pub *drvr, bool do_fws,
796cfb65 524 struct sk_buff *skb, struct brcmf_if **ifp)
9a1bb602
HM		 525{
526 return -ENODEV;
527}
528
529
530static void
531brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf *msgbuf, u16 flowid)
532{
533 u32 dma_sz;
534 void *dma_buf;
535
536 brcmf_dbg(MSGBUF, "Removing flowring %d\n", flowid);
537
538 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
539 dma_buf = msgbuf->flowrings[flowid]->buf_addr;
540 dma_free_coherent(msgbuf->drvr->bus_if->dev, dma_sz, dma_buf,
541 msgbuf->flowring_dma_handle[flowid]);
542
543 brcmf_flowring_delete(msgbuf->flow, flowid);
544}
545
546
3ba06610
HM		 547static struct brcmf_msgbuf_work_item *
548brcmf_msgbuf_dequeue_work(struct brcmf_msgbuf *msgbuf)
549{
550 struct brcmf_msgbuf_work_item *work = NULL;
551 ulong flags;
552
553 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
554 if (!list_empty(&msgbuf->work_queue)) {
555 work = list_first_entry(&msgbuf->work_queue,
556 struct brcmf_msgbuf_work_item, queue);
557 list_del(&work->queue);
558 }
559 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
560
561 return work;
562}
563
564
565static u32
566brcmf_msgbuf_flowring_create_worker(struct brcmf_msgbuf *msgbuf,
567 struct brcmf_msgbuf_work_item *work)
9a1bb602
HM		 568{
569 struct msgbuf_tx_flowring_create_req *create;
9a1bb602
HM		 570 struct brcmf_commonring *commonring;
571 void *ret_ptr;
572 u32 flowid;
573 void *dma_buf;
574 u32 dma_sz;
83297aaa 575 u64 address;
9a1bb602
HM		 576 int err;
577
3ba06610 578 flowid = work->flowid;
9a1bb602 579 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
9a1bb602
HM		 580 dma_buf = dma_alloc_coherent(msgbuf->drvr->bus_if->dev, dma_sz,
581 &msgbuf->flowring_dma_handle[flowid],
3ba06610 582 GFP_KERNEL);
9a1bb602
HM		 583 if (!dma_buf) {
584 brcmf_err("dma_alloc_coherent failed\n");
585 brcmf_flowring_delete(msgbuf->flow, flowid);
586 return BRCMF_FLOWRING_INVALID_ID;
587 }
588
589 brcmf_commonring_config(msgbuf->flowrings[flowid],
590 BRCMF_H2D_TXFLOWRING_MAX_ITEM,
591 BRCMF_H2D_TXFLOWRING_ITEMSIZE, dma_buf);
592
593 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
594 brcmf_commonring_lock(commonring);
595 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
596 if (!ret_ptr) {
597 brcmf_err("Failed to reserve space in commonring\n");
598 brcmf_commonring_unlock(commonring);
599 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
600 return BRCMF_FLOWRING_INVALID_ID;
601 }
602
603 create = (struct msgbuf_tx_flowring_create_req *)ret_ptr;
604 create->msg.msgtype = MSGBUF_TYPE_FLOW_RING_CREATE;
3ba06610 605 create->msg.ifidx = work->ifidx;
9a1bb602
HM		 606 create->msg.request_id = 0;
607 create->tid = brcmf_flowring_tid(msgbuf->flow, flowid);
608 create->flow_ring_id = cpu_to_le16(flowid +
609 BRCMF_NROF_H2D_COMMON_MSGRINGS);
3ba06610
HM		 610 memcpy(create->sa, work->sa, ETH_ALEN);
611 memcpy(create->da, work->da, ETH_ALEN);
83297aaa 612 address = (u64)msgbuf->flowring_dma_handle[flowid];
9a1bb602
HM		 613 create->flow_ring_addr.high_addr = cpu_to_le32(address >> 32);
614 create->flow_ring_addr.low_addr = cpu_to_le32(address & 0xffffffff);
615 create->max_items = cpu_to_le16(BRCMF_H2D_TXFLOWRING_MAX_ITEM);
616 create->len_item = cpu_to_le16(BRCMF_H2D_TXFLOWRING_ITEMSIZE);
617
618 brcmf_dbg(MSGBUF, "Send Flow Create Req flow ID %d for peer %pM prio %d ifindex %d\n",
3ba06610 619 flowid, work->da, create->tid, work->ifidx);
9a1bb602
HM		 620
621 err = brcmf_commonring_write_complete(commonring);
622 brcmf_commonring_unlock(commonring);
623 if (err) {
624 brcmf_err("Failed to write commonring\n");
625 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
626 return BRCMF_FLOWRING_INVALID_ID;
627 }
628
629 return flowid;
630}
631
632
3ba06610
HM		 633static void brcmf_msgbuf_flowring_worker(struct work_struct *work)
634{
635 struct brcmf_msgbuf *msgbuf;
636 struct brcmf_msgbuf_work_item *create;
637
638 msgbuf = container_of(work, struct brcmf_msgbuf, flowring_work);
639
640 while ((create = brcmf_msgbuf_dequeue_work(msgbuf))) {
641 brcmf_msgbuf_flowring_create_worker(msgbuf, create);
642 kfree(create);
643 }
644}
645
646
647static u32 brcmf_msgbuf_flowring_create(struct brcmf_msgbuf *msgbuf, int ifidx,
648 struct sk_buff *skb)
