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Merge tag 'char-misc-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
[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
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
5ef1e604
HM		 76#define BRCMF_MSGBUF_DELAY_TXWORKER_THRS 64
77#define BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS 32
9a1bb602
HM		 78
79struct msgbuf_common_hdr {
80 u8 msgtype;
81 u8 ifidx;
82 u8 flags;
83 u8 rsvd0;
84 __le32 request_id;
85};
86
87struct msgbuf_buf_addr {
88 __le32 low_addr;
89 __le32 high_addr;
90};
91
92struct msgbuf_ioctl_req_hdr {
93 struct msgbuf_common_hdr msg;
94 __le32 cmd;
95 __le16 trans_id;
96 __le16 input_buf_len;
97 __le16 output_buf_len;
98 __le16 rsvd0[3];
99 struct msgbuf_buf_addr req_buf_addr;
100 __le32 rsvd1[2];
101};
102
103struct msgbuf_tx_msghdr {
104 struct msgbuf_common_hdr msg;
105 u8 txhdr[ETH_HLEN];
106 u8 flags;
107 u8 seg_cnt;
108 struct msgbuf_buf_addr metadata_buf_addr;
109 struct msgbuf_buf_addr data_buf_addr;
110 __le16 metadata_buf_len;
111 __le16 data_len;
112 __le32 rsvd0;
113};
114
115struct msgbuf_rx_bufpost {
116 struct msgbuf_common_hdr msg;
117 __le16 metadata_buf_len;
118 __le16 data_buf_len;
119 __le32 rsvd0;
120 struct msgbuf_buf_addr metadata_buf_addr;
121 struct msgbuf_buf_addr data_buf_addr;
122};
123
124struct msgbuf_rx_ioctl_resp_or_event {
125 struct msgbuf_common_hdr msg;
126 __le16 host_buf_len;
127 __le16 rsvd0[3];
128 struct msgbuf_buf_addr host_buf_addr;
129 __le32 rsvd1[4];
130};
131
132struct msgbuf_completion_hdr {
133 __le16 status;
134 __le16 flow_ring_id;
135};
136
137struct msgbuf_rx_event {
138 struct msgbuf_common_hdr msg;
139 struct msgbuf_completion_hdr compl_hdr;
140 __le16 event_data_len;
141 __le16 seqnum;
142 __le16 rsvd0[4];
143};
144
145struct msgbuf_ioctl_resp_hdr {
146 struct msgbuf_common_hdr msg;
147 struct msgbuf_completion_hdr compl_hdr;
148 __le16 resp_len;
149 __le16 trans_id;
150 __le32 cmd;
151 __le32 rsvd0;
152};
153
154struct msgbuf_tx_status {
155 struct msgbuf_common_hdr msg;
156 struct msgbuf_completion_hdr compl_hdr;
157 __le16 metadata_len;
158 __le16 tx_status;
159};
160
161struct msgbuf_rx_complete {
162 struct msgbuf_common_hdr msg;
163 struct msgbuf_completion_hdr compl_hdr;
164 __le16 metadata_len;
165 __le16 data_len;
166 __le16 data_offset;
167 __le16 flags;
168 __le32 rx_status_0;
169 __le32 rx_status_1;
170 __le32 rsvd0;
171};
172
173struct msgbuf_tx_flowring_create_req {
174 struct msgbuf_common_hdr msg;
175 u8 da[ETH_ALEN];
176 u8 sa[ETH_ALEN];
177 u8 tid;
178 u8 if_flags;
179 __le16 flow_ring_id;
180 u8 tc;
181 u8 priority;
182 __le16 int_vector;
183 __le16 max_items;
184 __le16 len_item;
185 struct msgbuf_buf_addr flow_ring_addr;
186};
187
188struct msgbuf_tx_flowring_delete_req {
189 struct msgbuf_common_hdr msg;
190 __le16 flow_ring_id;
191 __le16 reason;
192 __le32 rsvd0[7];
193};
194
195struct msgbuf_flowring_create_resp {
196 struct msgbuf_common_hdr msg;
197 struct msgbuf_completion_hdr compl_hdr;
198 __le32 rsvd0[3];
199};
200
201struct msgbuf_flowring_delete_resp {
202 struct msgbuf_common_hdr msg;
203 struct msgbuf_completion_hdr compl_hdr;
204 __le32 rsvd0[3];
205};
206
207struct msgbuf_flowring_flush_resp {
208 struct msgbuf_common_hdr msg;
209 struct msgbuf_completion_hdr compl_hdr;
210 __le32 rsvd0[3];
211};
212
3ba06610
HM		 213struct brcmf_msgbuf_work_item {
214 struct list_head queue;
215 u32 flowid;
216 int ifidx;
217 u8 sa[ETH_ALEN];
218 u8 da[ETH_ALEN];
219};
220
9a1bb602
HM		 221struct brcmf_msgbuf {
222 struct brcmf_pub *drvr;
223
224 struct brcmf_commonring **commonrings;
225 struct brcmf_commonring **flowrings;
226 dma_addr_t *flowring_dma_handle;
227 u16 nrof_flowrings;
228
229 u16 rx_dataoffset;
230 u32 max_rxbufpost;
231 u16 rx_metadata_offset;
232 u32 rxbufpost;
233
234 u32 max_ioctlrespbuf;
235 u32 cur_ioctlrespbuf;
236 u32 max_eventbuf;
237 u32 cur_eventbuf;
238
239 void *ioctbuf;
240 dma_addr_t ioctbuf_handle;
241 u32 ioctbuf_phys_hi;
242 u32 ioctbuf_phys_lo;
ff0a6230 243 int ioctl_resp_status;
9a1bb602
HM		 244 u32 ioctl_resp_ret_len;
245 u32 ioctl_resp_pktid;
246
247 u16 data_seq_no;
248 u16 ioctl_seq_no;
249 u32 reqid;
250 wait_queue_head_t ioctl_resp_wait;
251 bool ctl_completed;
252
253 struct brcmf_msgbuf_pktids *tx_pktids;
254 struct brcmf_msgbuf_pktids *rx_pktids;
255 struct brcmf_flowring *flow;
256
257 struct workqueue_struct *txflow_wq;
258 struct work_struct txflow_work;
259 unsigned long *flow_map;
260 unsigned long *txstatus_done_map;
3ba06610
HM		 261
262 struct work_struct flowring_work;
263 spinlock_t flowring_work_lock;
264 struct list_head work_queue;
9a1bb602
HM		 265};
266
267struct brcmf_msgbuf_pktid {
268 atomic_t allocated;
269 u16 data_offset;
270 struct sk_buff *skb;
271 dma_addr_t physaddr;
272};
273
274struct brcmf_msgbuf_pktids {
275 u32 array_size;
276 u32 last_allocated_idx;
277 enum dma_data_direction direction;
278 struct brcmf_msgbuf_pktid *array;
279};
280
281
282/* dma flushing needs implementation for mips and arm platforms. Should
283 * be put in util. Note, this is not real flushing. It is virtual non
284 * cached memory. Only write buffers should have to be drained. Though
285 * this may be different depending on platform......
