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brcmfmac: Fix msgbuf flow control.
[deliverable/linux.git] / drivers / net / wireless / 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
27#include "dhd.h"
28#include "dhd_dbg.h"
29#include "proto.h"
30#include "msgbuf.h"
31#include "commonring.h"
32#include "flowring.h"
33#include "dhd_bus.h"
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
76
77struct msgbuf_common_hdr {
78 u8 msgtype;
79 u8 ifidx;
80 u8 flags;
81 u8 rsvd0;
82 __le32 request_id;
83};
84
85struct msgbuf_buf_addr {
86 __le32 low_addr;
87 __le32 high_addr;
88};
89
90struct msgbuf_ioctl_req_hdr {
91 struct msgbuf_common_hdr msg;
92 __le32 cmd;
93 __le16 trans_id;
94 __le16 input_buf_len;
95 __le16 output_buf_len;
96 __le16 rsvd0[3];
97 struct msgbuf_buf_addr req_buf_addr;
98 __le32 rsvd1[2];
99};
100
101struct msgbuf_tx_msghdr {
102 struct msgbuf_common_hdr msg;
103 u8 txhdr[ETH_HLEN];
104 u8 flags;
105 u8 seg_cnt;
106 struct msgbuf_buf_addr metadata_buf_addr;
107 struct msgbuf_buf_addr data_buf_addr;
108 __le16 metadata_buf_len;
109 __le16 data_len;
110 __le32 rsvd0;
111};
112
113struct msgbuf_rx_bufpost {
114 struct msgbuf_common_hdr msg;
115 __le16 metadata_buf_len;
116 __le16 data_buf_len;
117 __le32 rsvd0;
118 struct msgbuf_buf_addr metadata_buf_addr;
119 struct msgbuf_buf_addr data_buf_addr;
120};
121
122struct msgbuf_rx_ioctl_resp_or_event {
123 struct msgbuf_common_hdr msg;
124 __le16 host_buf_len;
125 __le16 rsvd0[3];
126 struct msgbuf_buf_addr host_buf_addr;
127 __le32 rsvd1[4];
128};
129
130struct msgbuf_completion_hdr {
131 __le16 status;
132 __le16 flow_ring_id;
133};
134
135struct msgbuf_rx_event {
136 struct msgbuf_common_hdr msg;
137 struct msgbuf_completion_hdr compl_hdr;
138 __le16 event_data_len;
139 __le16 seqnum;
140 __le16 rsvd0[4];
141};
142
143struct msgbuf_ioctl_resp_hdr {
144 struct msgbuf_common_hdr msg;
145 struct msgbuf_completion_hdr compl_hdr;
146 __le16 resp_len;
147 __le16 trans_id;
148 __le32 cmd;
149 __le32 rsvd0;
150};
151
152struct msgbuf_tx_status {
153 struct msgbuf_common_hdr msg;
154 struct msgbuf_completion_hdr compl_hdr;
155 __le16 metadata_len;
156 __le16 tx_status;
157};
158
159struct msgbuf_rx_complete {
160 struct msgbuf_common_hdr msg;
161 struct msgbuf_completion_hdr compl_hdr;
162 __le16 metadata_len;
163 __le16 data_len;
164 __le16 data_offset;
165 __le16 flags;
166 __le32 rx_status_0;
167 __le32 rx_status_1;
168 __le32 rsvd0;
169};
170
171struct msgbuf_tx_flowring_create_req {
172 struct msgbuf_common_hdr msg;
173 u8 da[ETH_ALEN];
174 u8 sa[ETH_ALEN];
175 u8 tid;
176 u8 if_flags;
177 __le16 flow_ring_id;
178 u8 tc;
179 u8 priority;
180 __le16 int_vector;
181 __le16 max_items;
182 __le16 len_item;
183 struct msgbuf_buf_addr flow_ring_addr;
184};
185
186struct msgbuf_tx_flowring_delete_req {
187 struct msgbuf_common_hdr msg;
188 __le16 flow_ring_id;
189 __le16 reason;
190 __le32 rsvd0[7];
191};
192
193struct msgbuf_flowring_create_resp {
194 struct msgbuf_common_hdr msg;
195 struct msgbuf_completion_hdr compl_hdr;
196 __le32 rsvd0[3];
197};
198
199struct msgbuf_flowring_delete_resp {
200 struct msgbuf_common_hdr msg;
201 struct msgbuf_completion_hdr compl_hdr;
202 __le32 rsvd0[3];
203};
204
205struct msgbuf_flowring_flush_resp {
206 struct msgbuf_common_hdr msg;
207 struct msgbuf_completion_hdr compl_hdr;
208 __le32 rsvd0[3];
209};
210
211struct brcmf_msgbuf {
212 struct brcmf_pub *drvr;
213
214 struct brcmf_commonring **commonrings;
215 struct brcmf_commonring **flowrings;
216 dma_addr_t *flowring_dma_handle;
217 u16 nrof_flowrings;
218
219 u16 rx_dataoffset;
220 u32 max_rxbufpost;
221 u16 rx_metadata_offset;
222 u32 rxbufpost;
223
224 u32 max_ioctlrespbuf;
225 u32 cur_ioctlrespbuf;
226 u32 max_eventbuf;
227 u32 cur_eventbuf;
228
229 void *ioctbuf;
230 dma_addr_t ioctbuf_handle;
231 u32 ioctbuf_phys_hi;
232 u32 ioctbuf_phys_lo;
233 u32 ioctl_resp_status;
234 u32 ioctl_resp_ret_len;
235 u32 ioctl_resp_pktid;
236
237 u16 data_seq_no;
238 u16 ioctl_seq_no;
239 u32 reqid;
240 wait_queue_head_t ioctl_resp_wait;
241 bool ctl_completed;
242
243 struct brcmf_msgbuf_pktids *tx_pktids;
244 struct brcmf_msgbuf_pktids *rx_pktids;
245 struct brcmf_flowring *flow;
246
247 struct workqueue_struct *txflow_wq;
248 struct work_struct txflow_work;
249 unsigned long *flow_map;
250 unsigned long *txstatus_done_map;
251};
252
253struct brcmf_msgbuf_pktid {
254 atomic_t allocated;
255 u16 data_offset;
256 struct sk_buff *skb;
257 dma_addr_t physaddr;
258};
259
260struct brcmf_msgbuf_pktids {
261 u32 array_size;
262 u32 last_allocated_idx;
263 enum dma_data_direction direction;
264 struct brcmf_msgbuf_pktid *array;
265};
266
267
268/* dma flushing needs implementation for mips and arm platforms. Should
269 * be put in util. Note, this is not real flushing. It is virtual non
270 * cached memory. Only write buffers should have to be drained. Though
271 * this may be different depending on platform......