649{
650 struct brcmf_msgbuf_work_item *create;
651 struct ethhdr *eh = (struct ethhdr *)(skb->data);
652 u32 flowid;
653 ulong flags;
654
655 create = kzalloc(sizeof(*create), GFP_ATOMIC);
656 if (create == NULL)
657 return BRCMF_FLOWRING_INVALID_ID;
658
659 flowid = brcmf_flowring_create(msgbuf->flow, eh->h_dest,
660 skb->priority, ifidx);
661 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
662 kfree(create);
663 return flowid;
664 }
665
666 create->flowid = flowid;
667 create->ifidx = ifidx;
668 memcpy(create->sa, eh->h_source, ETH_ALEN);
669 memcpy(create->da, eh->h_dest, ETH_ALEN);
670
671 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
672 list_add_tail(&create->queue, &msgbuf->work_queue);
673 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
674 schedule_work(&msgbuf->flowring_work);
675
676 return flowid;
677}
678
679
9a1bb602
HM		 680static void brcmf_msgbuf_txflow(struct brcmf_msgbuf *msgbuf, u8 flowid)
681{
682 struct brcmf_flowring *flow = msgbuf->flow;
683 struct brcmf_commonring *commonring;
684 void *ret_ptr;
685 u32 count;
686 struct sk_buff *skb;
687 dma_addr_t physaddr;
688 u32 pktid;
689 struct msgbuf_tx_msghdr *tx_msghdr;
83297aaa 690 u64 address;
9a1bb602
HM		 691
692 commonring = msgbuf->flowrings[flowid];
693 if (!brcmf_commonring_write_available(commonring))
694 return;
695
696 brcmf_commonring_lock(commonring);
697
698 count = BRCMF_MSGBUF_TX_FLUSH_CNT2 - BRCMF_MSGBUF_TX_FLUSH_CNT1;
699 while (brcmf_flowring_qlen(flow, flowid)) {
700 skb = brcmf_flowring_dequeue(flow, flowid);
701 if (skb == NULL) {
702 brcmf_err("No SKB, but qlen %d\n",
703 brcmf_flowring_qlen(flow, flowid));
704 break;
705 }
706 skb_orphan(skb);
707 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
708 msgbuf->tx_pktids, skb, ETH_HLEN,
709 &physaddr, &pktid)) {
710 brcmf_flowring_reinsert(flow, flowid, skb);
711 brcmf_err("No PKTID available !!\n");
712 break;
713 }
714 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
715 if (!ret_ptr) {
716 brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
717 msgbuf->tx_pktids, pktid);
718 brcmf_flowring_reinsert(flow, flowid, skb);
719 break;
720 }
721 count++;
722
723 tx_msghdr = (struct msgbuf_tx_msghdr *)ret_ptr;
724
725 tx_msghdr->msg.msgtype = MSGBUF_TYPE_TX_POST;
726 tx_msghdr->msg.request_id = cpu_to_le32(pktid);
727 tx_msghdr->msg.ifidx = brcmf_flowring_ifidx_get(flow, flowid);
728 tx_msghdr->flags = BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3;
729 tx_msghdr->flags |= (skb->priority & 0x07) <<
730 BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT;
731 tx_msghdr->seg_cnt = 1;
732 memcpy(tx_msghdr->txhdr, skb->data, ETH_HLEN);
733 tx_msghdr->data_len = cpu_to_le16(skb->len - ETH_HLEN);
83297aaa 734 address = (u64)physaddr;
9a1bb602
HM		 735 tx_msghdr->data_buf_addr.high_addr = cpu_to_le32(address >> 32);
736 tx_msghdr->data_buf_addr.low_addr =
737 cpu_to_le32(address & 0xffffffff);
738 tx_msghdr->metadata_buf_len = 0;
739 tx_msghdr->metadata_buf_addr.high_addr = 0;
740 tx_msghdr->metadata_buf_addr.low_addr = 0;
5ef1e604 741 atomic_inc(&commonring->outstanding_tx);
9a1bb602
HM		 742 if (count >= BRCMF_MSGBUF_TX_FLUSH_CNT2) {
743 brcmf_commonring_write_complete(commonring);
744 count = 0;
745 }
746 }
747 if (count)
748 brcmf_commonring_write_complete(commonring);
749 brcmf_commonring_unlock(commonring);
750}
751
752
753static void brcmf_msgbuf_txflow_worker(struct work_struct *worker)
754{
755 struct brcmf_msgbuf *msgbuf;
756 u32 flowid;
757
758 msgbuf = container_of(worker, struct brcmf_msgbuf, txflow_work);
759 for_each_set_bit(flowid, msgbuf->flow_map, msgbuf->nrof_flowrings) {
760 clear_bit(flowid, msgbuf->flow_map);
761 brcmf_msgbuf_txflow(msgbuf, flowid);
762 }
763}
764
765
5ef1e604
HM		 766static int brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf *msgbuf, u32 flowid,
767 bool force)
9a1bb602 768{
5ef1e604
HM		 769 struct brcmf_commonring *commonring;
770
9a1bb602 771 set_bit(flowid, msgbuf->flow_map);
5ef1e604
HM		 772 commonring = msgbuf->flowrings[flowid];
773 if ((force) || (atomic_read(&commonring->outstanding_tx) <
774 BRCMF_MSGBUF_DELAY_TXWORKER_THRS))
775 queue_work(msgbuf->txflow_wq, &msgbuf->txflow_work);
9a1bb602
HM		 776
777 return 0;
778}