286 */
287#define brcmf_dma_flush(addr, len)
288#define brcmf_dma_invalidate_cache(addr, len)
289
290
291static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf);
292
293
294static struct brcmf_msgbuf_pktids *
295brcmf_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
3ba06610 301 array = kcalloc(nr_array_entries, sizeof(*array), GFP_KERNEL);
9a1bb602
HM		 302 if (!array)
303 return NULL;
304
3ba06610 305 pktids = kzalloc(sizeof(*pktids), GFP_KERNEL);
9a1bb602
HM		 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
317static int
318brcmf_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
362static struct sk_buff *
363brcmf_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
390static void
391brcmf_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
416static 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
427static 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 brcmf_err("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 brcmf_dma_flush(ioctl_buf, buf_len);
466
467 err = brcmf_commonring_write_complete(commonring);
468 brcmf_commonring_unlock(commonring);
469
470 return err;
471}
472
473
474static int brcmf_msgbuf_ioctl_resp_wait(struct brcmf_msgbuf *msgbuf)
475{
476 return wait_event_timeout(msgbuf->ioctl_resp_wait,
477 msgbuf->ctl_completed,
478 msecs_to_jiffies(MSGBUF_IOCTL_RESP_TIMEOUT));
479}
480
481
482static void brcmf_msgbuf_ioctl_resp_wake(struct brcmf_msgbuf *msgbuf)
483{
484 if (waitqueue_active(&msgbuf->ioctl_resp_wait)) {
485 msgbuf->ctl_completed = true;
486 wake_up(&msgbuf->ioctl_resp_wait);
487 }
488}
489
490
491static int brcmf_msgbuf_query_dcmd(struct brcmf_pub *drvr, int ifidx,
492 uint cmd, void *buf, uint len)
493{
494 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
495 struct sk_buff *skb = NULL;
496 int timeout;
497 int err;
498
499 brcmf_dbg(MSGBUF, "ifidx=%d, cmd=%d, len=%d\n", ifidx, cmd, len);
500 msgbuf->ctl_completed = false;
501 err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
502 if (err)
503 return err;
504
505 timeout = brcmf_msgbuf_ioctl_resp_wait(msgbuf);
506 if (!timeout) {
507 brcmf_err("Timeout on response for query command\n");
508 return -EIO;
509 }
510
511 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
512 msgbuf->rx_pktids,
513 msgbuf->ioctl_resp_pktid);
514 if (msgbuf->ioctl_resp_ret_len != 0) {
515 if (!skb) {
516 brcmf_err("Invalid packet id idx recv'd %d\n",
517 msgbuf->ioctl_resp_pktid);
518 return -EBADF;
519 }
520 memcpy(buf, skb->data, (len < msgbuf->ioctl_resp_ret_len) ?
521 len : msgbuf->ioctl_resp_ret_len);
522 }
ac96ce83 523 brcmu_pkt_buf_free_skb(skb);
9a1bb602
HM		 524
525 return msgbuf->ioctl_resp_status;
526}
527
528
529static int brcmf_msgbuf_set_dcmd(struct brcmf_pub *drvr, int ifidx,
530 uint cmd, void *buf, uint len)
531{
532 return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len);
533}
534
535
536static int brcmf_msgbuf_hdrpull(struct brcmf_pub *drvr, bool do_fws,
537 u8 *ifidx, struct sk_buff *skb)
538{
539 return -ENODEV;
540}
541
542
543static void
544brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf *msgbuf, u16 flowid)
545{
546 u32 dma_sz;
547 void *dma_buf;
548
549 brcmf_dbg(MSGBUF, "Removing flowring %d\n", flowid);
550
551 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
552 dma_buf = msgbuf->flowrings[flowid]->buf_addr;
553 dma_free_coherent(msgbuf->drvr->bus_if->dev, dma_sz, dma_buf,
554 msgbuf->flowring_dma_handle[flowid]);
555
556 brcmf_flowring_delete(msgbuf->flow, flowid);
557}
558
559
3ba06610
HM		 560static struct brcmf_msgbuf_work_item *
561brcmf_msgbuf_dequeue_work(struct brcmf_msgbuf *msgbuf)
562{
563 struct brcmf_msgbuf_work_item *work = NULL;
564 ulong flags;
565
566 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
567 if (!list_empty(&msgbuf->work_queue)) {
568 work = list_first_entry(&msgbuf->work_queue,
569 struct brcmf_msgbuf_work_item, queue);
570 list_del(&work->queue);
571 }
572 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
573
574 return work;
575}
576
577
578static u32
579brcmf_msgbuf_flowring_create_worker(struct brcmf_msgbuf *msgbuf,
580 struct brcmf_msgbuf_work_item *work)
9a1bb602
HM		 581{
582 struct msgbuf_tx_flowring_create_req *create;
9a1bb602
HM		 583 struct brcmf_commonring *commonring;
584 void *ret_ptr;
585 u32 flowid;
586 void *dma_buf;
587 u32 dma_sz;
83297aaa 588 u64 address;
9a1bb602
HM		 589 int err;
590
3ba06610 591 flowid = work->flowid;
9a1bb602 592 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
9a1bb602
HM		 593 dma_buf = dma_alloc_coherent(msgbuf->drvr->bus_if->dev, dma_sz,
594 &msgbuf->flowring_dma_handle[flowid],
3ba06610 595 GFP_KERNEL);
9a1bb602
HM		 596 if (!dma_buf) {
597 brcmf_err("dma_alloc_coherent failed\n");
598 brcmf_flowring_delete(msgbuf->flow, flowid);
599 return BRCMF_FLOWRING_INVALID_ID;
600 }
601
602 brcmf_commonring_config(msgbuf->flowrings[flowid],
603 BRCMF_H2D_TXFLOWRING_MAX_ITEM,
604 BRCMF_H2D_TXFLOWRING_ITEMSIZE, dma_buf);
605
606 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
607 brcmf_commonring_lock(commonring);
608 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
