1 // SPDX-License-Identifier: ISC
2 /*
3 * Copyright (c) 2005-2011 Atheros Communications Inc.
4 * Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
5 */
6
7 #include <linux/etherdevice.h>
8 #include "htt.h"
9 #include "mac.h"
10 #include "hif.h"
11 #include "txrx.h"
12 #include "debug.h"
13
ath10k_htt_tx_txq_calc_size(size_t count)14 static u8 ath10k_htt_tx_txq_calc_size(size_t count)
15 {
16 int exp;
17 int factor;
18
19 exp = 0;
20 factor = count >> 7;
21
22 while (factor >= 64 && exp < 4) {
23 factor >>= 3;
24 exp++;
25 }
26
27 if (exp == 4)
28 return 0xff;
29
30 if (count > 0)
31 factor = max(1, factor);
32
33 return SM(exp, HTT_TX_Q_STATE_ENTRY_EXP) |
34 SM(factor, HTT_TX_Q_STATE_ENTRY_FACTOR);
35 }
36
__ath10k_htt_tx_txq_recalc(struct ieee80211_hw * hw,struct ieee80211_txq * txq)37 static void __ath10k_htt_tx_txq_recalc(struct ieee80211_hw *hw,
38 struct ieee80211_txq *txq)
39 {
40 struct ath10k *ar = hw->priv;
41 struct ath10k_sta *arsta;
42 struct ath10k_vif *arvif = (void *)txq->vif->drv_priv;
43 unsigned long frame_cnt;
44 unsigned long byte_cnt;
45 int idx;
46 u32 bit;
47 u16 peer_id;
48 u8 tid;
49 u8 count;
50
51 lockdep_assert_held(&ar->htt.tx_lock);
52
53 if (!ar->htt.tx_q_state.enabled)
54 return;
55
56 if (ar->htt.tx_q_state.mode != HTT_TX_MODE_SWITCH_PUSH_PULL)
57 return;
58
59 if (txq->sta) {
60 arsta = (void *)txq->sta->drv_priv;
61 peer_id = arsta->peer_id;
62 } else {
63 peer_id = arvif->peer_id;
64 }
65
66 tid = txq->tid;
67 bit = BIT(peer_id % 32);
68 idx = peer_id / 32;
69
70 ieee80211_txq_get_depth(txq, &frame_cnt, &byte_cnt);
71 count = ath10k_htt_tx_txq_calc_size(byte_cnt);
72
73 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) ||
74 unlikely(tid >= ar->htt.tx_q_state.num_tids)) {
75 ath10k_warn(ar, "refusing to update txq for peer_id %hu tid %hhu due to out of bounds\n",
76 peer_id, tid);
77 return;
78 }
79
80 ar->htt.tx_q_state.vaddr->count[tid][peer_id] = count;
81 ar->htt.tx_q_state.vaddr->map[tid][idx] &= ~bit;
82 ar->htt.tx_q_state.vaddr->map[tid][idx] |= count ? bit : 0;
83
84 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx txq state update peer_id %hu tid %hhu count %hhu\n",
85 peer_id, tid, count);
86 }
87
__ath10k_htt_tx_txq_sync(struct ath10k * ar)88 static void __ath10k_htt_tx_txq_sync(struct ath10k *ar)
89 {
90 u32 seq;
91 size_t size;
92
93 lockdep_assert_held(&ar->htt.tx_lock);
94
95 if (!ar->htt.tx_q_state.enabled)
96 return;
97
98 if (ar->htt.tx_q_state.mode != HTT_TX_MODE_SWITCH_PUSH_PULL)
99 return;
100
101 seq = le32_to_cpu(ar->htt.tx_q_state.vaddr->seq);
102 seq++;
103 ar->htt.tx_q_state.vaddr->seq = cpu_to_le32(seq);
104
105 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx txq state update commit seq %u\n",
106 seq);
107
108 size = sizeof(*ar->htt.tx_q_state.vaddr);
109 dma_sync_single_for_device(ar->dev,
110 ar->htt.tx_q_state.paddr,
111 size,
112 DMA_TO_DEVICE);
113 }
114
ath10k_htt_tx_txq_recalc(struct ieee80211_hw * hw,struct ieee80211_txq * txq)115 void ath10k_htt_tx_txq_recalc(struct ieee80211_hw *hw,
116 struct ieee80211_txq *txq)
117 {
118 struct ath10k *ar = hw->priv;
119
120 spin_lock_bh(&ar->htt.tx_lock);
121 __ath10k_htt_tx_txq_recalc(hw, txq);
122 spin_unlock_bh(&ar->htt.tx_lock);
123 }
124
ath10k_htt_tx_txq_sync(struct ath10k * ar)125 void ath10k_htt_tx_txq_sync(struct ath10k *ar)
126 {
127 spin_lock_bh(&ar->htt.tx_lock);
128 __ath10k_htt_tx_txq_sync(ar);
129 spin_unlock_bh(&ar->htt.tx_lock);
130 }
131
ath10k_htt_tx_txq_update(struct ieee80211_hw * hw,struct ieee80211_txq * txq)132 void ath10k_htt_tx_txq_update(struct ieee80211_hw *hw,
133 struct ieee80211_txq *txq)
134 {
135 struct ath10k *ar = hw->priv;
136
137 spin_lock_bh(&ar->htt.tx_lock);
138 __ath10k_htt_tx_txq_recalc(hw, txq);
139 __ath10k_htt_tx_txq_sync(ar);
140 spin_unlock_bh(&ar->htt.tx_lock);
141 }
142
ath10k_htt_tx_dec_pending(struct ath10k_htt * htt)143 void ath10k_htt_tx_dec_pending(struct ath10k_htt *htt)
144 {
145 lockdep_assert_held(&htt->tx_lock);
146
147 htt->num_pending_tx--;
148 if (htt->num_pending_tx == htt->max_num_pending_tx - 1)
149 ath10k_mac_tx_unlock(htt->ar, ATH10K_TX_PAUSE_Q_FULL);
150 }
151
ath10k_htt_tx_inc_pending(struct ath10k_htt * htt)152 int ath10k_htt_tx_inc_pending(struct ath10k_htt *htt)
153 {
154 lockdep_assert_held(&htt->tx_lock);
155
156 if (htt->num_pending_tx >= htt->max_num_pending_tx)
157 return -EBUSY;
158
159 htt->num_pending_tx++;
160 if (htt->num_pending_tx == htt->max_num_pending_tx)