779
780
781static int brcmf_msgbuf_txdata(struct brcmf_pub *drvr, int ifidx,
782 u8 offset, struct sk_buff *skb)
783{
784 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
785 struct brcmf_flowring *flow = msgbuf->flow;
786 struct ethhdr *eh = (struct ethhdr *)(skb->data);
787 u32 flowid;
464a5f3f
HM		 788 u32 queue_count;
789 bool force;
9a1bb602
HM		 790
791 flowid = brcmf_flowring_lookup(flow, eh->h_dest, skb->priority, ifidx);
792 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
793 flowid = brcmf_msgbuf_flowring_create(msgbuf, ifidx, skb);
794 if (flowid == BRCMF_FLOWRING_INVALID_ID)
795 return -ENOMEM;
796 }
464a5f3f
HM		 797 queue_count = brcmf_flowring_enqueue(flow, flowid, skb);
798 force = ((queue_count % BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) == 0);
799 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, force);
9a1bb602
HM		 800
801 return 0;
802}
803
804
805static void
806brcmf_msgbuf_configure_addr_mode(struct brcmf_pub *drvr, int ifidx,
807 enum proto_addr_mode addr_mode)
808{
809 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
810
811 brcmf_flowring_configure_addr_mode(msgbuf->flow, ifidx, addr_mode);
812}
813
814
815static void
816brcmf_msgbuf_delete_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
817{
818 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
819
820 brcmf_flowring_delete_peer(msgbuf->flow, ifidx, peer);
821}
822
823
70b7d94b
HM		 824static void
825brcmf_msgbuf_add_tdls_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
826{
827 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
828
829 brcmf_flowring_add_tdls_peer(msgbuf->flow, ifidx, peer);
830}
831
832
9a1bb602
HM		 833static void
834brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf *msgbuf, void *buf)
835{
836 struct msgbuf_ioctl_resp_hdr *ioctl_resp;
837
838 ioctl_resp = (struct msgbuf_ioctl_resp_hdr *)buf;
839
ff0a6230
HM		 840 msgbuf->ioctl_resp_status =
841 (s16)le16_to_cpu(ioctl_resp->compl_hdr.status);
9a1bb602
HM		 842 msgbuf->ioctl_resp_ret_len = le16_to_cpu(ioctl_resp->resp_len);
843 msgbuf->ioctl_resp_pktid = le32_to_cpu(ioctl_resp->msg.request_id);
844
845 brcmf_msgbuf_ioctl_resp_wake(msgbuf);
846
847 if (msgbuf->cur_ioctlrespbuf)
848 msgbuf->cur_ioctlrespbuf--;
849 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
850}
851
852
853static void
854brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf *msgbuf, void *buf)
855{
5ef1e604 856 struct brcmf_commonring *commonring;
9a1bb602
HM		 857 struct msgbuf_tx_status *tx_status;
858 u32 idx;
859 struct sk_buff *skb;
860 u16 flowid;
861
862 tx_status = (struct msgbuf_tx_status *)buf;
863 idx = le32_to_cpu(tx_status->msg.request_id);
864 flowid = le16_to_cpu(tx_status->compl_hdr.flow_ring_id);
865 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
866 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
867 msgbuf->tx_pktids, idx);
7d072b40 868 if (!skb)
9a1bb602 869 return;
9a1bb602
HM		 870
871 set_bit(flowid, msgbuf->txstatus_done_map);
5ef1e604
HM		 872 commonring = msgbuf->flowrings[flowid];
873 atomic_dec(&commonring->outstanding_tx);
9a1bb602 874
054e68ad
AS		 875 brcmf_txfinalize(brcmf_get_ifp(msgbuf->drvr, tx_status->msg.ifidx),
876 skb, true);
9a1bb602
HM		 877}
878
879
880static u32 brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf *msgbuf, u32 count)
881{
882 struct brcmf_commonring *commonring;
883 void *ret_ptr;
884 struct sk_buff *skb;
885 u16 alloced;
886 u32 pktlen;
887 dma_addr_t physaddr;
888 struct msgbuf_rx_bufpost *rx_bufpost;
83297aaa 889 u64 address;
9a1bb602
HM		 890 u32 pktid;
891 u32 i;
892
893 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
894 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
895 count,
896 &alloced);
897 if (!ret_ptr) {
d2e2472c 898 brcmf_dbg(MSGBUF, "Failed to reserve space in commonring\n");
9a1bb602
HM		 899 return 0;
900 }
901
902 for (i = 0; i < alloced; i++) {
903 rx_bufpost = (struct msgbuf_rx_bufpost *)ret_ptr;
904 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
905
906 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
907
908 if (skb == NULL) {
909 brcmf_err("Failed to alloc SKB\n");
910 brcmf_commonring_write_cancel(commonring, alloced - i);
911 break;
912 }
913