272 */
273#define brcmf_dma_flush(addr, len)
274#define brcmf_dma_invalidate_cache(addr, len)
275
276
277static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf);
278
279
280static struct brcmf_msgbuf_pktids *
281brcmf_msgbuf_init_pktids(u32 nr_array_entries,
282 enum dma_data_direction direction)
283{
284 struct brcmf_msgbuf_pktid *array;
285 struct brcmf_msgbuf_pktids *pktids;
286
287 array = kcalloc(nr_array_entries, sizeof(*array), GFP_ATOMIC);
288 if (!array)
289 return NULL;
290
291 pktids = kzalloc(sizeof(*pktids), GFP_ATOMIC);
292 if (!pktids) {
293 kfree(array);
294 return NULL;
295 }
296 pktids->array = array;
297 pktids->array_size = nr_array_entries;
298
299 return pktids;
300}
301
302
303static int
304brcmf_msgbuf_alloc_pktid(struct device *dev,
305 struct brcmf_msgbuf_pktids *pktids,
306 struct sk_buff *skb, u16 data_offset,
307 dma_addr_t *physaddr, u32 *idx)
308{
309 struct brcmf_msgbuf_pktid *array;
310 u32 count;
311
312 array = pktids->array;
313
314 *physaddr = dma_map_single(dev, skb->data + data_offset,
315 skb->len - data_offset, pktids->direction);
316
317 if (dma_mapping_error(dev, *physaddr)) {
318 brcmf_err("dma_map_single failed !!\n");
319 return -ENOMEM;
320 }
321
322 *idx = pktids->last_allocated_idx;
323
324 count = 0;
325 do {
326 (*idx)++;
327 if (*idx == pktids->array_size)
328 *idx = 0;
329 if (array[*idx].allocated.counter == 0)
330 if (atomic_cmpxchg(&array[*idx].allocated, 0, 1) == 0)
331 break;
332 count++;
333 } while (count < pktids->array_size);
334
335 if (count == pktids->array_size)
336 return -ENOMEM;
337
338 array[*idx].data_offset = data_offset;
339 array[*idx].physaddr = *physaddr;
340 array[*idx].skb = skb;
341
342 pktids->last_allocated_idx = *idx;
343
344 return 0;
345}
346
347
348static struct sk_buff *
349brcmf_msgbuf_get_pktid(struct device *dev, struct brcmf_msgbuf_pktids *pktids,
350 u32 idx)
351{
352 struct brcmf_msgbuf_pktid *pktid;
353 struct sk_buff *skb;
354
355 if (idx >= pktids->array_size) {
356 brcmf_err("Invalid packet id %d (max %d)\n", idx,
357 pktids->array_size);
358 return NULL;
359 }
360 if (pktids->array[idx].allocated.counter) {
361 pktid = &pktids->array[idx];
362 dma_unmap_single(dev, pktid->physaddr,
363 pktid->skb->len - pktid->data_offset,
364 pktids->direction);
365 skb = pktid->skb;
366 pktid->allocated.counter = 0;
367 return skb;
368 } else {
369 brcmf_err("Invalid packet id %d (not in use)\n", idx);
370 }
371
372 return NULL;
373}
374
375
376static void
377brcmf_msgbuf_release_array(struct device *dev,
378 struct brcmf_msgbuf_pktids *pktids)
379{
380 struct brcmf_msgbuf_pktid *array;
381 struct brcmf_msgbuf_pktid *pktid;
382 u32 count;
383
384 array = pktids->array;
385 count = 0;
386 do {
387 if (array[count].allocated.counter) {
388 pktid = &array[count];
389 dma_unmap_single(dev, pktid->physaddr,
390 pktid->skb->len - pktid->data_offset,
391 pktids->direction);
392 brcmu_pkt_buf_free_skb(pktid->skb);
393 }
394 count++;
395 } while (count < pktids->array_size);
396
397 kfree(array);
398 kfree(pktids);
399}
400
401
402static void brcmf_msgbuf_release_pktids(struct brcmf_msgbuf *msgbuf)
403{
404 if (msgbuf->rx_pktids)
405 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
406 msgbuf->rx_pktids);
407 if (msgbuf->tx_pktids)
408 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
409 msgbuf->tx_pktids);
410}
411
412
413static int brcmf_msgbuf_tx_ioctl(struct brcmf_pub *drvr, int ifidx,
414 uint cmd, void *buf, uint len)
415{
416 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
417 struct brcmf_commonring *commonring;
418 struct msgbuf_ioctl_req_hdr *request;
419 u16 buf_len;
420 void *ret_ptr;
421 int err;
422
423 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
424 brcmf_commonring_lock(commonring);
425 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
426 if (!ret_ptr) {
427 brcmf_err("Failed to reserve space in commonring\n");
428 brcmf_commonring_unlock(commonring);
429 return -ENOMEM;
430 }
431
432 msgbuf->reqid++;
433
434 request = (struct msgbuf_ioctl_req_hdr *)ret_ptr;
435 request->msg.msgtype = MSGBUF_TYPE_IOCTLPTR_REQ;
436 request->msg.ifidx = (u8)ifidx;
437 request->msg.flags = 0;
438 request->msg.request_id = cpu_to_le32(BRCMF_IOCTL_REQ_PKTID);
439 request->cmd = cpu_to_le32(cmd);
440 request->output_buf_len = cpu_to_le16(len);
441 request->trans_id = cpu_to_le16(msgbuf->reqid);
442
443 buf_len = min_t(u16, len, BRCMF_TX_IOCTL_MAX_MSG_SIZE);
444 request->input_buf_len = cpu_to_le16(buf_len);
445 request->req_buf_addr.high_addr = cpu_to_le32(msgbuf->ioctbuf_phys_hi);
446 request->req_buf_addr.low_addr = cpu_to_le32(msgbuf->ioctbuf_phys_lo);