609 if (!ret_ptr) {
610 brcmf_err("Failed to reserve space in commonring\n");
611 brcmf_commonring_unlock(commonring);
612 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
613 return BRCMF_FLOWRING_INVALID_ID;
614 }
615
616 create = (struct msgbuf_tx_flowring_create_req *)ret_ptr;
617 create->msg.msgtype = MSGBUF_TYPE_FLOW_RING_CREATE;
3ba06610 618 create->msg.ifidx = work->ifidx;
9a1bb602
HM		 619 create->msg.request_id = 0;
620 create->tid = brcmf_flowring_tid(msgbuf->flow, flowid);
621 create->flow_ring_id = cpu_to_le16(flowid +
622 BRCMF_NROF_H2D_COMMON_MSGRINGS);
3ba06610
HM		 623 memcpy(create->sa, work->sa, ETH_ALEN);
624 memcpy(create->da, work->da, ETH_ALEN);
83297aaa 625 address = (u64)msgbuf->flowring_dma_handle[flowid];
9a1bb602
HM		 626 create->flow_ring_addr.high_addr = cpu_to_le32(address >> 32);
627 create->flow_ring_addr.low_addr = cpu_to_le32(address & 0xffffffff);
628 create->max_items = cpu_to_le16(BRCMF_H2D_TXFLOWRING_MAX_ITEM);
629 create->len_item = cpu_to_le16(BRCMF_H2D_TXFLOWRING_ITEMSIZE);
630
631 brcmf_dbg(MSGBUF, "Send Flow Create Req flow ID %d for peer %pM prio %d ifindex %d\n",
3ba06610 632 flowid, work->da, create->tid, work->ifidx);
9a1bb602
HM		 633
634 err = brcmf_commonring_write_complete(commonring);
635 brcmf_commonring_unlock(commonring);
636 if (err) {
637 brcmf_err("Failed to write commonring\n");
638 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
639 return BRCMF_FLOWRING_INVALID_ID;
640 }
641
642 return flowid;
643}
644
645
3ba06610
HM		 646static void brcmf_msgbuf_flowring_worker(struct work_struct *work)
647{
648 struct brcmf_msgbuf *msgbuf;
649 struct brcmf_msgbuf_work_item *create;
650
651 msgbuf = container_of(work, struct brcmf_msgbuf, flowring_work);
652
653 while ((create = brcmf_msgbuf_dequeue_work(msgbuf))) {
654 brcmf_msgbuf_flowring_create_worker(msgbuf, create);
655 kfree(create);
656 }
657}
658
659
660static u32 brcmf_msgbuf_flowring_create(struct brcmf_msgbuf *msgbuf, int ifidx,
661 struct sk_buff *skb)
662{
663 struct brcmf_msgbuf_work_item *create;
664 struct ethhdr *eh = (struct ethhdr *)(skb->data);
665 u32 flowid;
666 ulong flags;
667
668 create = kzalloc(sizeof(*create), GFP_ATOMIC);
669 if (create == NULL)
670 return BRCMF_FLOWRING_INVALID_ID;
671
672 flowid = brcmf_flowring_create(msgbuf->flow, eh->h_dest,
673 skb->priority, ifidx);
674 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
675 kfree(create);
676 return flowid;
677 }
678
679 create->flowid = flowid;
680 create->ifidx = ifidx;
681 memcpy(create->sa, eh->h_source, ETH_ALEN);
682 memcpy(create->da, eh->h_dest, ETH_ALEN);
683
684 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
685 list_add_tail(&create->queue, &msgbuf->work_queue);
686 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
687 schedule_work(&msgbuf->flowring_work);
688
689 return flowid;
690}
691
692
9a1bb602
HM		 693static void brcmf_msgbuf_txflow(struct brcmf_msgbuf *msgbuf, u8 flowid)
694{
695 struct brcmf_flowring *flow = msgbuf->flow;
696 struct brcmf_commonring *commonring;
697 void *ret_ptr;
698 u32 count;
699 struct sk_buff *skb;
700 dma_addr_t physaddr;
701 u32 pktid;
702 struct msgbuf_tx_msghdr *tx_msghdr;
83297aaa 703 u64 address;
9a1bb602
HM		 704
705 commonring = msgbuf->flowrings[flowid];
706 if (!brcmf_commonring_write_available(commonring))
707 return;
708
709 brcmf_commonring_lock(commonring);
710
711 count = BRCMF_MSGBUF_TX_FLUSH_CNT2 - BRCMF_MSGBUF_TX_FLUSH_CNT1;
712 while (brcmf_flowring_qlen(flow, flowid)) {
713 skb = brcmf_flowring_dequeue(flow, flowid);
714 if (skb == NULL) {
715 brcmf_err("No SKB, but qlen %d\n",
716 brcmf_flowring_qlen(flow, flowid));
717 break;
718 }
719 skb_orphan(skb);
720 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
721 msgbuf->tx_pktids, skb, ETH_HLEN,
722 &physaddr, &pktid)) {
723 brcmf_flowring_reinsert(flow, flowid, skb);
724 brcmf_err("No PKTID available !!\n");
725 break;
726 }
727 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
728 if (!ret_ptr) {
729 brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
730 msgbuf->tx_pktids, pktid);
731 brcmf_flowring_reinsert(flow, flowid, skb);
732 break;
733 }
734 count++;
735
736 tx_msghdr = (struct msgbuf_tx_msghdr *)ret_ptr;
737
738 tx_msghdr->msg.msgtype = MSGBUF_TYPE_TX_POST;
739 tx_msghdr->msg.request_id = cpu_to_le32(pktid);
740 tx_msghdr->msg.ifidx = brcmf_flowring_ifidx_get(flow, flowid);
741 tx_msghdr->flags = BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3;
742 tx_msghdr->flags |= (skb->priority & 0x07) <<
743 BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT;
744 tx_msghdr->seg_cnt = 1;
745 memcpy(tx_msghdr->txhdr, skb->data, ETH_HLEN);
746 tx_msghdr->data_len = cpu_to_le16(skb->len - ETH_HLEN);
83297aaa 747 address = (u64)physaddr;
9a1bb602
HM		 748 tx_msghdr->data_buf_addr.high_addr = cpu_to_le32(address >> 32);
749 tx_msghdr->data_buf_addr.low_addr =
750 cpu_to_le32(address & 0xffffffff);
751 tx_msghdr->metadata_buf_len = 0;
752 tx_msghdr->metadata_buf_addr.high_addr = 0;
753 tx_msghdr->metadata_buf_addr.low_addr = 0;
5ef1e604 754 atomic_inc(&commonring->outstanding_tx);