914 pktlen = skb->len;
915 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
916 msgbuf->rx_pktids, skb, 0,
917 &physaddr, &pktid)) {
918 dev_kfree_skb_any(skb);
919 brcmf_err("No PKTID available !!\n");
920 brcmf_commonring_write_cancel(commonring, alloced - i);
921 break;
922 }
923
924 if (msgbuf->rx_metadata_offset) {
83297aaa 925 address = (u64)physaddr;
9a1bb602
HM		 926 rx_bufpost->metadata_buf_len =
927 cpu_to_le16(msgbuf->rx_metadata_offset);
928 rx_bufpost->metadata_buf_addr.high_addr =
929 cpu_to_le32(address >> 32);
930 rx_bufpost->metadata_buf_addr.low_addr =
931 cpu_to_le32(address & 0xffffffff);
932
933 skb_pull(skb, msgbuf->rx_metadata_offset);
934 pktlen = skb->len;
935 physaddr += msgbuf->rx_metadata_offset;
936 }
937 rx_bufpost->msg.msgtype = MSGBUF_TYPE_RXBUF_POST;
938 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
939
83297aaa 940 address = (u64)physaddr;
9a1bb602
HM		 941 rx_bufpost->data_buf_len = cpu_to_le16((u16)pktlen);
942 rx_bufpost->data_buf_addr.high_addr =
943 cpu_to_le32(address >> 32);
944 rx_bufpost->data_buf_addr.low_addr =
945 cpu_to_le32(address & 0xffffffff);
946
947 ret_ptr += brcmf_commonring_len_item(commonring);
948 }
949
950 if (i)
951 brcmf_commonring_write_complete(commonring);
952
953 return i;
954}
955
956
957static void
958brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf *msgbuf)
959{
960 u32 fillbufs;
961 u32 retcount;
962
963 fillbufs = msgbuf->max_rxbufpost - msgbuf->rxbufpost;
964
965 while (fillbufs) {
966 retcount = brcmf_msgbuf_rxbuf_data_post(msgbuf, fillbufs);
967 if (!retcount)
968 break;
969 msgbuf->rxbufpost += retcount;
970 fillbufs -= retcount;
971 }
972}
973
974
975static void
976brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf *msgbuf, u16 rxcnt)
977{
978 msgbuf->rxbufpost -= rxcnt;
979 if (msgbuf->rxbufpost <= (msgbuf->max_rxbufpost -
980 BRCMF_MSGBUF_RXBUFPOST_THRESHOLD))
981 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
982}
983
984
985static u32
986brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf *msgbuf, bool event_buf,
987 u32 count)
988{
989 struct brcmf_commonring *commonring;
990 void *ret_ptr;
991 struct sk_buff *skb;
992 u16 alloced;
993 u32 pktlen;
994 dma_addr_t physaddr;
995 struct msgbuf_rx_ioctl_resp_or_event *rx_bufpost;
83297aaa 996 u64 address;
9a1bb602
HM		 997 u32 pktid;
998 u32 i;
999
1000 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1001 brcmf_commonring_lock(commonring);
1002 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
1003 count,
1004 &alloced);
1005 if (!ret_ptr) {
1006 brcmf_err("Failed to reserve space in commonring\n");
1007 brcmf_commonring_unlock(commonring);
1008 return 0;
1009 }
1010
1011 for (i = 0; i < alloced; i++) {
1012 rx_bufpost = (struct msgbuf_rx_ioctl_resp_or_event *)ret_ptr;
1013 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
1014
1015 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
1016
1017 if (skb == NULL) {
1018 brcmf_err("Failed to alloc SKB\n");
1019 brcmf_commonring_write_cancel(commonring, alloced - i);
1020 break;
1021 }
1022
1023 pktlen = skb->len;
1024 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
1025 msgbuf->rx_pktids, skb, 0,
1026 &physaddr, &pktid)) {
1027 dev_kfree_skb_any(skb);
1028 brcmf_err("No PKTID available !!\n");
1029 brcmf_commonring_write_cancel(commonring, alloced - i);
1030 break;
1031 }
1032 if (event_buf)
1033 rx_bufpost->msg.msgtype = MSGBUF_TYPE_EVENT_BUF_POST;
1034 else
1035 rx_bufpost->msg.msgtype =
1036 MSGBUF_TYPE_IOCTLRESP_BUF_POST;
1037 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
1038
83297aaa 1039 address = (u64)physaddr;
9a1bb602
HM		 1040 rx_bufpost->host_buf_len = cpu_to_le16((u16)pktlen);
1041 rx_bufpost->host_buf_addr.high_addr =
1042 cpu_to_le32(address >> 32);
1043 rx_bufpost->host_buf_addr.low_addr =
1044 cpu_to_le32(address & 0xffffffff);
1045
1046 ret_ptr += brcmf_commonring_len_item(commonring);
1047 }
1048
1049 if (i)
1050 brcmf_commonring_write_complete(commonring);
1051
1052 brcmf_commonring_unlock(commonring);
1053
1054 return i;
1055}
1056
1057
1058static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf)
1059{
1060 u32 count;
1061
1062 count = msgbuf->max_ioctlrespbuf - msgbuf->cur_ioctlrespbuf;