447 if (buf)
448 memcpy(msgbuf->ioctbuf, buf, buf_len);
449 else
450 memset(msgbuf->ioctbuf, 0, buf_len);
451 brcmf_dma_flush(ioctl_buf, buf_len);
452
453 err = brcmf_commonring_write_complete(commonring);
454 brcmf_commonring_unlock(commonring);
455
456 return err;
457}
458
459
460static int brcmf_msgbuf_ioctl_resp_wait(struct brcmf_msgbuf *msgbuf)
461{
462 return wait_event_timeout(msgbuf->ioctl_resp_wait,
463 msgbuf->ctl_completed,
464 msecs_to_jiffies(MSGBUF_IOCTL_RESP_TIMEOUT));
465}
466
467
468static void brcmf_msgbuf_ioctl_resp_wake(struct brcmf_msgbuf *msgbuf)
469{
470 if (waitqueue_active(&msgbuf->ioctl_resp_wait)) {
471 msgbuf->ctl_completed = true;
472 wake_up(&msgbuf->ioctl_resp_wait);
473 }
474}
475
476
477static int brcmf_msgbuf_query_dcmd(struct brcmf_pub *drvr, int ifidx,
478 uint cmd, void *buf, uint len)
479{
480 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
481 struct sk_buff *skb = NULL;
482 int timeout;
483 int err;
484
485 brcmf_dbg(MSGBUF, "ifidx=%d, cmd=%d, len=%d\n", ifidx, cmd, len);
486 msgbuf->ctl_completed = false;
487 err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
488 if (err)
489 return err;
490
491 timeout = brcmf_msgbuf_ioctl_resp_wait(msgbuf);
492 if (!timeout) {
493 brcmf_err("Timeout on response for query command\n");
494 return -EIO;
495 }
496
497 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
498 msgbuf->rx_pktids,
499 msgbuf->ioctl_resp_pktid);
500 if (msgbuf->ioctl_resp_ret_len != 0) {
501 if (!skb) {
502 brcmf_err("Invalid packet id idx recv'd %d\n",
503 msgbuf->ioctl_resp_pktid);
504 return -EBADF;
505 }
506 memcpy(buf, skb->data, (len < msgbuf->ioctl_resp_ret_len) ?
507 len : msgbuf->ioctl_resp_ret_len);
508 }
509 if (skb)
510 brcmu_pkt_buf_free_skb(skb);
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,
524 u8 *ifidx, struct sk_buff *skb)
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
547static u32 brcmf_msgbuf_flowring_create(struct brcmf_msgbuf *msgbuf, int ifidx,
548 struct sk_buff *skb)
549{
550 struct msgbuf_tx_flowring_create_req *create;
551 struct ethhdr *eh = (struct ethhdr *)(skb->data);
552 struct brcmf_commonring *commonring;
553 void *ret_ptr;
554 u32 flowid;
555 void *dma_buf;
556 u32 dma_sz;
557 long long address;
558 int err;
559
560 flowid = brcmf_flowring_create(msgbuf->flow, eh->h_dest,
561 skb->priority, ifidx);
562 if (flowid == BRCMF_FLOWRING_INVALID_ID)
563 return flowid;
564
565 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
566
567 dma_buf = dma_alloc_coherent(msgbuf->drvr->bus_if->dev, dma_sz,
568 &msgbuf->flowring_dma_handle[flowid],
569 GFP_ATOMIC);
570 if (!dma_buf) {
571 brcmf_err("dma_alloc_coherent failed\n");
572 brcmf_flowring_delete(msgbuf->flow, flowid);
573 return BRCMF_FLOWRING_INVALID_ID;
574 }
575
576 brcmf_commonring_config(msgbuf->flowrings[flowid],
577 BRCMF_H2D_TXFLOWRING_MAX_ITEM,
578 BRCMF_H2D_TXFLOWRING_ITEMSIZE, dma_buf);
579
580 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
581 brcmf_commonring_lock(commonring);
582 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
583 if (!ret_ptr) {
584 brcmf_err("Failed to reserve space in commonring\n");
585 brcmf_commonring_unlock(commonring);
586 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
587 return BRCMF_FLOWRING_INVALID_ID;
588 }
589
590 create = (struct msgbuf_tx_flowring_create_req *)ret_ptr;
591 create->msg.msgtype = MSGBUF_TYPE_FLOW_RING_CREATE;
592 create->msg.ifidx = ifidx;
593 create->msg.request_id = 0;
594 create->tid = brcmf_flowring_tid(msgbuf->flow, flowid);
595 create->flow_ring_id = cpu_to_le16(flowid +
596 BRCMF_NROF_H2D_COMMON_MSGRINGS);
597 memcpy(create->sa, eh->h_source, ETH_ALEN);
598 memcpy(create->da, eh->h_dest, ETH_ALEN);
599 address = (long long)(long)msgbuf->flowring_dma_handle[flowid];
600 create->flow_ring_addr.high_addr = cpu_to_le32(address >> 32);
601 create->flow_ring_addr.low_addr = cpu_to_le32(address & 0xffffffff);
602 create->max_items = cpu_to_le16(BRCMF_H2D_TXFLOWRING_MAX_ITEM);
603 create->len_item = cpu_to_le16(BRCMF_H2D_TXFLOWRING_ITEMSIZE);
604
605 brcmf_dbg(MSGBUF, "Send Flow Create Req flow ID %d for peer %pM prio %d ifindex %d\n",
606 flowid, eh->h_dest, create->tid, ifidx);
607
608 err = brcmf_commonring_write_complete(commonring);
609 brcmf_commonring_unlock(commonring);
610 if (err) {
611 brcmf_err("Failed to write commonring\n");
612 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
613 return BRCMF_FLOWRING_INVALID_ID;
614 }
615
616 return flowid;
617}
618
619
620static void brcmf_msgbuf_txflow(struct brcmf_msgbuf *msgbuf, u8 flowid)
621{