9a1bb602
HM		 755 if (count >= BRCMF_MSGBUF_TX_FLUSH_CNT2) {
756 brcmf_commonring_write_complete(commonring);
757 count = 0;
758 }
759 }
760 if (count)
761 brcmf_commonring_write_complete(commonring);
762 brcmf_commonring_unlock(commonring);
763}
764
765
766static void brcmf_msgbuf_txflow_worker(struct work_struct *worker)
767{
768 struct brcmf_msgbuf *msgbuf;
769 u32 flowid;
770
771 msgbuf = container_of(worker, struct brcmf_msgbuf, txflow_work);
772 for_each_set_bit(flowid, msgbuf->flow_map, msgbuf->nrof_flowrings) {
773 clear_bit(flowid, msgbuf->flow_map);
774 brcmf_msgbuf_txflow(msgbuf, flowid);
775 }
776}
777
778
5ef1e604
HM		 779static int brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf *msgbuf, u32 flowid,
780 bool force)
9a1bb602 781{
5ef1e604
HM		 782 struct brcmf_commonring *commonring;
783
9a1bb602 784 set_bit(flowid, msgbuf->flow_map);
5ef1e604
HM		 785 commonring = msgbuf->flowrings[flowid];
786 if ((force) || (atomic_read(&commonring->outstanding_tx) <
787 BRCMF_MSGBUF_DELAY_TXWORKER_THRS))
788 queue_work(msgbuf->txflow_wq, &msgbuf->txflow_work);
9a1bb602
HM		 789
790 return 0;
791}
792
793
794static int brcmf_msgbuf_txdata(struct brcmf_pub *drvr, int ifidx,
795 u8 offset, struct sk_buff *skb)
796{
797 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
798 struct brcmf_flowring *flow = msgbuf->flow;
799 struct ethhdr *eh = (struct ethhdr *)(skb->data);
800 u32 flowid;
801
802 flowid = brcmf_flowring_lookup(flow, eh->h_dest, skb->priority, ifidx);
803 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
804 flowid = brcmf_msgbuf_flowring_create(msgbuf, ifidx, skb);
805 if (flowid == BRCMF_FLOWRING_INVALID_ID)
806 return -ENOMEM;
807 }
808 brcmf_flowring_enqueue(flow, flowid, skb);
5ef1e604 809 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, false);
9a1bb602
HM		 810
811 return 0;
812}
813
814
815static void
816brcmf_msgbuf_configure_addr_mode(struct brcmf_pub *drvr, int ifidx,
817 enum proto_addr_mode addr_mode)
818{
819 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
820
821 brcmf_flowring_configure_addr_mode(msgbuf->flow, ifidx, addr_mode);
822}
823
824
825static void
826brcmf_msgbuf_delete_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
827{
828 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
829
830 brcmf_flowring_delete_peer(msgbuf->flow, ifidx, peer);
831}
832
833
70b7d94b
HM		 834static void
835brcmf_msgbuf_add_tdls_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
836{
837 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
838
839 brcmf_flowring_add_tdls_peer(msgbuf->flow, ifidx, peer);
840}
841
842
9a1bb602
HM		 843static void
844brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf *msgbuf, void *buf)
845{
846 struct msgbuf_ioctl_resp_hdr *ioctl_resp;
847
848 ioctl_resp = (struct msgbuf_ioctl_resp_hdr *)buf;
849
ff0a6230
HM		 850 msgbuf->ioctl_resp_status =
851 (s16)le16_to_cpu(ioctl_resp->compl_hdr.status);
9a1bb602
HM		 852 msgbuf->ioctl_resp_ret_len = le16_to_cpu(ioctl_resp->resp_len);
853 msgbuf->ioctl_resp_pktid = le32_to_cpu(ioctl_resp->msg.request_id);
854
855 brcmf_msgbuf_ioctl_resp_wake(msgbuf);
856
857 if (msgbuf->cur_ioctlrespbuf)
858 msgbuf->cur_ioctlrespbuf--;
859 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
860}
861
862
863static void
864brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf *msgbuf, void *buf)
865{
5ef1e604 866 struct brcmf_commonring *commonring;
9a1bb602
HM		 867 struct msgbuf_tx_status *tx_status;
868 u32 idx;
869 struct sk_buff *skb;
870 u16 flowid;
871
872 tx_status = (struct msgbuf_tx_status *)buf;
873 idx = le32_to_cpu(tx_status->msg.request_id);
874 flowid = le16_to_cpu(tx_status->compl_hdr.flow_ring_id);
875 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
876 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
877 msgbuf->tx_pktids, idx);
878 if (!skb) {
879 brcmf_err("Invalid packet id idx recv'd %d\n", idx);
880 return;
881 }
882
883 set_bit(flowid, msgbuf->txstatus_done_map);
5ef1e604
HM		 884 commonring = msgbuf->flowrings[flowid];
885 atomic_dec(&commonring->outstanding_tx);
9a1bb602
HM		 886
887 brcmf_txfinalize(msgbuf->drvr, skb, tx_status->msg.ifidx, true);
888}
889
890
891static u32 brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf *msgbuf, u32 count)
892{
893 struct brcmf_commonring *commonring;
894 void *ret_ptr;
895 struct sk_buff *skb;
896 u16 alloced;
897 u32 pktlen;
898 dma_addr_t physaddr;
899 struct msgbuf_rx_bufpost *rx_bufpost;
83297aaa 900 u64 address;
9a1bb602
HM		 901 u32 pktid;
902 u32 i;
903
904 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
905 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
906 count,
907 &alloced);
908 if (!ret_ptr) {
d2e2472c 909 brcmf_dbg(MSGBUF, "Failed to reserve space in commonring\n");
9a1bb602
HM		 910 return 0;
911 }
912
913 for (i = 0; i < alloced; i++) {
914 rx_bufpost = (struct msgbuf_rx_bufpost *)ret_ptr;
915 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
916
917 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
918
919 if (skb == NULL) {
920 brcmf_err("Failed to alloc SKB\n");