1063 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, false, count);
1064 msgbuf->cur_ioctlrespbuf += count;
1065}
1066
1067
1068static void brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf *msgbuf)
1069{
1070 u32 count;
1071
1072 count = msgbuf->max_eventbuf - msgbuf->cur_eventbuf;
1073 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, true, count);
1074 msgbuf->cur_eventbuf += count;
1075}
1076
1077
1078static void
1079brcmf_msgbuf_rx_skb(struct brcmf_msgbuf *msgbuf, struct sk_buff *skb,
1080 u8 ifidx)
1081{
1082 struct brcmf_if *ifp;
1083
75effb03 1084 ifp = brcmf_get_ifp(msgbuf->drvr, ifidx);
796cfb65 1085 if (!ifp || !ifp->ndev) {
94a61208 1086 brcmf_err("Received pkt for invalid ifidx %d\n", ifidx);
9a1bb602
HM		 1087 brcmu_pkt_buf_free_skb(skb);
1088 return;
1089 }
1090 brcmf_netif_rx(ifp, skb);
1091}
1092
1093
1094static void brcmf_msgbuf_process_event(struct brcmf_msgbuf *msgbuf, void *buf)
1095{
1096 struct msgbuf_rx_event *event;
1097 u32 idx;
1098 u16 buflen;
1099 struct sk_buff *skb;
1100
1101 event = (struct msgbuf_rx_event *)buf;
1102 idx = le32_to_cpu(event->msg.request_id);
1103 buflen = le16_to_cpu(event->event_data_len);
1104
1105 if (msgbuf->cur_eventbuf)
1106 msgbuf->cur_eventbuf--;
1107 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1108
1109 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1110 msgbuf->rx_pktids, idx);
1111 if (!skb)
1112 return;
1113
1114 if (msgbuf->rx_dataoffset)
1115 skb_pull(skb, msgbuf->rx_dataoffset);
1116
1117 skb_trim(skb, buflen);
1118
1119 brcmf_msgbuf_rx_skb(msgbuf, skb, event->msg.ifidx);
1120}
1121
1122
1123static void
1124brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf *msgbuf, void *buf)
1125{
1126 struct msgbuf_rx_complete *rx_complete;
1127 struct sk_buff *skb;
1128 u16 data_offset;
1129 u16 buflen;
1130 u32 idx;
1131
1132 brcmf_msgbuf_update_rxbufpost_count(msgbuf, 1);
1133
1134 rx_complete = (struct msgbuf_rx_complete *)buf;
1135 data_offset = le16_to_cpu(rx_complete->data_offset);
1136 buflen = le16_to_cpu(rx_complete->data_len);
1137 idx = le32_to_cpu(rx_complete->msg.request_id);
1138
1139 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1140 msgbuf->rx_pktids, idx);
7d072b40
AS		 1141 if (!skb)
1142 return;
9a1bb602
HM		 1143
1144 if (data_offset)
1145 skb_pull(skb, data_offset);
1146 else if (msgbuf->rx_dataoffset)
1147 skb_pull(skb, msgbuf->rx_dataoffset);
1148
1149 skb_trim(skb, buflen);
1150
1151 brcmf_msgbuf_rx_skb(msgbuf, skb, rx_complete->msg.ifidx);
1152}
1153
1154
1155static void
1156brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf *msgbuf,
1157 void *buf)
1158{
1159 struct msgbuf_flowring_create_resp *flowring_create_resp;
1160 u16 status;
1161 u16 flowid;
1162
1163 flowring_create_resp = (struct msgbuf_flowring_create_resp *)buf;
1164
1165 flowid = le16_to_cpu(flowring_create_resp->compl_hdr.flow_ring_id);
1166 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
1167 status = le16_to_cpu(flowring_create_resp->compl_hdr.status);
1168
1169 if (status) {
1170 brcmf_err("Flowring creation failed, code %d\n", status);
1171 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1172 return;
1173 }
1174 brcmf_dbg(MSGBUF, "Flowring %d Create response status %d\n", flowid,
1175 status);
1176
1177 brcmf_flowring_open(msgbuf->flow, flowid);
1178
5ef1e604 1179 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
9a1bb602
HM		 1180}
1181
1182
1183static void
1184brcmf_msgbuf_process_flow_ring_delete_response(struct brcmf_msgbuf *msgbuf,
1185 void *buf)
1186{
1187 struct msgbuf_flowring_delete_resp *flowring_delete_resp;
1188 u16 status;
1189 u16 flowid;
1190
1191 flowring_delete_resp = (struct msgbuf_flowring_delete_resp *)buf;
1192
1193 flowid = le16_to_cpu(flowring_delete_resp->compl_hdr.flow_ring_id);
1194 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
1195 status = le16_to_cpu(flowring_delete_resp->compl_hdr.status);
1196
1197 if (status) {
1198 brcmf_err("Flowring deletion failed, code %d\n", status);
1199 brcmf_flowring_delete(msgbuf->flow, flowid);
1200 return;
1201 }
1202 brcmf_dbg(MSGBUF, "Flowring %d Delete response status %d\n", flowid,
1203 status);
1204
1205 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1206}
1207