161 ath10k_mac_tx_lock(htt->ar, ATH10K_TX_PAUSE_Q_FULL);
162
163 return 0;
164 }
165
ath10k_htt_tx_mgmt_inc_pending(struct ath10k_htt * htt,bool is_mgmt,bool is_presp)166 int ath10k_htt_tx_mgmt_inc_pending(struct ath10k_htt *htt, bool is_mgmt,
167 bool is_presp)
168 {
169 struct ath10k *ar = htt->ar;
170
171 lockdep_assert_held(&htt->tx_lock);
172
173 if (!is_mgmt || !ar->hw_params.max_probe_resp_desc_thres)
174 return 0;
175
176 if (is_presp &&
177 ar->hw_params.max_probe_resp_desc_thres < htt->num_pending_mgmt_tx)
178 return -EBUSY;
179
180 htt->num_pending_mgmt_tx++;
181
182 return 0;
183 }
184
ath10k_htt_tx_mgmt_dec_pending(struct ath10k_htt * htt)185 void ath10k_htt_tx_mgmt_dec_pending(struct ath10k_htt *htt)
186 {
187 lockdep_assert_held(&htt->tx_lock);
188
189 if (!htt->ar->hw_params.max_probe_resp_desc_thres)
190 return;
191
192 htt->num_pending_mgmt_tx--;
193 }
194
ath10k_htt_tx_alloc_msdu_id(struct ath10k_htt * htt,struct sk_buff * skb)195 int ath10k_htt_tx_alloc_msdu_id(struct ath10k_htt *htt, struct sk_buff *skb)
196 {
197 struct ath10k *ar = htt->ar;
198 int ret;
199
200 spin_lock_bh(&htt->tx_lock);
201 ret = idr_alloc(&htt->pending_tx, skb, 0,
202 htt->max_num_pending_tx, GFP_ATOMIC);
203 spin_unlock_bh(&htt->tx_lock);
204
205 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx alloc msdu_id %d\n", ret);
206
207 return ret;
208 }
209
ath10k_htt_tx_free_msdu_id(struct ath10k_htt * htt,u16 msdu_id)210 void ath10k_htt_tx_free_msdu_id(struct ath10k_htt *htt, u16 msdu_id)
211 {
212 struct ath10k *ar = htt->ar;
213
214 lockdep_assert_held(&htt->tx_lock);
215
216 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx free msdu_id %hu\n", msdu_id);
217
218 idr_remove(&htt->pending_tx, msdu_id);
219 }
220
ath10k_htt_tx_free_cont_txbuf_32(struct ath10k_htt * htt)221 static void ath10k_htt_tx_free_cont_txbuf_32(struct ath10k_htt *htt)
222 {
223 struct ath10k *ar = htt->ar;
224 size_t size;
225
226 if (!htt->txbuf.vaddr_txbuff_32)
227 return;
228
229 size = htt->txbuf.size;
230 dma_free_coherent(ar->dev, size, htt->txbuf.vaddr_txbuff_32,
231 htt->txbuf.paddr);
232 htt->txbuf.vaddr_txbuff_32 = NULL;
233 }
234
ath10k_htt_tx_alloc_cont_txbuf_32(struct ath10k_htt * htt)235 static int ath10k_htt_tx_alloc_cont_txbuf_32(struct ath10k_htt *htt)
236 {
237 struct ath10k *ar = htt->ar;
238 size_t size;
239
240 size = htt->max_num_pending_tx *
241 sizeof(struct ath10k_htt_txbuf_32);
242
243 htt->txbuf.vaddr_txbuff_32 = dma_alloc_coherent(ar->dev, size,
244 &htt->txbuf.paddr,
245 GFP_KERNEL);
246 if (!htt->txbuf.vaddr_txbuff_32)
247 return -ENOMEM;
248
249 htt->txbuf.size = size;
250
251 return 0;
252 }
253
ath10k_htt_tx_free_cont_txbuf_64(struct ath10k_htt * htt)254 static void ath10k_htt_tx_free_cont_txbuf_64(struct ath10k_htt *htt)
255 {
256 struct ath10k *ar = htt->ar;
257 size_t size;
258
259 if (!htt->txbuf.vaddr_txbuff_64)
260 return;
261
262 size = htt->txbuf.size;
263 dma_free_coherent(ar->dev, size, htt->txbuf.vaddr_txbuff_64,
264 htt->txbuf.paddr);
265 htt->txbuf.vaddr_txbuff_64 = NULL;
266 }
267
ath10k_htt_tx_alloc_cont_txbuf_64(struct ath10k_htt * htt)268 static int ath10k_htt_tx_alloc_cont_txbuf_64(struct ath10k_htt *htt)
269 {
270 struct ath10k *ar = htt->ar;
271 size_t size;
272
273 size = htt->max_num_pending_tx *
274 sizeof(struct ath10k_htt_txbuf_64);
275
276 htt->txbuf.vaddr_txbuff_64 = dma_alloc_coherent(ar->dev, size,
277 &htt->txbuf.paddr,
278 GFP_KERNEL);
279 if (!htt->txbuf.vaddr_txbuff_64)
280 return -ENOMEM;
281
282 htt->txbuf.size = size;
283
284 return 0;
285 }
286
ath10k_htt_tx_free_cont_frag_desc_32(struct ath10k_htt * htt)287 static void ath10k_htt_tx_free_cont_frag_desc_32(struct ath10k_htt *htt)
288 {
289 size_t size;
290
291 if (!htt->frag_desc.vaddr_desc_32)
292 return;
293
294 size = htt->max_num_pending_tx *
295 sizeof(struct htt_msdu_ext_desc);
296
297 dma_free_coherent(htt->ar->dev,
298 size,
299 htt->frag_desc.vaddr_desc_32,
300 htt->frag_desc.paddr);
301
302 htt->frag_desc.vaddr_desc_32 = NULL;
303 }
304
ath10k_htt_tx_alloc_cont_frag_desc_32(struct ath10k_htt * htt)305 static int ath10k_htt_tx_alloc_cont_frag_desc_32(struct ath10k_htt *htt)
306 {
307 struct ath10k *ar = htt->ar;
308 size_t size;
309
310 if (!ar->hw_params.continuous_frag_desc)
311 return 0;
312
313 size = htt->max_num_pending_tx *
314 sizeof(struct htt_msdu_ext_desc);
315 htt->frag_desc.vaddr_desc_32 = dma_alloc_coherent(ar->dev, size,