622 struct brcmf_flowring *flow = msgbuf->flow;
623 struct brcmf_commonring *commonring;
624 void *ret_ptr;
625 u32 count;
626 struct sk_buff *skb;
627 dma_addr_t physaddr;
628 u32 pktid;
629 struct msgbuf_tx_msghdr *tx_msghdr;
630 long long address;
631
632 commonring = msgbuf->flowrings[flowid];
633 if (!brcmf_commonring_write_available(commonring))
634 return;
635
636 brcmf_commonring_lock(commonring);
637
638 count = BRCMF_MSGBUF_TX_FLUSH_CNT2 - BRCMF_MSGBUF_TX_FLUSH_CNT1;
639 while (brcmf_flowring_qlen(flow, flowid)) {
640 skb = brcmf_flowring_dequeue(flow, flowid);
641 if (skb == NULL) {
642 brcmf_err("No SKB, but qlen %d\n",
643 brcmf_flowring_qlen(flow, flowid));
644 break;
645 }
646 skb_orphan(skb);
647 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
648 msgbuf->tx_pktids, skb, ETH_HLEN,
649 &physaddr, &pktid)) {
650 brcmf_flowring_reinsert(flow, flowid, skb);
651 brcmf_err("No PKTID available !!\n");
652 break;
653 }
654 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
655 if (!ret_ptr) {
656 brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
657 msgbuf->tx_pktids, pktid);
658 brcmf_flowring_reinsert(flow, flowid, skb);
659 break;
660 }
661 count++;
662
663 tx_msghdr = (struct msgbuf_tx_msghdr *)ret_ptr;
664
665 tx_msghdr->msg.msgtype = MSGBUF_TYPE_TX_POST;
666 tx_msghdr->msg.request_id = cpu_to_le32(pktid);
667 tx_msghdr->msg.ifidx = brcmf_flowring_ifidx_get(flow, flowid);
668 tx_msghdr->flags = BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3;
669 tx_msghdr->flags |= (skb->priority & 0x07) <<
670 BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT;
671 tx_msghdr->seg_cnt = 1;
672 memcpy(tx_msghdr->txhdr, skb->data, ETH_HLEN);
673 tx_msghdr->data_len = cpu_to_le16(skb->len - ETH_HLEN);
674 address = (long long)(long)physaddr;
675 tx_msghdr->data_buf_addr.high_addr = cpu_to_le32(address >> 32);
676 tx_msghdr->data_buf_addr.low_addr =
677 cpu_to_le32(address & 0xffffffff);
678 tx_msghdr->metadata_buf_len = 0;
679 tx_msghdr->metadata_buf_addr.high_addr = 0;
680 tx_msghdr->metadata_buf_addr.low_addr = 0;
681 if (count >= BRCMF_MSGBUF_TX_FLUSH_CNT2) {
682 brcmf_commonring_write_complete(commonring);
683 count = 0;
684 }
685 }
686 if (count)
687 brcmf_commonring_write_complete(commonring);
688 brcmf_commonring_unlock(commonring);
689}
690
691
692static void brcmf_msgbuf_txflow_worker(struct work_struct *worker)
693{
694 struct brcmf_msgbuf *msgbuf;
695 u32 flowid;
696
697 msgbuf = container_of(worker, struct brcmf_msgbuf, txflow_work);
698 for_each_set_bit(flowid, msgbuf->flow_map, msgbuf->nrof_flowrings) {
699 clear_bit(flowid, msgbuf->flow_map);
700 brcmf_msgbuf_txflow(msgbuf, flowid);
701 }
702}
703
704
705static int brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf *msgbuf, u32 flowid)
706{
707 set_bit(flowid, msgbuf->flow_map);
708 queue_work(msgbuf->txflow_wq, &msgbuf->txflow_work);
709
710 return 0;
711}
712
713
714static int brcmf_msgbuf_txdata(struct brcmf_pub *drvr, int ifidx,
715 u8 offset, struct sk_buff *skb)
716{
717 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
718 struct brcmf_flowring *flow = msgbuf->flow;
719 struct ethhdr *eh = (struct ethhdr *)(skb->data);
720 u32 flowid;
721
722 flowid = brcmf_flowring_lookup(flow, eh->h_dest, skb->priority, ifidx);
723 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
724 flowid = brcmf_msgbuf_flowring_create(msgbuf, ifidx, skb);
725 if (flowid == BRCMF_FLOWRING_INVALID_ID)
726 return -ENOMEM;
727 }
728 brcmf_flowring_enqueue(flow, flowid, skb);
729 brcmf_msgbuf_schedule_txdata(msgbuf, flowid);
730
731 return 0;
732}
733
734
735static void
736brcmf_msgbuf_configure_addr_mode(struct brcmf_pub *drvr, int ifidx,
737 enum proto_addr_mode addr_mode)
738{
739 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
740
741 brcmf_flowring_configure_addr_mode(msgbuf->flow, ifidx, addr_mode);
742}
743
744
745static void
746brcmf_msgbuf_delete_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
747{
748 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
749
750 brcmf_flowring_delete_peer(msgbuf->flow, ifidx, peer);
751}
752
753
754static void
755brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf *msgbuf, void *buf)
756{
757 struct msgbuf_ioctl_resp_hdr *ioctl_resp;
758
759 ioctl_resp = (struct msgbuf_ioctl_resp_hdr *)buf;
760
761 msgbuf->ioctl_resp_status = le16_to_cpu(ioctl_resp->compl_hdr.status);
762 msgbuf->ioctl_resp_ret_len = le16_to_cpu(ioctl_resp->resp_len);
763 msgbuf->ioctl_resp_pktid = le32_to_cpu(ioctl_resp->msg.request_id);
764
765 brcmf_msgbuf_ioctl_resp_wake(msgbuf);
766
767 if (msgbuf->cur_ioctlrespbuf)