921 brcmf_commonring_write_cancel(commonring, alloced - i);
922 break;
923 }
924
925 pktlen = skb->len;
926 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
927 msgbuf->rx_pktids, skb, 0,
928 &physaddr, &pktid)) {
929 dev_kfree_skb_any(skb);
930 brcmf_err("No PKTID available !!\n");
931 brcmf_commonring_write_cancel(commonring, alloced - i);
932 break;
933 }
934
935 if (msgbuf->rx_metadata_offset) {
83297aaa 936 address = (u64)physaddr;
9a1bb602
HM		 937 rx_bufpost->metadata_buf_len =
938 cpu_to_le16(msgbuf->rx_metadata_offset);
939 rx_bufpost->metadata_buf_addr.high_addr =
940 cpu_to_le32(address >> 32);
941 rx_bufpost->metadata_buf_addr.low_addr =
942 cpu_to_le32(address & 0xffffffff);
943
944 skb_pull(skb, msgbuf->rx_metadata_offset);
945 pktlen = skb->len;
946 physaddr += msgbuf->rx_metadata_offset;
947 }
948 rx_bufpost->msg.msgtype = MSGBUF_TYPE_RXBUF_POST;
949 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
950
83297aaa 951 address = (u64)physaddr;
9a1bb602
HM		 952 rx_bufpost->data_buf_len = cpu_to_le16((u16)pktlen);
953 rx_bufpost->data_buf_addr.high_addr =
954 cpu_to_le32(address >> 32);
955 rx_bufpost->data_buf_addr.low_addr =
956 cpu_to_le32(address & 0xffffffff);
957
958 ret_ptr += brcmf_commonring_len_item(commonring);
959 }
960
961 if (i)
962 brcmf_commonring_write_complete(commonring);
963
964 return i;
965}
966
967
968static void
969brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf *msgbuf)
970{
971 u32 fillbufs;
972 u32 retcount;
973
974 fillbufs = msgbuf->max_rxbufpost - msgbuf->rxbufpost;
975
976 while (fillbufs) {
977 retcount = brcmf_msgbuf_rxbuf_data_post(msgbuf, fillbufs);
978 if (!retcount)
979 break;
980 msgbuf->rxbufpost += retcount;
981 fillbufs -= retcount;
982 }
983}
984
985
986static void
987brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf *msgbuf, u16 rxcnt)
988{
989 msgbuf->rxbufpost -= rxcnt;
990 if (msgbuf->rxbufpost <= (msgbuf->max_rxbufpost -
991 BRCMF_MSGBUF_RXBUFPOST_THRESHOLD))
992 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
993}
994
995
996static u32
997brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf *msgbuf, bool event_buf,
998 u32 count)
999{
1000 struct brcmf_commonring *commonring;
1001 void *ret_ptr;
1002 struct sk_buff *skb;
1003 u16 alloced;
1004 u32 pktlen;
1005 dma_addr_t physaddr;
1006 struct msgbuf_rx_ioctl_resp_or_event *rx_bufpost;
83297aaa 1007 u64 address;
9a1bb602
HM		 1008 u32 pktid;
1009 u32 i;
1010
1011 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1012 brcmf_commonring_lock(commonring);
1013 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
1014 count,
1015 &alloced);
1016 if (!ret_ptr) {
1017 brcmf_err("Failed to reserve space in commonring\n");
1018 brcmf_commonring_unlock(commonring);
1019 return 0;
1020 }
1021
1022 for (i = 0; i < alloced; i++) {
1023 rx_bufpost = (struct msgbuf_rx_ioctl_resp_or_event *)ret_ptr;
1024 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
1025
1026 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
1027
1028 if (skb == NULL) {
1029 brcmf_err("Failed to alloc SKB\n");
1030 brcmf_commonring_write_cancel(commonring, alloced - i);
1031 break;
1032 }
1033
1034 pktlen = skb->len;
1035 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
1036 msgbuf->rx_pktids, skb, 0,
1037 &physaddr, &pktid)) {
1038 dev_kfree_skb_any(skb);
1039 brcmf_err("No PKTID available !!\n");
1040 brcmf_commonring_write_cancel(commonring, alloced - i);
1041 break;
1042 }
1043 if (event_buf)
1044 rx_bufpost->msg.msgtype = MSGBUF_TYPE_EVENT_BUF_POST;
1045 else
1046 rx_bufpost->msg.msgtype =
1047 MSGBUF_TYPE_IOCTLRESP_BUF_POST;
1048 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
1049
83297aaa 1050 address = (u64)physaddr;
9a1bb602
HM		 1051 rx_bufpost->host_buf_len = cpu_to_le16((u16)pktlen);
1052 rx_bufpost->host_buf_addr.high_addr =
1053 cpu_to_le32(address >> 32);
1054 rx_bufpost->host_buf_addr.low_addr =
1055 cpu_to_le32(address & 0xffffffff);
1056
1057 ret_ptr += brcmf_commonring_len_item(commonring);
1058 }
1059
1060 if (i)
1061 brcmf_commonring_write_complete(commonring);
1062
1063 brcmf_commonring_unlock(commonring);
1064
1065 return i;
1066}
1067
1068
1069static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf)
1070{
1071 u32 count;
1072
1073 count = msgbuf->max_ioctlrespbuf - msgbuf->cur_ioctlrespbuf;
1074 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, false, count);
1075 msgbuf->cur_ioctlrespbuf += count;
1076}
1077
1078
1079static void brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf *msgbuf)
1080{
1081 u32 count;
1082
1083 count = msgbuf->max_eventbuf - msgbuf->cur_eventbuf;
1084 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, true, count);
1085 msgbuf->cur_eventbuf += count;
1086}
1087
1088
1089static void
1090brcmf_msgbuf_rx_skb(struct brcmf_msgbuf *msgbuf, struct sk_buff *skb,
1091 u8 ifidx)
1092{
1093 struct brcmf_if *ifp;
1094
94a61208
HM		 1095 /* The ifidx is the idx to map to matching netdev/ifp. When receiving
1096 * events this is easy because it contains the bssidx which maps
1097 * 1-on-1 to the netdev/ifp. But for data frames the ifidx is rcvd.