316 &htt->frag_desc.paddr,
317 GFP_KERNEL);
318 if (!htt->frag_desc.vaddr_desc_32) {
319 ath10k_err(ar, "failed to alloc fragment desc memory\n");
320 return -ENOMEM;
321 }
322 htt->frag_desc.size = size;
323
324 return 0;
325 }
326
ath10k_htt_tx_free_cont_frag_desc_64(struct ath10k_htt * htt)327 static void ath10k_htt_tx_free_cont_frag_desc_64(struct ath10k_htt *htt)
328 {
329 size_t size;
330
331 if (!htt->frag_desc.vaddr_desc_64)
332 return;
333
334 size = htt->max_num_pending_tx *
335 sizeof(struct htt_msdu_ext_desc_64);
336
337 dma_free_coherent(htt->ar->dev,
338 size,
339 htt->frag_desc.vaddr_desc_64,
340 htt->frag_desc.paddr);
341
342 htt->frag_desc.vaddr_desc_64 = NULL;
343 }
344
ath10k_htt_tx_alloc_cont_frag_desc_64(struct ath10k_htt * htt)345 static int ath10k_htt_tx_alloc_cont_frag_desc_64(struct ath10k_htt *htt)
346 {
347 struct ath10k *ar = htt->ar;
348 size_t size;
349
350 if (!ar->hw_params.continuous_frag_desc)
351 return 0;
352
353 size = htt->max_num_pending_tx *
354 sizeof(struct htt_msdu_ext_desc_64);
355
356 htt->frag_desc.vaddr_desc_64 = dma_alloc_coherent(ar->dev, size,
357 &htt->frag_desc.paddr,
358 GFP_KERNEL);
359 if (!htt->frag_desc.vaddr_desc_64) {
360 ath10k_err(ar, "failed to alloc fragment desc memory\n");
361 return -ENOMEM;
362 }
363 htt->frag_desc.size = size;
364
365 return 0;
366 }
367
ath10k_htt_tx_free_txq(struct ath10k_htt * htt)368 static void ath10k_htt_tx_free_txq(struct ath10k_htt *htt)
369 {
370 struct ath10k *ar = htt->ar;
371 size_t size;
372
373 if (!test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL,
374 ar->running_fw->fw_file.fw_features))
375 return;
376
377 size = sizeof(*htt->tx_q_state.vaddr);
378
379 dma_unmap_single(ar->dev, htt->tx_q_state.paddr, size, DMA_TO_DEVICE);
380 kfree(htt->tx_q_state.vaddr);
381 }
382
ath10k_htt_tx_alloc_txq(struct ath10k_htt * htt)383 static int ath10k_htt_tx_alloc_txq(struct ath10k_htt *htt)
384 {
385 struct ath10k *ar = htt->ar;
386 size_t size;
387 int ret;
388
389 if (!test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL,
390 ar->running_fw->fw_file.fw_features))
391 return 0;
392
393 htt->tx_q_state.num_peers = HTT_TX_Q_STATE_NUM_PEERS;
394 htt->tx_q_state.num_tids = HTT_TX_Q_STATE_NUM_TIDS;
395 htt->tx_q_state.type = HTT_Q_DEPTH_TYPE_BYTES;
396
397 size = sizeof(*htt->tx_q_state.vaddr);
398 htt->tx_q_state.vaddr = kzalloc(size, GFP_KERNEL);
399 if (!htt->tx_q_state.vaddr)
400 return -ENOMEM;
401
402 htt->tx_q_state.paddr = dma_map_single(ar->dev, htt->tx_q_state.vaddr,
403 size, DMA_TO_DEVICE);
404 ret = dma_mapping_error(ar->dev, htt->tx_q_state.paddr);
405 if (ret) {
406 ath10k_warn(ar, "failed to dma map tx_q_state: %d\n", ret);
407 kfree(htt->tx_q_state.vaddr);
408 return -EIO;
409 }
410
411 return 0;
412 }
413
ath10k_htt_tx_free_txdone_fifo(struct ath10k_htt * htt)414 static void ath10k_htt_tx_free_txdone_fifo(struct ath10k_htt *htt)
415 {
416 WARN_ON(!kfifo_is_empty(&htt->txdone_fifo));
417 kfifo_free(&htt->txdone_fifo);
418 }
419
ath10k_htt_tx_alloc_txdone_fifo(struct ath10k_htt * htt)420 static int ath10k_htt_tx_alloc_txdone_fifo(struct ath10k_htt *htt)
421 {
422 int ret;
423 size_t size;
424
425 size = roundup_pow_of_two(htt->max_num_pending_tx);
426 ret = kfifo_alloc(&htt->txdone_fifo, size, GFP_KERNEL);
427 return ret;
428 }
429
ath10k_htt_tx_alloc_buf(struct ath10k_htt * htt)430 static int ath10k_htt_tx_alloc_buf(struct ath10k_htt *htt)
431 {
432 struct ath10k *ar = htt->ar;
433 int ret;
434
435 ret = ath10k_htt_alloc_txbuff(htt);
436 if (ret) {
437 ath10k_err(ar, "failed to alloc cont tx buffer: %d\n", ret);
438 return ret;
439 }
440
441 ret = ath10k_htt_alloc_frag_desc(htt);
442 if (ret) {
443 ath10k_err(ar, "failed to alloc cont frag desc: %d\n", ret);
444 goto free_txbuf;
445 }
446
447 ret = ath10k_htt_tx_alloc_txq(htt);
448 if (ret) {
449 ath10k_err(ar, "failed to alloc txq: %d\n", ret);
450 goto free_frag_desc;
451 }
452
453 ret = ath10k_htt_tx_alloc_txdone_fifo(htt);
454 if (ret) {
455 ath10k_err(ar, "failed to alloc txdone fifo: %d\n", ret);
456 goto free_txq;
457 }
458
459 return 0;
460
461 free_txq:
462 ath10k_htt_tx_free_txq(htt);
463
464 free_frag_desc:
465 ath10k_htt_free_frag_desc(htt);
466
467 free_txbuf:
468 ath10k_htt_free_txbuff(htt);
469
470 return ret;
471 }
472
ath10k_htt_tx_start(struct ath10k_htt * htt)473 int ath10k_htt_tx_start(struct ath10k_htt *htt)
474 {
475 struct ath10k *ar = htt->ar;
476 int ret;