1208
1209static void brcmf_msgbuf_process_msgtype(struct brcmf_msgbuf *msgbuf, void *buf)
1210{
1211 struct msgbuf_common_hdr *msg;
1212
1213 msg = (struct msgbuf_common_hdr *)buf;
1214 switch (msg->msgtype) {
1215 case MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT:
1216 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT\n");
1217 brcmf_msgbuf_process_flow_ring_create_response(msgbuf, buf);
1218 break;
1219 case MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT:
1220 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT\n");
1221 brcmf_msgbuf_process_flow_ring_delete_response(msgbuf, buf);
1222 break;
1223 case MSGBUF_TYPE_IOCTLPTR_REQ_ACK:
1224 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTLPTR_REQ_ACK\n");
1225 break;
1226 case MSGBUF_TYPE_IOCTL_CMPLT:
1227 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTL_CMPLT\n");
1228 brcmf_msgbuf_process_ioctl_complete(msgbuf, buf);
1229 break;
1230 case MSGBUF_TYPE_WL_EVENT:
1231 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_WL_EVENT\n");
1232 brcmf_msgbuf_process_event(msgbuf, buf);
1233 break;
1234 case MSGBUF_TYPE_TX_STATUS:
1235 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_TX_STATUS\n");
1236 brcmf_msgbuf_process_txstatus(msgbuf, buf);
1237 break;
1238 case MSGBUF_TYPE_RX_CMPLT:
1239 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RX_CMPLT\n");
1240 brcmf_msgbuf_process_rx_complete(msgbuf, buf);
1241 break;
1242 default:
1243 brcmf_err("Unsupported msgtype %d\n", msg->msgtype);
1244 break;
1245 }
1246}
1247
1248
1249static void brcmf_msgbuf_process_rx(struct brcmf_msgbuf *msgbuf,
1250 struct brcmf_commonring *commonring)
1251{
1252 void *buf;
1253 u16 count;
df738c2f 1254 u16 processed;
9a1bb602
HM		 1255
1256again:
1257 buf = brcmf_commonring_get_read_ptr(commonring, &count);
1258 if (buf == NULL)
1259 return;
1260
df738c2f 1261 processed = 0;
9a1bb602
HM		 1262 while (count) {
1263 brcmf_msgbuf_process_msgtype(msgbuf,
1264 buf + msgbuf->rx_dataoffset);
1265 buf += brcmf_commonring_len_item(commonring);
df738c2f
HM		 1266 processed++;
1267 if (processed == BRCMF_MSGBUF_UPDATE_RX_PTR_THRS) {
1268 brcmf_commonring_read_complete(commonring, processed);
1269 processed = 0;
1270 }
9a1bb602
HM		 1271 count--;
1272 }
df738c2f
HM		 1273 if (processed)
1274 brcmf_commonring_read_complete(commonring, processed);
9a1bb602
HM		 1275
1276 if (commonring->r_ptr == 0)
1277 goto again;
1278}
1279
1280
1281int brcmf_proto_msgbuf_rx_trigger(struct device *dev)
1282{
1283 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1284 struct brcmf_pub *drvr = bus_if->drvr;
1285 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
5ef1e604 1286 struct brcmf_commonring *commonring;
9a1bb602
HM		 1287 void *buf;
1288 u32 flowid;
5ef1e604 1289 int qlen;
9a1bb602
HM		 1290
1291 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1292 brcmf_msgbuf_process_rx(msgbuf, buf);
1293 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1294 brcmf_msgbuf_process_rx(msgbuf, buf);
1295 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1296 brcmf_msgbuf_process_rx(msgbuf, buf);
1297
1298 for_each_set_bit(flowid, msgbuf->txstatus_done_map,
1299 msgbuf->nrof_flowrings) {
1300 clear_bit(flowid, msgbuf->txstatus_done_map);
5ef1e604
HM		 1301 commonring = msgbuf->flowrings[flowid];
1302 qlen = brcmf_flowring_qlen(msgbuf->flow, flowid);
1303 if ((qlen > BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) ||
1304 ((qlen) && (atomic_read(&commonring->outstanding_tx) <
1305 BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS)))
1306 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
9a1bb602
HM		 1307 }
1308
1309 return 0;
1310}
1311
1312
1313void brcmf_msgbuf_delete_flowring(struct brcmf_pub *drvr, u8 flowid)
1314{
1315 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1316 struct msgbuf_tx_flowring_delete_req *delete;
1317 struct brcmf_commonring *commonring;
1318 void *ret_ptr;
1319 u8 ifidx;
1320 int err;
1321
1322 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1323 brcmf_commonring_lock(commonring);
1324 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
1325 if (!ret_ptr) {
1326 brcmf_err("FW unaware, flowring will be removed !!\n");
1327 brcmf_commonring_unlock(commonring);