768 msgbuf->cur_ioctlrespbuf--;
769 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
770}
771
772
773static void
774brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf *msgbuf, void *buf)
775{
776 struct msgbuf_tx_status *tx_status;
777 u32 idx;
778 struct sk_buff *skb;
779 u16 flowid;
780
781 tx_status = (struct msgbuf_tx_status *)buf;
782 idx = le32_to_cpu(tx_status->msg.request_id);
783 flowid = le16_to_cpu(tx_status->compl_hdr.flow_ring_id);
784 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
785 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
786 msgbuf->tx_pktids, idx);
787 if (!skb) {
788 brcmf_err("Invalid packet id idx recv'd %d\n", idx);
789 return;
790 }
791
792 set_bit(flowid, msgbuf->txstatus_done_map);
793
794 brcmf_txfinalize(msgbuf->drvr, skb, tx_status->msg.ifidx, true);
795}
796
797
798static u32 brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf *msgbuf, u32 count)
799{
800 struct brcmf_commonring *commonring;
801 void *ret_ptr;
802 struct sk_buff *skb;
803 u16 alloced;
804 u32 pktlen;
805 dma_addr_t physaddr;
806 struct msgbuf_rx_bufpost *rx_bufpost;
807 long long address;
808 u32 pktid;
809 u32 i;
810
811 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
812 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
813 count,
814 &alloced);
815 if (!ret_ptr) {
816 brcmf_err("Failed to reserve space in commonring\n");
817 return 0;
818 }
819
820 for (i = 0; i < alloced; i++) {
821 rx_bufpost = (struct msgbuf_rx_bufpost *)ret_ptr;
822 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
823
824 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
825
826 if (skb == NULL) {
827 brcmf_err("Failed to alloc SKB\n");
828 brcmf_commonring_write_cancel(commonring, alloced - i);
829 break;
830 }
831
832 pktlen = skb->len;
833 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
834 msgbuf->rx_pktids, skb, 0,
835 &physaddr, &pktid)) {
836 dev_kfree_skb_any(skb);
837 brcmf_err("No PKTID available !!\n");
838 brcmf_commonring_write_cancel(commonring, alloced - i);
839 break;
840 }
841
842 if (msgbuf->rx_metadata_offset) {
843 address = (long long)(long)physaddr;
844 rx_bufpost->metadata_buf_len =
845 cpu_to_le16(msgbuf->rx_metadata_offset);
846 rx_bufpost->metadata_buf_addr.high_addr =
847 cpu_to_le32(address >> 32);
848 rx_bufpost->metadata_buf_addr.low_addr =
849 cpu_to_le32(address & 0xffffffff);
850
851 skb_pull(skb, msgbuf->rx_metadata_offset);
852 pktlen = skb->len;
853 physaddr += msgbuf->rx_metadata_offset;
854 }
855 rx_bufpost->msg.msgtype = MSGBUF_TYPE_RXBUF_POST;
856 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
857
858 address = (long long)(long)physaddr;
859 rx_bufpost->data_buf_len = cpu_to_le16((u16)pktlen);
860 rx_bufpost->data_buf_addr.high_addr =
861 cpu_to_le32(address >> 32);
862 rx_bufpost->data_buf_addr.low_addr =
863 cpu_to_le32(address & 0xffffffff);
864
865 ret_ptr += brcmf_commonring_len_item(commonring);
866 }
867
868 if (i)
869 brcmf_commonring_write_complete(commonring);
870
871 return i;
872}
873
874
875static void
876brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf *msgbuf)
877{
878 u32 fillbufs;
879 u32 retcount;
880
881 fillbufs = msgbuf->max_rxbufpost - msgbuf->rxbufpost;
882
883 while (fillbufs) {
884 retcount = brcmf_msgbuf_rxbuf_data_post(msgbuf, fillbufs);
885 if (!retcount)
886 break;
887 msgbuf->rxbufpost += retcount;
888 fillbufs -= retcount;
889 }
890}
891
892
893static void
894brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf *msgbuf, u16 rxcnt)
895{
896 msgbuf->rxbufpost -= rxcnt;
897 if (msgbuf->rxbufpost <= (msgbuf->max_rxbufpost -
898 BRCMF_MSGBUF_RXBUFPOST_THRESHOLD))
899 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
900}
901
902
903static u32
904brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf *msgbuf, bool event_buf,
905 u32 count)
906{
907 struct brcmf_commonring *commonring;
908 void *ret_ptr;
909 struct sk_buff *skb;
910 u16 alloced;
911 u32 pktlen;
912 dma_addr_t physaddr;
913 struct msgbuf_rx_ioctl_resp_or_event *rx_bufpost;
914 long long address;
915 u32 pktid;
916 u32 i;
917
918 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
919 brcmf_commonring_lock(commonring);
920 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
921 count,
922 &alloced);
923 if (!ret_ptr) {
924 brcmf_err("Failed to reserve space in commonring\n");
925 brcmf_commonring_unlock(commonring);
926 return 0;
927 }
928
929 for (i = 0; i < alloced; i++) {
930 rx_bufpost = (struct msgbuf_rx_ioctl_resp_or_event *)ret_ptr;
931 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
932
933 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