477
478 ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt tx max num pending tx %d\n",
479 htt->max_num_pending_tx);
480
481 spin_lock_init(&htt->tx_lock);
482 idr_init(&htt->pending_tx);
483
484 if (htt->tx_mem_allocated)
485 return 0;
486
487 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
488 return 0;
489
490 ret = ath10k_htt_tx_alloc_buf(htt);
491 if (ret)
492 goto free_idr_pending_tx;
493
494 htt->tx_mem_allocated = true;
495
496 return 0;
497
498 free_idr_pending_tx:
499 idr_destroy(&htt->pending_tx);
500
501 return ret;
502 }
503
ath10k_htt_tx_clean_up_pending(int msdu_id,void * skb,void * ctx)504 static int ath10k_htt_tx_clean_up_pending(int msdu_id, void *skb, void *ctx)
505 {
506 struct ath10k *ar = ctx;
507 struct ath10k_htt *htt = &ar->htt;
508 struct htt_tx_done tx_done = {0};
509
510 ath10k_dbg(ar, ATH10K_DBG_HTT, "force cleanup msdu_id %hu\n", msdu_id);
511
512 tx_done.msdu_id = msdu_id;
513 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
514
515 ath10k_txrx_tx_unref(htt, &tx_done);
516
517 return 0;
518 }
519
ath10k_htt_tx_destroy(struct ath10k_htt * htt)520 void ath10k_htt_tx_destroy(struct ath10k_htt *htt)
521 {
522 if (!htt->tx_mem_allocated)
523 return;
524
525 ath10k_htt_free_txbuff(htt);
526 ath10k_htt_tx_free_txq(htt);
527 ath10k_htt_free_frag_desc(htt);
528 ath10k_htt_tx_free_txdone_fifo(htt);
529 htt->tx_mem_allocated = false;
530 }
531
ath10k_htt_tx_stop(struct ath10k_htt * htt)532 void ath10k_htt_tx_stop(struct ath10k_htt *htt)
533 {
534 idr_for_each(&htt->pending_tx, ath10k_htt_tx_clean_up_pending, htt->ar);
535 idr_destroy(&htt->pending_tx);
536 }
537
ath10k_htt_tx_free(struct ath10k_htt * htt)538 void ath10k_htt_tx_free(struct ath10k_htt *htt)
539 {
540 ath10k_htt_tx_stop(htt);
541 ath10k_htt_tx_destroy(htt);
542 }
543
ath10k_htt_htc_tx_complete(struct ath10k * ar,struct sk_buff * skb)544 void ath10k_htt_htc_tx_complete(struct ath10k *ar, struct sk_buff *skb)
545 {
546 dev_kfree_skb_any(skb);
547 }
548
ath10k_htt_hif_tx_complete(struct ath10k * ar,struct sk_buff * skb)549 void ath10k_htt_hif_tx_complete(struct ath10k *ar, struct sk_buff *skb)
550 {
551 dev_kfree_skb_any(skb);
552 }
553 EXPORT_SYMBOL(ath10k_htt_hif_tx_complete);
554
ath10k_htt_h2t_ver_req_msg(struct ath10k_htt * htt)555 int ath10k_htt_h2t_ver_req_msg(struct ath10k_htt *htt)
556 {
557 struct ath10k *ar = htt->ar;
558 struct sk_buff *skb;
559 struct htt_cmd *cmd;
560 int len = 0;
561 int ret;
562
563 len += sizeof(cmd->hdr);
564 len += sizeof(cmd->ver_req);
565
566 skb = ath10k_htc_alloc_skb(ar, len);
567 if (!skb)
568 return -ENOMEM;
569
570 skb_put(skb, len);
571 cmd = (struct htt_cmd *)skb->data;
572 cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_VERSION_REQ;
573
574 ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb);
575 if (ret) {
576 dev_kfree_skb_any(skb);
577 return ret;
578 }
579
580 return 0;
581 }
582
ath10k_htt_h2t_stats_req(struct ath10k_htt * htt,u32 mask,u32 reset_mask,u64 cookie)583 int ath10k_htt_h2t_stats_req(struct ath10k_htt *htt, u32 mask, u32 reset_mask,
584 u64 cookie)
585 {
586 struct ath10k *ar = htt->ar;
587 struct htt_stats_req *req;
588 struct sk_buff *skb;
589 struct htt_cmd *cmd;
590 int len = 0, ret;
591
592 len += sizeof(cmd->hdr);
593 len += sizeof(cmd->stats_req);
594
595 skb = ath10k_htc_alloc_skb(ar, len);
596 if (!skb)
597 return -ENOMEM;
598
599 skb_put(skb, len);
600 cmd = (struct htt_cmd *)skb->data;
601 cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_STATS_REQ;
602
603 req = &cmd->stats_req;
604
605 memset(req, 0, sizeof(*req));
606
607 /* currently we support only max 24 bit masks so no need to worry
608 * about endian support
609 */
610 memcpy(req->upload_types, &mask, 3);
611 memcpy(req->reset_types, &reset_mask, 3);
612 req->stat_type = HTT_STATS_REQ_CFG_STAT_TYPE_INVALID;
613 req->cookie_lsb = cpu_to_le32(cookie & 0xffffffff);
614 req->cookie_msb = cpu_to_le32((cookie & 0xffffffff00000000ULL) >> 32);
615
616 ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb);
617 if (ret) {
618 ath10k_warn(ar, "failed to send htt type stats request: %d",
619 ret);
620 dev_kfree_skb_any(skb);
621 return ret;
622 }
623
624 return 0;
625 }
626
ath10k_htt_send_frag_desc_bank_cfg_32(struct ath10k_htt * htt)627 static int ath10k_htt_send_frag_desc_bank_cfg_32(struct ath10k_htt *htt)
628 {
629 struct ath10k *ar = htt->ar;
630 struct sk_buff *skb;
631 struct htt_cmd *cmd;