1098 * bssidx 1 is used for p2p0 and no data can be received or
1099 * transmitted on it. Therefor bssidx is ifidx + 1 if ifidx > 0
1100 */
1101 if (ifidx)
1102 (ifidx)++;
9a1bb602
HM		 1103 ifp = msgbuf->drvr->iflist[ifidx];
1104 if (!ifp || !ifp->ndev) {
94a61208 1105 brcmf_err("Received pkt for invalid ifidx %d\n", ifidx);
9a1bb602
HM		 1106 brcmu_pkt_buf_free_skb(skb);
1107 return;
1108 }
1109 brcmf_netif_rx(ifp, skb);
1110}
1111
1112
1113static void brcmf_msgbuf_process_event(struct brcmf_msgbuf *msgbuf, void *buf)
1114{
1115 struct msgbuf_rx_event *event;
1116 u32 idx;
1117 u16 buflen;
1118 struct sk_buff *skb;
1119
1120 event = (struct msgbuf_rx_event *)buf;
1121 idx = le32_to_cpu(event->msg.request_id);
1122 buflen = le16_to_cpu(event->event_data_len);
1123
1124 if (msgbuf->cur_eventbuf)
1125 msgbuf->cur_eventbuf--;
1126 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1127
1128 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1129 msgbuf->rx_pktids, idx);
1130 if (!skb)
1131 return;
1132
1133 if (msgbuf->rx_dataoffset)
1134 skb_pull(skb, msgbuf->rx_dataoffset);
1135
1136 skb_trim(skb, buflen);
1137
1138 brcmf_msgbuf_rx_skb(msgbuf, skb, event->msg.ifidx);
1139}
1140
1141
1142static void
1143brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf *msgbuf, void *buf)
1144{
1145 struct msgbuf_rx_complete *rx_complete;
1146 struct sk_buff *skb;
1147 u16 data_offset;
1148 u16 buflen;
1149 u32 idx;
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
1158 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1159 msgbuf->rx_pktids, idx);
1160
1161 if (data_offset)
1162 skb_pull(skb, data_offset);
1163 else if (msgbuf->rx_dataoffset)
1164 skb_pull(skb, msgbuf->rx_dataoffset);
1165
1166 skb_trim(skb, buflen);
1167
1168 brcmf_msgbuf_rx_skb(msgbuf, skb, rx_complete->msg.ifidx);
1169}
1170
1171
1172static void
1173brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf *msgbuf,
1174 void *buf)
1175{
1176 struct msgbuf_flowring_create_resp *flowring_create_resp;
1177 u16 status;
1178 u16 flowid;
1179
1180 flowring_create_resp = (struct msgbuf_flowring_create_resp *)buf;
1181
1182 flowid = le16_to_cpu(flowring_create_resp->compl_hdr.flow_ring_id);
1183 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
1184 status = le16_to_cpu(flowring_create_resp->compl_hdr.status);
1185
1186 if (status) {
1187 brcmf_err("Flowring creation failed, code %d\n", status);
1188 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1189 return;
1190 }
1191 brcmf_dbg(MSGBUF, "Flowring %d Create response status %d\n", flowid,
1192 status);
1193
1194 brcmf_flowring_open(msgbuf->flow, flowid);
1195
5ef1e604 1196 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
9a1bb602
HM		 1197}
1198
1199
1200static void
1201brcmf_msgbuf_process_flow_ring_delete_response(struct brcmf_msgbuf *msgbuf,
1202 void *buf)
1203{
1204 struct msgbuf_flowring_delete_resp *flowring_delete_resp;
1205 u16 status;
1206 u16 flowid;
1207
1208 flowring_delete_resp = (struct msgbuf_flowring_delete_resp *)buf;
1209
1210 flowid = le16_to_cpu(flowring_delete_resp->compl_hdr.flow_ring_id);
1211 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
1212 status = le16_to_cpu(flowring_delete_resp->compl_hdr.status);
1213
1214 if (status) {
1215 brcmf_err("Flowring deletion failed, code %d\n", status);
1216 brcmf_flowring_delete(msgbuf->flow, flowid);
1217 return;
1218 }
1219 brcmf_dbg(MSGBUF, "Flowring %d Delete response status %d\n", flowid,
1220 status);
1221
1222 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1223}
1224
1225
1226static void brcmf_msgbuf_process_msgtype(struct brcmf_msgbuf *msgbuf, void *buf)
1227{
1228 struct msgbuf_common_hdr *msg;
1229
1230 msg = (struct msgbuf_common_hdr *)buf;
1231 switch (msg->msgtype) {
1232 case MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT:
1233 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT\n");
1234 brcmf_msgbuf_process_flow_ring_create_response(msgbuf, buf);
1235 break;
1236 case MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT:
1237 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT\n");
1238 brcmf_msgbuf_process_flow_ring_delete_response(msgbuf, buf);
1239 break;
1240 case MSGBUF_TYPE_IOCTLPTR_REQ_ACK:
1241 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTLPTR_REQ_ACK\n");
1242 break;
1243 case MSGBUF_TYPE_IOCTL_CMPLT:
1244 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTL_CMPLT\n");
1245 brcmf_msgbuf_process_ioctl_complete(msgbuf, buf);
1246 break;
1247 case MSGBUF_TYPE_WL_EVENT:
1248 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_WL_EVENT\n");