934
935 if (skb == NULL) {
936 brcmf_err("Failed to alloc SKB\n");
937 brcmf_commonring_write_cancel(commonring, alloced - i);
938 break;
939 }
940
941 pktlen = skb->len;
942 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
943 msgbuf->rx_pktids, skb, 0,
944 &physaddr, &pktid)) {
945 dev_kfree_skb_any(skb);
946 brcmf_err("No PKTID available !!\n");
947 brcmf_commonring_write_cancel(commonring, alloced - i);
948 break;
949 }
950 if (event_buf)
951 rx_bufpost->msg.msgtype = MSGBUF_TYPE_EVENT_BUF_POST;
952 else
953 rx_bufpost->msg.msgtype =
954 MSGBUF_TYPE_IOCTLRESP_BUF_POST;
955 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
956
957 address = (long long)(long)physaddr;
958 rx_bufpost->host_buf_len = cpu_to_le16((u16)pktlen);
959 rx_bufpost->host_buf_addr.high_addr =
960 cpu_to_le32(address >> 32);
961 rx_bufpost->host_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 brcmf_commonring_unlock(commonring);
971
972 return i;
973}
974
975
976static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf)
977{
978 u32 count;
979
980 count = msgbuf->max_ioctlrespbuf - msgbuf->cur_ioctlrespbuf;
981 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, false, count);
982 msgbuf->cur_ioctlrespbuf += count;
983}
984
985
986static void brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf *msgbuf)
987{
988 u32 count;
989
990 count = msgbuf->max_eventbuf - msgbuf->cur_eventbuf;
991 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, true, count);
992 msgbuf->cur_eventbuf += count;
993}
994
995
996static void
997brcmf_msgbuf_rx_skb(struct brcmf_msgbuf *msgbuf, struct sk_buff *skb,
998 u8 ifidx)
999{
1000 struct brcmf_if *ifp;
1001
1002 ifp = msgbuf->drvr->iflist[ifidx];
1003 if (!ifp || !ifp->ndev) {
1004 brcmu_pkt_buf_free_skb(skb);
1005 return;
1006 }
1007 brcmf_netif_rx(ifp, skb);
1008}
1009
1010
1011static void brcmf_msgbuf_process_event(struct brcmf_msgbuf *msgbuf, void *buf)
1012{
1013 struct msgbuf_rx_event *event;
1014 u32 idx;
1015 u16 buflen;
1016 struct sk_buff *skb;
1017
1018 event = (struct msgbuf_rx_event *)buf;
1019 idx = le32_to_cpu(event->msg.request_id);
1020 buflen = le16_to_cpu(event->event_data_len);
1021
1022 if (msgbuf->cur_eventbuf)
1023 msgbuf->cur_eventbuf--;
1024 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1025
1026 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1027 msgbuf->rx_pktids, idx);
1028 if (!skb)
1029 return;
1030
1031 if (msgbuf->rx_dataoffset)
1032 skb_pull(skb, msgbuf->rx_dataoffset);
1033
1034 skb_trim(skb, buflen);
1035
1036 brcmf_msgbuf_rx_skb(msgbuf, skb, event->msg.ifidx);
1037}
1038
1039
1040static void
1041brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf *msgbuf, void *buf)
1042{
1043 struct msgbuf_rx_complete *rx_complete;
1044 struct sk_buff *skb;
1045 u16 data_offset;
1046 u16 buflen;
1047 u32 idx;
1048
1049 brcmf_msgbuf_update_rxbufpost_count(msgbuf, 1);
1050
1051 rx_complete = (struct msgbuf_rx_complete *)buf;
1052 data_offset = le16_to_cpu(rx_complete->data_offset);
1053 buflen = le16_to_cpu(rx_complete->data_len);
1054 idx = le32_to_cpu(rx_complete->msg.request_id);
1055
1056 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1057 msgbuf->rx_pktids, idx);
1058
1059 if (data_offset)
1060 skb_pull(skb, data_offset);
1061 else if (msgbuf->rx_dataoffset)
1062 skb_pull(skb, msgbuf->rx_dataoffset);
1063
1064 skb_trim(skb, buflen);
1065
1066 brcmf_msgbuf_rx_skb(msgbuf, skb, rx_complete->msg.ifidx);
1067}
1068
1069
1070static void
1071brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf *msgbuf,
1072 void *buf)
1073{
1074 struct msgbuf_flowring_create_resp *flowring_create_resp;
1075 u16 status;
1076 u16 flowid;
1077
1078 flowring_create_resp = (struct msgbuf_flowring_create_resp *)buf;
1079
1080 flowid = le16_to_cpu(flowring_create_resp->compl_hdr.flow_ring_id);
1081 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
1082 status = le16_to_cpu(flowring_create_resp->compl_hdr.status);
1083
1084 if (status) {
1085 brcmf_err("Flowring creation failed, code %d\n", status);
1086 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1087 return;
1088 }
1089 brcmf_dbg(MSGBUF, "Flowring %d Create response status %d\n", flowid,
1090 status);
1091
1092 brcmf_flowring_open(msgbuf->flow, flowid);
1093
1094 brcmf_msgbuf_schedule_txdata(msgbuf, flowid);
1095}
1096
1097
1098static void
1099brcmf_msgbuf_process_flow_ring_delete_response(struct brcmf_msgbuf *msgbuf,
1100 void *buf)
1101{
1102 struct msgbuf_flowring_delete_resp *flowring_delete_resp;
1103 u16 status;
1104 u16 flowid;
1105
1106 flowring_delete_resp = (struct msgbuf_flowring_delete_resp *)buf;