632 struct htt_frag_desc_bank_cfg32 *cfg;
633 int ret, size;
634 u8 info;
635
636 if (!ar->hw_params.continuous_frag_desc)
637 return 0;
638
639 if (!htt->frag_desc.paddr) {
640 ath10k_warn(ar, "invalid frag desc memory\n");
641 return -EINVAL;
642 }
643
644 size = sizeof(cmd->hdr) + sizeof(cmd->frag_desc_bank_cfg32);
645 skb = ath10k_htc_alloc_skb(ar, size);
646 if (!skb)
647 return -ENOMEM;
648
649 skb_put(skb, size);
650 cmd = (struct htt_cmd *)skb->data;
651 cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_FRAG_DESC_BANK_CFG;
652
653 info = 0;
654 info |= SM(htt->tx_q_state.type,
655 HTT_FRAG_DESC_BANK_CFG_INFO_Q_STATE_DEPTH_TYPE);
656
657 if (test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL,
658 ar->running_fw->fw_file.fw_features))
659 info |= HTT_FRAG_DESC_BANK_CFG_INFO_Q_STATE_VALID;
660
661 cfg = &cmd->frag_desc_bank_cfg32;
662 cfg->info = info;
663 cfg->num_banks = 1;
664 cfg->desc_size = sizeof(struct htt_msdu_ext_desc);
665 cfg->bank_base_addrs[0] = __cpu_to_le32(htt->frag_desc.paddr);
666 cfg->bank_id[0].bank_min_id = 0;
667 cfg->bank_id[0].bank_max_id = __cpu_to_le16(htt->max_num_pending_tx -
668 1);
669
670 cfg->q_state.paddr = cpu_to_le32(htt->tx_q_state.paddr);
671 cfg->q_state.num_peers = cpu_to_le16(htt->tx_q_state.num_peers);
672 cfg->q_state.num_tids = cpu_to_le16(htt->tx_q_state.num_tids);
673 cfg->q_state.record_size = HTT_TX_Q_STATE_ENTRY_SIZE;
674 cfg->q_state.record_multiplier = HTT_TX_Q_STATE_ENTRY_MULTIPLIER;
675
676 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt frag desc bank cmd\n");
677
678 ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb);
679 if (ret) {
680 ath10k_warn(ar, "failed to send frag desc bank cfg request: %d\n",
681 ret);
682 dev_kfree_skb_any(skb);
683 return ret;
684 }
685
686 return 0;
687 }
688
ath10k_htt_send_frag_desc_bank_cfg_64(struct ath10k_htt * htt)689 static int ath10k_htt_send_frag_desc_bank_cfg_64(struct ath10k_htt *htt)
690 {
691 struct ath10k *ar = htt->ar;
692 struct sk_buff *skb;
693 struct htt_cmd *cmd;
694 struct htt_frag_desc_bank_cfg64 *cfg;
695 int ret, size;
696 u8 info;
697
698 if (!ar->hw_params.continuous_frag_desc)
699 return 0;
700
701 if (!htt->frag_desc.paddr) {
702 ath10k_warn(ar, "invalid frag desc memory\n");
703 return -EINVAL;
704 }
705
706 size = sizeof(cmd->hdr) + sizeof(cmd->frag_desc_bank_cfg64);
707 skb = ath10k_htc_alloc_skb(ar, size);
708 if (!skb)
709 return -ENOMEM;
710
711 skb_put(skb, size);
712 cmd = (struct htt_cmd *)skb->data;
713 cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_FRAG_DESC_BANK_CFG;
714
715 info = 0;
716 info |= SM(htt->tx_q_state.type,
717 HTT_FRAG_DESC_BANK_CFG_INFO_Q_STATE_DEPTH_TYPE);
718
719 if (test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL,
720 ar->running_fw->fw_file.fw_features))
721 info |= HTT_FRAG_DESC_BANK_CFG_INFO_Q_STATE_VALID;
722
723 cfg = &cmd->frag_desc_bank_cfg64;
724 cfg->info = info;
725 cfg->num_banks = 1;
726 cfg->desc_size = sizeof(struct htt_msdu_ext_desc_64);
727 cfg->bank_base_addrs[0] = __cpu_to_le64(htt->frag_desc.paddr);
728 cfg->bank_id[0].bank_min_id = 0;
729 cfg->bank_id[0].bank_max_id = __cpu_to_le16(htt->max_num_pending_tx -
730 1);
731
732 cfg->q_state.paddr = cpu_to_le32(htt->tx_q_state.paddr);
733 cfg->q_state.num_peers = cpu_to_le16(htt->tx_q_state.num_peers);
734 cfg->q_state.num_tids = cpu_to_le16(htt->tx_q_state.num_tids);
735 cfg->q_state.record_size = HTT_TX_Q_STATE_ENTRY_SIZE;
736 cfg->q_state.record_multiplier = HTT_TX_Q_STATE_ENTRY_MULTIPLIER;
737
738 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt frag desc bank cmd\n");
739
740 ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb);
741 if (ret) {
742 ath10k_warn(ar, "failed to send frag desc bank cfg request: %d\n",
743 ret);
744 dev_kfree_skb_any(skb);
745 return ret;
746 }
747
748 return 0;
749 }
750
ath10k_htt_fill_rx_desc_offset_32(void * rx_ring)751 static void ath10k_htt_fill_rx_desc_offset_32(void *rx_ring)
752 {
753 struct htt_rx_ring_setup_ring32 *ring =
754 (struct htt_rx_ring_setup_ring32 *)rx_ring;
755
756 #define desc_offset(x) (offsetof(struct htt_rx_desc, x) / 4)
757 ring->mac80211_hdr_offset = __cpu_to_le16(desc_offset(rx_hdr_status));
758 ring->msdu_payload_offset = __cpu_to_le16(desc_offset(msdu_payload));
759 ring->ppdu_start_offset = __cpu_to_le16(desc_offset(ppdu_start));
760 ring->ppdu_end_offset = __cpu_to_le16(desc_offset(ppdu_end));
761 ring->mpdu_start_offset = __cpu_to_le16(desc_offset(mpdu_start));