1249 brcmf_msgbuf_process_event(msgbuf, buf);
1250 break;
1251 case MSGBUF_TYPE_TX_STATUS:
1252 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_TX_STATUS\n");
1253 brcmf_msgbuf_process_txstatus(msgbuf, buf);
1254 break;
1255 case MSGBUF_TYPE_RX_CMPLT:
1256 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RX_CMPLT\n");
1257 brcmf_msgbuf_process_rx_complete(msgbuf, buf);
1258 break;
1259 default:
1260 brcmf_err("Unsupported msgtype %d\n", msg->msgtype);
1261 break;
1262 }
1263}
1264
1265
1266static void brcmf_msgbuf_process_rx(struct brcmf_msgbuf *msgbuf,
1267 struct brcmf_commonring *commonring)
1268{
1269 void *buf;
1270 u16 count;
1271
1272again:
1273 buf = brcmf_commonring_get_read_ptr(commonring, &count);
1274 if (buf == NULL)
1275 return;
1276
1277 while (count) {
1278 brcmf_msgbuf_process_msgtype(msgbuf,
1279 buf + msgbuf->rx_dataoffset);
1280 buf += brcmf_commonring_len_item(commonring);
1281 count--;
1282 }
1283 brcmf_commonring_read_complete(commonring);
1284
1285 if (commonring->r_ptr == 0)
1286 goto again;
1287}
1288
1289
1290int brcmf_proto_msgbuf_rx_trigger(struct device *dev)
1291{
1292 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1293 struct brcmf_pub *drvr = bus_if->drvr;
1294 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
5ef1e604 1295 struct brcmf_commonring *commonring;
9a1bb602
HM		 1296 void *buf;
1297 u32 flowid;
5ef1e604 1298 int qlen;
9a1bb602
HM		 1299
1300 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1301 brcmf_msgbuf_process_rx(msgbuf, buf);
1302 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1303 brcmf_msgbuf_process_rx(msgbuf, buf);
1304 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1305 brcmf_msgbuf_process_rx(msgbuf, buf);
1306
1307 for_each_set_bit(flowid, msgbuf->txstatus_done_map,
1308 msgbuf->nrof_flowrings) {
1309 clear_bit(flowid, msgbuf->txstatus_done_map);
5ef1e604
HM		 1310 commonring = msgbuf->flowrings[flowid];
1311 qlen = brcmf_flowring_qlen(msgbuf->flow, flowid);
1312 if ((qlen > BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) ||
1313 ((qlen) && (atomic_read(&commonring->outstanding_tx) <
1314 BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS)))
1315 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
9a1bb602
HM		 1316 }
1317
1318 return 0;
1319}
1320
1321
1322void brcmf_msgbuf_delete_flowring(struct brcmf_pub *drvr, u8 flowid)
1323{
1324 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1325 struct msgbuf_tx_flowring_delete_req *delete;
1326 struct brcmf_commonring *commonring;
1327 void *ret_ptr;
1328 u8 ifidx;
1329 int err;
1330
1331 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1332 brcmf_commonring_lock(commonring);
1333 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
1334 if (!ret_ptr) {
1335 brcmf_err("FW unaware, flowring will be removed !!\n");
1336 brcmf_commonring_unlock(commonring);
1337 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1338 return;
1339 }
1340
1341 delete = (struct msgbuf_tx_flowring_delete_req *)ret_ptr;
1342
1343 ifidx = brcmf_flowring_ifidx_get(msgbuf->flow, flowid);
1344
1345 delete->msg.msgtype = MSGBUF_TYPE_FLOW_RING_DELETE;
1346 delete->msg.ifidx = ifidx;
1347 delete->msg.request_id = 0;
1348
1349 delete->flow_ring_id = cpu_to_le16(flowid +
1350 BRCMF_NROF_H2D_COMMON_MSGRINGS);
1351 delete->reason = 0;
1352
1353 brcmf_dbg(MSGBUF, "Send Flow Delete Req flow ID %d, ifindex %d\n",
1354 flowid, ifidx);
1355
1356 err = brcmf_commonring_write_complete(commonring);
1357 brcmf_commonring_unlock(commonring);
1358 if (err) {
1359 brcmf_err("Failed to submit RING_DELETE, flowring will be removed\n");
1360 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1361 }
1362}
1363
1364
1365int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
1366{
1367 struct brcmf_bus_msgbuf *if_msgbuf;
1368 struct brcmf_msgbuf *msgbuf;
83297aaa 1369 u64 address;
9a1bb602
HM		 1370 u32 count;
1371
1372 if_msgbuf = drvr->bus_if->msgbuf;
3ba06610 1373 msgbuf = kzalloc(sizeof(*msgbuf), GFP_KERNEL);
9a1bb602
HM		 1374 if (!msgbuf)
1375 goto fail;
1376
1377 msgbuf->txflow_wq = create_singlethread_workqueue("msgbuf_txflow");
1378 if (msgbuf->txflow_wq == NULL) {
1379 brcmf_err("workqueue creation failed\n");
1380 goto fail;
1381 }
1382 INIT_WORK(&msgbuf->txflow_work, brcmf_msgbuf_txflow_worker);
1383 count = BITS_TO_LONGS(if_msgbuf->nrof_flowrings);
333c2aa0 1384 count = count * sizeof(unsigned long);
3ba06610 1385 msgbuf->flow_map = kzalloc(count, GFP_KERNEL);
9a1bb602
HM		 1386 if (!msgbuf->flow_map)