1328 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1329 return;
1330 }
1331
1332 delete = (struct msgbuf_tx_flowring_delete_req *)ret_ptr;
1333
1334 ifidx = brcmf_flowring_ifidx_get(msgbuf->flow, flowid);
1335
1336 delete->msg.msgtype = MSGBUF_TYPE_FLOW_RING_DELETE;
1337 delete->msg.ifidx = ifidx;
1338 delete->msg.request_id = 0;
1339
1340 delete->flow_ring_id = cpu_to_le16(flowid +
1341 BRCMF_NROF_H2D_COMMON_MSGRINGS);
1342 delete->reason = 0;
1343
1344 brcmf_dbg(MSGBUF, "Send Flow Delete Req flow ID %d, ifindex %d\n",
1345 flowid, ifidx);
1346
1347 err = brcmf_commonring_write_complete(commonring);
1348 brcmf_commonring_unlock(commonring);
1349 if (err) {
1350 brcmf_err("Failed to submit RING_DELETE, flowring will be removed\n");
1351 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1352 }
1353}
1354
2bb66a81
FL		 1355#ifdef DEBUG
1356static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1357{
1358 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
1359 struct brcmf_pub *drvr = bus_if->drvr;
1360 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1361 struct brcmf_commonring *commonring;
1362 u16 i;
1363 struct brcmf_flowring_ring *ring;
1364 struct brcmf_flowring_hash *hash;
1365
1366 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1367 seq_printf(seq, "h2d_ctl_submit: rp %4u, wp %4u, depth %4u\n",
1368 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1369 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
1370 seq_printf(seq, "h2d_rx_submit: rp %4u, wp %4u, depth %4u\n",
1371 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1372 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1373 seq_printf(seq, "d2h_ctl_cmplt: rp %4u, wp %4u, depth %4u\n",
1374 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1375 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1376 seq_printf(seq, "d2h_tx_cmplt: rp %4u, wp %4u, depth %4u\n",
1377 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1378 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1379 seq_printf(seq, "d2h_rx_cmplt: rp %4u, wp %4u, depth %4u\n",
1380 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1381
1382 seq_printf(seq, "\nh2d_flowrings: depth %u\n",
1383 BRCMF_H2D_TXFLOWRING_MAX_ITEM);
1384 seq_puts(seq, "Active flowrings:\n");
1385 hash = msgbuf->flow->hash;
1386 for (i = 0; i < msgbuf->flow->nrofrings; i++) {
1387 if (!msgbuf->flow->rings[i])
1388 continue;
1389 ring = msgbuf->flow->rings[i];
1390 if (ring->status != RING_OPEN)
1391 continue;
1392 commonring = msgbuf->flowrings[i];
1393 hash = &msgbuf->flow->hash[ring->hash_id];
1394 seq_printf(seq, "id %3u: rp %4u, wp %4u, qlen %4u, blocked %u\n"
1395 " ifidx %u, fifo %u, da %pM\n",
1396 i, commonring->r_ptr, commonring->w_ptr,
1397 skb_queue_len(&ring->skblist), ring->blocked,
1398 hash->ifidx, hash->fifo, hash->mac);
1399 }
1400
1401 return 0;
1402}
1403#else
1404static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1405{
1406 return 0;
1407}
1408#endif
9a1bb602
HM		 1409
1410int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
1411{
1412 struct brcmf_bus_msgbuf *if_msgbuf;
1413 struct brcmf_msgbuf *msgbuf;
83297aaa 1414 u64 address;
9a1bb602
HM		 1415 u32 count;
1416
1417 if_msgbuf = drvr->bus_if->msgbuf;
3ba06610 1418 msgbuf = kzalloc(sizeof(*msgbuf), GFP_KERNEL);
9a1bb602
HM		 1419 if (!msgbuf)
1420 goto fail;
1421
1422 msgbuf->txflow_wq = create_singlethread_workqueue("msgbuf_txflow");
1423 if (msgbuf->txflow_wq == NULL) {
1424 brcmf_err("workqueue creation failed\n");
1425 goto fail;
1426 }
1427 INIT_WORK(&msgbuf->txflow_work, brcmf_msgbuf_txflow_worker);
1428 count = BITS_TO_LONGS(if_msgbuf->nrof_flowrings);
333c2aa0 1429 count = count * sizeof(unsigned long);
3ba06610 1430 msgbuf->flow_map = kzalloc(count, GFP_KERNEL);
9a1bb602
HM		 1431 if (!msgbuf->flow_map)
1432 goto fail;
1433
3ba06610 1434 msgbuf->txstatus_done_map = kzalloc(count, GFP_KERNEL);
9a1bb602
HM		 1435 if (!msgbuf->txstatus_done_map)
1436 goto fail;
1437
1438 msgbuf->drvr = drvr;
1439 msgbuf->ioctbuf = dma_alloc_coherent(drvr->bus_if->dev,
1440 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1441 &msgbuf->ioctbuf_handle,
3ba06610 1442 GFP_KERNEL);
9a1bb602
HM		 1443 if (!msgbuf->ioctbuf)
1444 goto fail;