762 ring->mpdu_end_offset = __cpu_to_le16(desc_offset(mpdu_end));
763 ring->msdu_start_offset = __cpu_to_le16(desc_offset(msdu_start));
764 ring->msdu_end_offset = __cpu_to_le16(desc_offset(msdu_end));
765 ring->rx_attention_offset = __cpu_to_le16(desc_offset(attention));
766 ring->frag_info_offset = __cpu_to_le16(desc_offset(frag_info));
767 #undef desc_offset
768 }
769
ath10k_htt_fill_rx_desc_offset_64(void * rx_ring)770 static void ath10k_htt_fill_rx_desc_offset_64(void *rx_ring)
771 {
772 struct htt_rx_ring_setup_ring64 *ring =
773 (struct htt_rx_ring_setup_ring64 *)rx_ring;
774
775 #define desc_offset(x) (offsetof(struct htt_rx_desc, x) / 4)
776 ring->mac80211_hdr_offset = __cpu_to_le16(desc_offset(rx_hdr_status));
777 ring->msdu_payload_offset = __cpu_to_le16(desc_offset(msdu_payload));
778 ring->ppdu_start_offset = __cpu_to_le16(desc_offset(ppdu_start));
779 ring->ppdu_end_offset = __cpu_to_le16(desc_offset(ppdu_end));
780 ring->mpdu_start_offset = __cpu_to_le16(desc_offset(mpdu_start));
781 ring->mpdu_end_offset = __cpu_to_le16(desc_offset(mpdu_end));
782 ring->msdu_start_offset = __cpu_to_le16(desc_offset(msdu_start));
783 ring->msdu_end_offset = __cpu_to_le16(desc_offset(msdu_end));
784 ring->rx_attention_offset = __cpu_to_le16(desc_offset(attention));
785 ring->frag_info_offset = __cpu_to_le16(desc_offset(frag_info));
786 #undef desc_offset
787 }
788
ath10k_htt_send_rx_ring_cfg_32(struct ath10k_htt * htt)789 static int ath10k_htt_send_rx_ring_cfg_32(struct ath10k_htt *htt)
790 {
791 struct ath10k *ar = htt->ar;
792 struct sk_buff *skb;
793 struct htt_cmd *cmd;
794 struct htt_rx_ring_setup_ring32 *ring;
795 const int num_rx_ring = 1;
796 u16 flags;
797 u32 fw_idx;
798 int len;
799 int ret;
800
801 /*
802 * the HW expects the buffer to be an integral number of 4-byte
803 * "words"
804 */
805 BUILD_BUG_ON(!IS_ALIGNED(HTT_RX_BUF_SIZE, 4));
806 BUILD_BUG_ON((HTT_RX_BUF_SIZE & HTT_MAX_CACHE_LINE_SIZE_MASK) != 0);
807
808 len = sizeof(cmd->hdr) + sizeof(cmd->rx_setup_32.hdr)
809 + (sizeof(*ring) * num_rx_ring);
810 skb = ath10k_htc_alloc_skb(ar, len);
811 if (!skb)
812 return -ENOMEM;
813
814 skb_put(skb, len);
815
816 cmd = (struct htt_cmd *)skb->data;
817 ring = &cmd->rx_setup_32.rings[0];
818
819 cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_RX_RING_CFG;
820 cmd->rx_setup_32.hdr.num_rings = 1;
821
822 /* FIXME: do we need all of this? */
823 flags = 0;
824 flags |= HTT_RX_RING_FLAGS_MAC80211_HDR;
825 flags |= HTT_RX_RING_FLAGS_MSDU_PAYLOAD;
826 flags |= HTT_RX_RING_FLAGS_PPDU_START;
827 flags |= HTT_RX_RING_FLAGS_PPDU_END;
828 flags |= HTT_RX_RING_FLAGS_MPDU_START;
829 flags |= HTT_RX_RING_FLAGS_MPDU_END;
830 flags |= HTT_RX_RING_FLAGS_MSDU_START;
831 flags |= HTT_RX_RING_FLAGS_MSDU_END;
832 flags |= HTT_RX_RING_FLAGS_RX_ATTENTION;
833 flags |= HTT_RX_RING_FLAGS_FRAG_INFO;
834 flags |= HTT_RX_RING_FLAGS_UNICAST_RX;
835 flags |= HTT_RX_RING_FLAGS_MULTICAST_RX;
836 flags |= HTT_RX_RING_FLAGS_CTRL_RX;
837 flags |= HTT_RX_RING_FLAGS_MGMT_RX;
838 flags |= HTT_RX_RING_FLAGS_NULL_RX;
839 flags |= HTT_RX_RING_FLAGS_PHY_DATA_RX;
840
841 fw_idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr);
842
843 ring->fw_idx_shadow_reg_paddr =
844 __cpu_to_le32(htt->rx_ring.alloc_idx.paddr);
845 ring->rx_ring_base_paddr = __cpu_to_le32(htt->rx_ring.base_paddr);
846 ring->rx_ring_len = __cpu_to_le16(htt->rx_ring.size);
847 ring->rx_ring_bufsize = __cpu_to_le16(HTT_RX_BUF_SIZE);
848 ring->flags = __cpu_to_le16(flags);
849 ring->fw_idx_init_val = __cpu_to_le16(fw_idx);
850
851 ath10k_htt_fill_rx_desc_offset_32(ring);
852 ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb);
853 if (ret) {
854 dev_kfree_skb_any(skb);
855 return ret;
856 }
857
858 return 0;
859 }
860
ath10k_htt_send_rx_ring_cfg_64(struct ath10k_htt * htt)861 static int ath10k_htt_send_rx_ring_cfg_64(struct ath10k_htt *htt)
862 {
863 struct ath10k *ar = htt->ar;
864 struct sk_buff *skb;
865 struct htt_cmd *cmd;
866 struct htt_rx_ring_setup_ring64 *ring;
867 const int num_rx_ring = 1;
868 u16 flags;
869 u32 fw_idx;
870 int len;
871 int ret;
872
873 /* HW expects the buffer to be an integral number of 4-byte
874 * "words"
875 */
876 BUILD_BUG_ON(!IS_ALIGNED(HTT_RX_BUF_SIZE, 4));
877 BUILD_BUG_ON((HTT_RX_BUF_SIZE & HTT_MAX_CACHE_LINE_SIZE_MASK) != 0);
878
879 len = sizeof(cmd->hdr) + sizeof(cmd->rx_setup_64.hdr)
880 + (sizeof(*ring) * num_rx_ring);