1107
1108 flowid = le16_to_cpu(flowring_delete_resp->compl_hdr.flow_ring_id);
1109 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
1110 status = le16_to_cpu(flowring_delete_resp->compl_hdr.status);
1111
1112 if (status) {
1113 brcmf_err("Flowring deletion failed, code %d\n", status);
1114 brcmf_flowring_delete(msgbuf->flow, flowid);
1115 return;
1116 }
1117 brcmf_dbg(MSGBUF, "Flowring %d Delete response status %d\n", flowid,
1118 status);
1119
1120 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1121}
1122
1123
1124static void brcmf_msgbuf_process_msgtype(struct brcmf_msgbuf *msgbuf, void *buf)
1125{
1126 struct msgbuf_common_hdr *msg;
1127
1128 msg = (struct msgbuf_common_hdr *)buf;
1129 switch (msg->msgtype) {
1130 case MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT:
1131 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT\n");
1132 brcmf_msgbuf_process_flow_ring_create_response(msgbuf, buf);
1133 break;
1134 case MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT:
1135 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT\n");
1136 brcmf_msgbuf_process_flow_ring_delete_response(msgbuf, buf);
1137 break;
1138 case MSGBUF_TYPE_IOCTLPTR_REQ_ACK:
1139 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTLPTR_REQ_ACK\n");
1140 break;
1141 case MSGBUF_TYPE_IOCTL_CMPLT:
1142 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTL_CMPLT\n");
1143 brcmf_msgbuf_process_ioctl_complete(msgbuf, buf);
1144 break;
1145 case MSGBUF_TYPE_WL_EVENT:
1146 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_WL_EVENT\n");
1147 brcmf_msgbuf_process_event(msgbuf, buf);
1148 break;
1149 case MSGBUF_TYPE_TX_STATUS:
1150 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_TX_STATUS\n");
1151 brcmf_msgbuf_process_txstatus(msgbuf, buf);
1152 break;
1153 case MSGBUF_TYPE_RX_CMPLT:
1154 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RX_CMPLT\n");
1155 brcmf_msgbuf_process_rx_complete(msgbuf, buf);
1156 break;
1157 default:
1158 brcmf_err("Unsupported msgtype %d\n", msg->msgtype);
1159 break;
1160 }
1161}
1162
1163
1164static void brcmf_msgbuf_process_rx(struct brcmf_msgbuf *msgbuf,
1165 struct brcmf_commonring *commonring)
1166{
1167 void *buf;
1168 u16 count;
1169
1170again:
1171 buf = brcmf_commonring_get_read_ptr(commonring, &count);
1172 if (buf == NULL)
1173 return;
1174
1175 while (count) {
1176 brcmf_msgbuf_process_msgtype(msgbuf,
1177 buf + msgbuf->rx_dataoffset);
1178 buf += brcmf_commonring_len_item(commonring);
1179 count--;
1180 }
1181 brcmf_commonring_read_complete(commonring);
1182
1183 if (commonring->r_ptr == 0)
1184 goto again;
1185}
1186
1187
1188int brcmf_proto_msgbuf_rx_trigger(struct device *dev)
1189{
1190 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1191 struct brcmf_pub *drvr = bus_if->drvr;
1192 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1193 void *buf;
1194 u32 flowid;
1195
1196 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1197 brcmf_msgbuf_process_rx(msgbuf, buf);
1198 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1199 brcmf_msgbuf_process_rx(msgbuf, buf);
1200 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1201 brcmf_msgbuf_process_rx(msgbuf, buf);
1202
1203 for_each_set_bit(flowid, msgbuf->txstatus_done_map,
1204 msgbuf->nrof_flowrings) {
1205 clear_bit(flowid, msgbuf->txstatus_done_map);
1206 if (brcmf_flowring_qlen(msgbuf->flow, flowid))
1207 brcmf_msgbuf_schedule_txdata(msgbuf, flowid);
1208 }
1209
1210 return 0;
1211}
1212
1213
1214void brcmf_msgbuf_delete_flowring(struct brcmf_pub *drvr, u8 flowid)
1215{
1216 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1217 struct msgbuf_tx_flowring_delete_req *delete;
1218 struct brcmf_commonring *commonring;
1219 void *ret_ptr;
1220 u8 ifidx;
1221 int err;
1222
1223 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1224 brcmf_commonring_lock(commonring);
1225 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
1226 if (!ret_ptr) {
1227 brcmf_err("FW unaware, flowring will be removed !!\n");
1228 brcmf_commonring_unlock(commonring);
1229 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1230 return;
1231 }
1232
1233 delete = (struct msgbuf_tx_flowring_delete_req *)ret_ptr;
1234
1235 ifidx = brcmf_flowring_ifidx_get(msgbuf->flow, flowid);
1236
1237 delete->msg.msgtype = MSGBUF_TYPE_FLOW_RING_DELETE;
1238 delete->msg.ifidx = ifidx;
1239 delete->msg.request_id = 0;
1240
1241 delete->flow_ring_id = cpu_to_le16(flowid +
1242 BRCMF_NROF_H2D_COMMON_MSGRINGS);
1243 delete->reason = 0;
1244
1245 brcmf_dbg(MSGBUF, "Send Flow Delete Req flow ID %d, ifindex %d\n",
1246 flowid, ifidx);
1247