1387 goto fail;
1388
3ba06610 1389 msgbuf->txstatus_done_map = kzalloc(count, GFP_KERNEL);
9a1bb602
HM		 1390 if (!msgbuf->txstatus_done_map)
1391 goto fail;
1392
1393 msgbuf->drvr = drvr;
1394 msgbuf->ioctbuf = dma_alloc_coherent(drvr->bus_if->dev,
1395 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1396 &msgbuf->ioctbuf_handle,
3ba06610 1397 GFP_KERNEL);
9a1bb602
HM		 1398 if (!msgbuf->ioctbuf)
1399 goto fail;
83297aaa 1400 address = (u64)msgbuf->ioctbuf_handle;
9a1bb602
HM		 1401 msgbuf->ioctbuf_phys_hi = address >> 32;
1402 msgbuf->ioctbuf_phys_lo = address & 0xffffffff;
1403
1404 drvr->proto->hdrpull = brcmf_msgbuf_hdrpull;
1405 drvr->proto->query_dcmd = brcmf_msgbuf_query_dcmd;
1406 drvr->proto->set_dcmd = brcmf_msgbuf_set_dcmd;
1407 drvr->proto->txdata = brcmf_msgbuf_txdata;
1408 drvr->proto->configure_addr_mode = brcmf_msgbuf_configure_addr_mode;
1409 drvr->proto->delete_peer = brcmf_msgbuf_delete_peer;
70b7d94b 1410 drvr->proto->add_tdls_peer = brcmf_msgbuf_add_tdls_peer;
9a1bb602
HM		 1411 drvr->proto->pd = msgbuf;
1412
1413 init_waitqueue_head(&msgbuf->ioctl_resp_wait);
1414
1415 msgbuf->commonrings =
1416 (struct brcmf_commonring **)if_msgbuf->commonrings;
1417 msgbuf->flowrings = (struct brcmf_commonring **)if_msgbuf->flowrings;
1418 msgbuf->nrof_flowrings = if_msgbuf->nrof_flowrings;
1419 msgbuf->flowring_dma_handle = kzalloc(msgbuf->nrof_flowrings *
3ba06610 1420 sizeof(*msgbuf->flowring_dma_handle), GFP_KERNEL);
2d116b88
AS		 1421 if (!msgbuf->flowring_dma_handle)
1422 goto fail;
9a1bb602
HM		 1423
1424 msgbuf->rx_dataoffset = if_msgbuf->rx_dataoffset;
1425 msgbuf->max_rxbufpost = if_msgbuf->max_rxbufpost;
1426
1427 msgbuf->max_ioctlrespbuf = BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST;
1428 msgbuf->max_eventbuf = BRCMF_MSGBUF_MAX_EVENTBUF_POST;
1429
1430 msgbuf->tx_pktids = brcmf_msgbuf_init_pktids(NR_TX_PKTIDS,
1431 DMA_TO_DEVICE);
1432 if (!msgbuf->tx_pktids)
1433 goto fail;
1434 msgbuf->rx_pktids = brcmf_msgbuf_init_pktids(NR_RX_PKTIDS,
1435 DMA_FROM_DEVICE);
1436 if (!msgbuf->rx_pktids)
1437 goto fail;
1438
1439 msgbuf->flow = brcmf_flowring_attach(drvr->bus_if->dev,
1440 if_msgbuf->nrof_flowrings);
1441 if (!msgbuf->flow)
1442 goto fail;
1443
1444
1445 brcmf_dbg(MSGBUF, "Feeding buffers, rx data %d, rx event %d, rx ioctl resp %d\n",
1446 msgbuf->max_rxbufpost, msgbuf->max_eventbuf,
1447 msgbuf->max_ioctlrespbuf);
1448 count = 0;
1449 do {
1450 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
1451 if (msgbuf->max_rxbufpost != msgbuf->rxbufpost)
1452 msleep(10);
1453 else
1454 break;
1455 count++;
1456 } while (count < 10);
1457 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1458 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
1459
3ba06610
HM		 1460 INIT_WORK(&msgbuf->flowring_work, brcmf_msgbuf_flowring_worker);
1461 spin_lock_init(&msgbuf->flowring_work_lock);
1462 INIT_LIST_HEAD(&msgbuf->work_queue);
1463
9a1bb602
HM		 1464 return 0;
1465
1466fail:
1467 if (msgbuf) {
1468 kfree(msgbuf->flow_map);
1469 kfree(msgbuf->txstatus_done_map);
1470 brcmf_msgbuf_release_pktids(msgbuf);
2d116b88 1471 kfree(msgbuf->flowring_dma_handle);
9a1bb602
HM		 1472 if (msgbuf->ioctbuf)
1473 dma_free_coherent(drvr->bus_if->dev,
1474 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1475 msgbuf->ioctbuf,
1476 msgbuf->ioctbuf_handle);
1477 kfree(msgbuf);
1478 }
1479 return -ENOMEM;
1480}
1481
1482
1483void brcmf_proto_msgbuf_detach(struct brcmf_pub *drvr)
1484{
1485 struct brcmf_msgbuf *msgbuf;
3ba06610 1486 struct brcmf_msgbuf_work_item *work;
9a1bb602
HM		 1487
1488 brcmf_dbg(TRACE, "Enter\n");
1489 if (drvr->proto->pd) {
1490 msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
3ba06610
HM		 1491 cancel_work_sync(&msgbuf->flowring_work);
1492 while (!list_empty(&msgbuf->work_queue)) {
1493 work = list_first_entry(&msgbuf->work_queue,
1494 struct brcmf_msgbuf_work_item,
1495 queue);
1496 list_del(&work->queue);
1497 kfree(work);
1498 }
9a1bb602
HM		 1499 kfree(msgbuf->flow_map);
1500 kfree(msgbuf->txstatus_done_map);
1501 if (msgbuf->txflow_wq)
1502 destroy_workqueue(msgbuf->txflow_wq);
1503
1504 brcmf_flowring_detach(msgbuf->flow);
1505 dma_free_coherent(drvr->bus_if->dev,
1506 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1507 msgbuf->ioctbuf, msgbuf->ioctbuf_handle);
1508 brcmf_msgbuf_release_pktids(msgbuf);
2d116b88 1509 kfree(msgbuf->flowring_dma_handle);
9a1bb602
HM		 1510 kfree(msgbuf);
1511 drvr->proto->pd = NULL;
1512 }
1513}
Linux kernel - Deliverables
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