881 skb = ath10k_htc_alloc_skb(ar, len);
882 if (!skb)
883 return -ENOMEM;
884
885 skb_put(skb, len);
886
887 cmd = (struct htt_cmd *)skb->data;
888 ring = &cmd->rx_setup_64.rings[0];
889
890 cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_RX_RING_CFG;
891 cmd->rx_setup_64.hdr.num_rings = 1;
892
893 flags = 0;
894 flags |= HTT_RX_RING_FLAGS_MAC80211_HDR;
895 flags |= HTT_RX_RING_FLAGS_MSDU_PAYLOAD;
896 flags |= HTT_RX_RING_FLAGS_PPDU_START;
897 flags |= HTT_RX_RING_FLAGS_PPDU_END;
898 flags |= HTT_RX_RING_FLAGS_MPDU_START;
899 flags |= HTT_RX_RING_FLAGS_MPDU_END;
900 flags |= HTT_RX_RING_FLAGS_MSDU_START;
901 flags |= HTT_RX_RING_FLAGS_MSDU_END;
902 flags |= HTT_RX_RING_FLAGS_RX_ATTENTION;
903 flags |= HTT_RX_RING_FLAGS_FRAG_INFO;
904 flags |= HTT_RX_RING_FLAGS_UNICAST_RX;
905 flags |= HTT_RX_RING_FLAGS_MULTICAST_RX;
906 flags |= HTT_RX_RING_FLAGS_CTRL_RX;
907 flags |= HTT_RX_RING_FLAGS_MGMT_RX;
908 flags |= HTT_RX_RING_FLAGS_NULL_RX;
909 flags |= HTT_RX_RING_FLAGS_PHY_DATA_RX;
910
911 fw_idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr);
912
913 ring->fw_idx_shadow_reg_paddr = __cpu_to_le64(htt->rx_ring.alloc_idx.paddr);
914 ring->rx_ring_base_paddr = __cpu_to_le64(htt->rx_ring.base_paddr);
915 ring->rx_ring_len = __cpu_to_le16(htt->rx_ring.size);
916 ring->rx_ring_bufsize = __cpu_to_le16(HTT_RX_BUF_SIZE);
917 ring->flags = __cpu_to_le16(flags);
918 ring->fw_idx_init_val = __cpu_to_le16(fw_idx);
919
920 ath10k_htt_fill_rx_desc_offset_64(ring);
921 ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb);
922 if (ret) {
923 dev_kfree_skb_any(skb);
924 return ret;
925 }
926
927 return 0;
928 }
929
ath10k_htt_send_rx_ring_cfg_hl(struct ath10k_htt * htt)930 static int ath10k_htt_send_rx_ring_cfg_hl(struct ath10k_htt *htt)
931 {
932 struct ath10k *ar = htt->ar;
933 struct sk_buff *skb;
934 struct htt_cmd *cmd;
935 struct htt_rx_ring_setup_ring32 *ring;
936 const int num_rx_ring = 1;
937 u16 flags;
938 int len;
939 int ret;
940
941 /*
942 * the HW expects the buffer to be an integral number of 4-byte
943 * "words"
944 */
945 BUILD_BUG_ON(!IS_ALIGNED(HTT_RX_BUF_SIZE, 4));
946 BUILD_BUG_ON((HTT_RX_BUF_SIZE & HTT_MAX_CACHE_LINE_SIZE_MASK) != 0);
947
948 len = sizeof(cmd->hdr) + sizeof(cmd->rx_setup_32.hdr)
949 + (sizeof(*ring) * num_rx_ring);
950 skb = ath10k_htc_alloc_skb(ar, len);
951 if (!skb)
952 return -ENOMEM;
953
954 skb_put(skb, len);
955
956 cmd = (struct htt_cmd *)skb->data;
957 ring = &cmd->rx_setup_32.rings[0];
958
959 cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_RX_RING_CFG;
960 cmd->rx_setup_32.hdr.num_rings = 1;
961
962 flags = 0;
963 flags |= HTT_RX_RING_FLAGS_MSDU_PAYLOAD;
964 flags |= HTT_RX_RING_FLAGS_UNICAST_RX;
965 flags |= HTT_RX_RING_FLAGS_MULTICAST_RX;
966
967 memset(ring, 0, sizeof(*ring));
968 ring->rx_ring_len = __cpu_to_le16(HTT_RX_RING_SIZE_MIN);
969 ring->rx_ring_bufsize = __cpu_to_le16(HTT_RX_BUF_SIZE);
970 ring->flags = __cpu_to_le16(flags);
971
972 ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb);
973 if (ret) {
974 dev_kfree_skb_any(skb);
975 return ret;
976 }
977
978 return 0;
979 }
980
ath10k_htt_h2t_aggr_cfg_msg_32(struct ath10k_htt * htt,u8 max_subfrms_ampdu,u8 max_subfrms_amsdu)981 static int ath10k_htt_h2t_aggr_cfg_msg_32(struct ath10k_htt *htt,
982 u8 max_subfrms_ampdu,
983 u8 max_subfrms_amsdu)
984 {
985 struct ath10k *ar = htt->ar;
986 struct htt_aggr_conf *aggr_conf;
987 struct sk_buff *skb;
988 struct htt_cmd *cmd;
989 int len;
990 int ret;
991
992 /* Firmware defaults are: amsdu = 3 and ampdu = 64 */
993
994 if (max_subfrms_ampdu == 0 || max_subfrms_ampdu > 64)
995 return -EINVAL;
996
997 if (max_subfrms_amsdu == 0 || max_subfrms_amsdu > 31)
998 return -EINVAL;
999
1000 len = sizeof(cmd->hdr);
1001 len += sizeof(cmd->aggr_conf);
1002
1003 skb = ath10k_htc_alloc_skb(ar, len);
1004 if (!skb)
1005 return -ENOMEM;
1006
1007 skb_put(skb, len);
1008 cmd = (struct htt_cmd *)skb->data;
1009 cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_AGGR_CFG;
1010
1011 aggr_conf = &cmd->aggr_conf;
1012 aggr_conf->max_num_ampdu_subframes = max_subfrms_ampdu;
1013 aggr_conf->max_num_amsdu_subframes = max_subfrms_amsdu;
1014
1015 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt h2t aggr cfg msg amsdu %d ampdu %d",
1016 aggr_conf->max_num_amsdu_subframes,
1017 aggr_conf->max_num_ampdu_subframes);
1018
1019 ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb);
1020 if (ret) {
1021 dev_kfree_skb_any(skb);