83297aaa 1445 address = (u64)msgbuf->ioctbuf_handle;
9a1bb602
HM		 1446 msgbuf->ioctbuf_phys_hi = address >> 32;
1447 msgbuf->ioctbuf_phys_lo = address & 0xffffffff;
1448
1449 drvr->proto->hdrpull = brcmf_msgbuf_hdrpull;
1450 drvr->proto->query_dcmd = brcmf_msgbuf_query_dcmd;
1451 drvr->proto->set_dcmd = brcmf_msgbuf_set_dcmd;
1452 drvr->proto->txdata = brcmf_msgbuf_txdata;
1453 drvr->proto->configure_addr_mode = brcmf_msgbuf_configure_addr_mode;
1454 drvr->proto->delete_peer = brcmf_msgbuf_delete_peer;
70b7d94b 1455 drvr->proto->add_tdls_peer = brcmf_msgbuf_add_tdls_peer;
9a1bb602
HM		 1456 drvr->proto->pd = msgbuf;
1457
1458 init_waitqueue_head(&msgbuf->ioctl_resp_wait);
1459
1460 msgbuf->commonrings =
1461 (struct brcmf_commonring **)if_msgbuf->commonrings;
1462 msgbuf->flowrings = (struct brcmf_commonring **)if_msgbuf->flowrings;
1463 msgbuf->nrof_flowrings = if_msgbuf->nrof_flowrings;
1464 msgbuf->flowring_dma_handle = kzalloc(msgbuf->nrof_flowrings *
3ba06610 1465 sizeof(*msgbuf->flowring_dma_handle), GFP_KERNEL);
2d116b88
AS		 1466 if (!msgbuf->flowring_dma_handle)
1467 goto fail;
9a1bb602
HM		 1468
1469 msgbuf->rx_dataoffset = if_msgbuf->rx_dataoffset;
1470 msgbuf->max_rxbufpost = if_msgbuf->max_rxbufpost;
1471
1472 msgbuf->max_ioctlrespbuf = BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST;
1473 msgbuf->max_eventbuf = BRCMF_MSGBUF_MAX_EVENTBUF_POST;
1474
1475 msgbuf->tx_pktids = brcmf_msgbuf_init_pktids(NR_TX_PKTIDS,
1476 DMA_TO_DEVICE);
1477 if (!msgbuf->tx_pktids)
1478 goto fail;
1479 msgbuf->rx_pktids = brcmf_msgbuf_init_pktids(NR_RX_PKTIDS,
1480 DMA_FROM_DEVICE);
1481 if (!msgbuf->rx_pktids)
1482 goto fail;
1483
1484 msgbuf->flow = brcmf_flowring_attach(drvr->bus_if->dev,
1485 if_msgbuf->nrof_flowrings);
1486 if (!msgbuf->flow)
1487 goto fail;
1488
1489
1490 brcmf_dbg(MSGBUF, "Feeding buffers, rx data %d, rx event %d, rx ioctl resp %d\n",
1491 msgbuf->max_rxbufpost, msgbuf->max_eventbuf,
1492 msgbuf->max_ioctlrespbuf);
1493 count = 0;
1494 do {
1495 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
1496 if (msgbuf->max_rxbufpost != msgbuf->rxbufpost)
1497 msleep(10);
1498 else
1499 break;
1500 count++;
1501 } while (count < 10);
1502 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1503 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
1504
3ba06610
HM		 1505 INIT_WORK(&msgbuf->flowring_work, brcmf_msgbuf_flowring_worker);
1506 spin_lock_init(&msgbuf->flowring_work_lock);
1507 INIT_LIST_HEAD(&msgbuf->work_queue);
1508
2bb66a81
FL		 1509 brcmf_debugfs_add_entry(drvr, "msgbuf_stats", brcmf_msgbuf_stats_read);
1510
9a1bb602
HM		 1511 return 0;
1512
1513fail:
1514 if (msgbuf) {
1515 kfree(msgbuf->flow_map);
1516 kfree(msgbuf->txstatus_done_map);
1517 brcmf_msgbuf_release_pktids(msgbuf);
2d116b88 1518 kfree(msgbuf->flowring_dma_handle);
9a1bb602
HM		 1519 if (msgbuf->ioctbuf)
1520 dma_free_coherent(drvr->bus_if->dev,
1521 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1522 msgbuf->ioctbuf,
1523 msgbuf->ioctbuf_handle);
1524 kfree(msgbuf);
1525 }
1526 return -ENOMEM;
1527}
1528
1529
1530void brcmf_proto_msgbuf_detach(struct brcmf_pub *drvr)
1531{
1532 struct brcmf_msgbuf *msgbuf;
3ba06610 1533 struct brcmf_msgbuf_work_item *work;
9a1bb602
HM		 1534
1535 brcmf_dbg(TRACE, "Enter\n");
1536 if (drvr->proto->pd) {
1537 msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
3ba06610
HM		 1538 cancel_work_sync(&msgbuf->flowring_work);
1539 while (!list_empty(&msgbuf->work_queue)) {
1540 work = list_first_entry(&msgbuf->work_queue,
1541 struct brcmf_msgbuf_work_item,
1542 queue);
1543 list_del(&work->queue);
1544 kfree(work);
1545 }
9a1bb602
HM		 1546 kfree(msgbuf->flow_map);
1547 kfree(msgbuf->txstatus_done_map);
1548 if (msgbuf->txflow_wq)
1549 destroy_workqueue(msgbuf->txflow_wq);
1550
1551 brcmf_flowring_detach(msgbuf->flow);
1552 dma_free_coherent(drvr->bus_if->dev,
1553 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1554 msgbuf->ioctbuf, msgbuf->ioctbuf_handle);
1555 brcmf_msgbuf_release_pktids(msgbuf);
2d116b88 1556 kfree(msgbuf->flowring_dma_handle);
9a1bb602
HM		 1557 kfree(msgbuf);
1558 drvr->proto->pd = NULL;
1559 }
1560}
Linux kernel - Deliverables
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