1248 err = brcmf_commonring_write_complete(commonring);
1249 brcmf_commonring_unlock(commonring);
1250 if (err) {
1251 brcmf_err("Failed to submit RING_DELETE, flowring will be removed\n");
1252 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1253 }
1254}
1255
1256
1257int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
1258{
1259 struct brcmf_bus_msgbuf *if_msgbuf;
1260 struct brcmf_msgbuf *msgbuf;
1261 long long address;
1262 u32 count;
1263
1264 if_msgbuf = drvr->bus_if->msgbuf;
1265 msgbuf = kzalloc(sizeof(*msgbuf), GFP_ATOMIC);
1266 if (!msgbuf)
1267 goto fail;
1268
1269 msgbuf->txflow_wq = create_singlethread_workqueue("msgbuf_txflow");
1270 if (msgbuf->txflow_wq == NULL) {
1271 brcmf_err("workqueue creation failed\n");
1272 goto fail;
1273 }
1274 INIT_WORK(&msgbuf->txflow_work, brcmf_msgbuf_txflow_worker);
1275 count = BITS_TO_LONGS(if_msgbuf->nrof_flowrings);
1276 msgbuf->flow_map = kzalloc(count, GFP_ATOMIC);
1277 if (!msgbuf->flow_map)
1278 goto fail;
1279
1280 msgbuf->txstatus_done_map = kzalloc(count, GFP_ATOMIC);
1281 if (!msgbuf->txstatus_done_map)
1282 goto fail;
1283
1284 msgbuf->drvr = drvr;
1285 msgbuf->ioctbuf = dma_alloc_coherent(drvr->bus_if->dev,
1286 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1287 &msgbuf->ioctbuf_handle,
1288 GFP_ATOMIC);
1289 if (!msgbuf->ioctbuf)
1290 goto fail;
1291 address = (long long)(long)msgbuf->ioctbuf_handle;
1292 msgbuf->ioctbuf_phys_hi = address >> 32;
1293 msgbuf->ioctbuf_phys_lo = address & 0xffffffff;
1294
1295 drvr->proto->hdrpull = brcmf_msgbuf_hdrpull;
1296 drvr->proto->query_dcmd = brcmf_msgbuf_query_dcmd;
1297 drvr->proto->set_dcmd = brcmf_msgbuf_set_dcmd;
1298 drvr->proto->txdata = brcmf_msgbuf_txdata;
1299 drvr->proto->configure_addr_mode = brcmf_msgbuf_configure_addr_mode;
1300 drvr->proto->delete_peer = brcmf_msgbuf_delete_peer;
1301 drvr->proto->pd = msgbuf;
1302
1303 init_waitqueue_head(&msgbuf->ioctl_resp_wait);
1304
1305 msgbuf->commonrings =
1306 (struct brcmf_commonring **)if_msgbuf->commonrings;
1307 msgbuf->flowrings = (struct brcmf_commonring **)if_msgbuf->flowrings;
1308 msgbuf->nrof_flowrings = if_msgbuf->nrof_flowrings;
1309 msgbuf->flowring_dma_handle = kzalloc(msgbuf->nrof_flowrings *
1310 sizeof(*msgbuf->flowring_dma_handle), GFP_ATOMIC);
1311
1312 msgbuf->rx_dataoffset = if_msgbuf->rx_dataoffset;
1313 msgbuf->max_rxbufpost = if_msgbuf->max_rxbufpost;
1314
1315 msgbuf->max_ioctlrespbuf = BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST;
1316 msgbuf->max_eventbuf = BRCMF_MSGBUF_MAX_EVENTBUF_POST;
1317
1318 msgbuf->tx_pktids = brcmf_msgbuf_init_pktids(NR_TX_PKTIDS,
1319 DMA_TO_DEVICE);
1320 if (!msgbuf->tx_pktids)
1321 goto fail;
1322 msgbuf->rx_pktids = brcmf_msgbuf_init_pktids(NR_RX_PKTIDS,
1323 DMA_FROM_DEVICE);
1324 if (!msgbuf->rx_pktids)
1325 goto fail;
1326
1327 msgbuf->flow = brcmf_flowring_attach(drvr->bus_if->dev,
1328 if_msgbuf->nrof_flowrings);
1329 if (!msgbuf->flow)
1330 goto fail;
1331
1332
1333 brcmf_dbg(MSGBUF, "Feeding buffers, rx data %d, rx event %d, rx ioctl resp %d\n",
1334 msgbuf->max_rxbufpost, msgbuf->max_eventbuf,
1335 msgbuf->max_ioctlrespbuf);
1336 count = 0;
1337 do {
1338 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
1339 if (msgbuf->max_rxbufpost != msgbuf->rxbufpost)
1340 msleep(10);
1341 else
1342 break;
1343 count++;
1344 } while (count < 10);
1345 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1346 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
1347
1348 return 0;
1349
1350fail:
1351 if (msgbuf) {
1352 kfree(msgbuf->flow_map);
1353 kfree(msgbuf->txstatus_done_map);
1354 brcmf_msgbuf_release_pktids(msgbuf);
1355 if (msgbuf->ioctbuf)
1356 dma_free_coherent(drvr->bus_if->dev,
1357 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1358 msgbuf->ioctbuf,
1359 msgbuf->ioctbuf_handle);
1360 kfree(msgbuf);
1361 }
1362 return -ENOMEM;
1363}
1364
1365
1366void brcmf_proto_msgbuf_detach(struct brcmf_pub *drvr)
1367{
1368 struct brcmf_msgbuf *msgbuf;
1369
1370 brcmf_dbg(TRACE, "Enter\n");
1371 if (drvr->proto->pd) {
1372 msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1373
1374 kfree(msgbuf->flow_map);
1375 kfree(msgbuf->txstatus_done_map);
1376 if (msgbuf->txflow_wq)
1377 destroy_workqueue(msgbuf->txflow_wq);
1378
1379 brcmf_flowring_detach(msgbuf->flow);
1380 dma_free_coherent(drvr->bus_if->dev,
1381 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1382 msgbuf->ioctbuf, msgbuf->ioctbuf_handle);
1383 brcmf_msgbuf_release_pktids(msgbuf);
1384 kfree(msgbuf);
1385 drvr->proto->pd = NULL;
1386 }
1387}
Linux kernel - Deliverables
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