1022 return ret;
1023 }
1024
1025 return 0;
1026 }
1027
ath10k_htt_h2t_aggr_cfg_msg_v2(struct ath10k_htt * htt,u8 max_subfrms_ampdu,u8 max_subfrms_amsdu)1028 static int ath10k_htt_h2t_aggr_cfg_msg_v2(struct ath10k_htt *htt,
1029 u8 max_subfrms_ampdu,
1030 u8 max_subfrms_amsdu)
1031 {
1032 struct ath10k *ar = htt->ar;
1033 struct htt_aggr_conf_v2 *aggr_conf;
1034 struct sk_buff *skb;
1035 struct htt_cmd *cmd;
1036 int len;
1037 int ret;
1038
1039 /* Firmware defaults are: amsdu = 3 and ampdu = 64 */
1040
1041 if (max_subfrms_ampdu == 0 || max_subfrms_ampdu > 64)
1042 return -EINVAL;
1043
1044 if (max_subfrms_amsdu == 0 || max_subfrms_amsdu > 31)
1045 return -EINVAL;
1046
1047 len = sizeof(cmd->hdr);
1048 len += sizeof(cmd->aggr_conf_v2);
1049
1050 skb = ath10k_htc_alloc_skb(ar, len);
1051 if (!skb)
1052 return -ENOMEM;
1053
1054 skb_put(skb, len);
1055 cmd = (struct htt_cmd *)skb->data;
1056 cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_AGGR_CFG;
1057
1058 aggr_conf = &cmd->aggr_conf_v2;
1059 aggr_conf->max_num_ampdu_subframes = max_subfrms_ampdu;
1060 aggr_conf->max_num_amsdu_subframes = max_subfrms_amsdu;
1061
1062 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt h2t aggr cfg msg amsdu %d ampdu %d",
1063 aggr_conf->max_num_amsdu_subframes,
1064 aggr_conf->max_num_ampdu_subframes);
1065
1066 ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb);
1067 if (ret) {
1068 dev_kfree_skb_any(skb);
1069 return ret;
1070 }
1071
1072 return 0;
1073 }
1074
ath10k_htt_tx_fetch_resp(struct ath10k * ar,__le32 token,__le16 fetch_seq_num,struct htt_tx_fetch_record * records,size_t num_records)1075 int ath10k_htt_tx_fetch_resp(struct ath10k *ar,
1076 __le32 token,
1077 __le16 fetch_seq_num,
1078 struct htt_tx_fetch_record *records,
1079 size_t num_records)
1080 {
1081 struct sk_buff *skb;
1082 struct htt_cmd *cmd;
1083 const u16 resp_id = 0;
1084 int len = 0;
1085 int ret;
1086
1087 /* Response IDs are echo-ed back only for host driver convienence
1088 * purposes. They aren't used for anything in the driver yet so use 0.
1089 */
1090
1091 len += sizeof(cmd->hdr);
1092 len += sizeof(cmd->tx_fetch_resp);
1093 len += sizeof(cmd->tx_fetch_resp.records[0]) * num_records;
1094
1095 skb = ath10k_htc_alloc_skb(ar, len);
1096 if (!skb)
1097 return -ENOMEM;
1098
1099 skb_put(skb, len);
1100 cmd = (struct htt_cmd *)skb->data;
1101 cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_TX_FETCH_RESP;
1102 cmd->tx_fetch_resp.resp_id = cpu_to_le16(resp_id);
1103 cmd->tx_fetch_resp.fetch_seq_num = fetch_seq_num;
1104 cmd->tx_fetch_resp.num_records = cpu_to_le16(num_records);
1105 cmd->tx_fetch_resp.token = token;
1106
1107 memcpy(cmd->tx_fetch_resp.records, records,
1108 sizeof(records[0]) * num_records);
1109
1110 ret = ath10k_htc_send(&ar->htc, ar->htt.eid, skb);
1111 if (ret) {
1112 ath10k_warn(ar, "failed to submit htc command: %d\n", ret);
1113 goto err_free_skb;
1114 }
1115
1116 return 0;
1117
1118 err_free_skb:
1119 dev_kfree_skb_any(skb);
1120
1121 return ret;
1122 }
1123
ath10k_htt_tx_get_vdev_id(struct ath10k * ar,struct sk_buff * skb)1124 static u8 ath10k_htt_tx_get_vdev_id(struct ath10k *ar, struct sk_buff *skb)
1125 {
1126 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1127 struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
1128 struct ath10k_vif *arvif;
1129
1130 if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
1131 return ar->scan.vdev_id;
1132 } else if (cb->vif) {
1133 arvif = (void *)cb->vif->drv_priv;
1134 return arvif->vdev_id;
1135 } else if (ar->monitor_started) {
1136 return ar->monitor_vdev_id;
1137 } else {
1138 return 0;
1139 }
1140 }
1141
ath10k_htt_tx_get_tid(struct sk_buff * skb,bool is_eth)1142 static u8 ath10k_htt_tx_get_tid(struct sk_buff *skb, bool is_eth)
1143 {
1144 struct ieee80211_hdr *hdr = (void *)skb->data;
1145 struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
1146
1147 if (!is_eth && ieee80211_is_mgmt(hdr->frame_control))
1148 return HTT_DATA_TX_EXT_TID_MGMT;
1149 else if (cb->flags & ATH10K_SKB_F_QOS)
1150 return skb->priority & IEEE80211_QOS_CTL_TID_MASK;
1151 else
1152 return HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
1153 }
1154
ath10k_htt_mgmt_tx(struct ath10k_htt * htt,struct sk_buff * msdu)1155 int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
1156 {
1157 struct ath10k *ar = htt->ar;
1158 struct device *dev = ar->dev;
1159 struct sk_buff *txdesc = NULL;
1160 struct htt_cmd *cmd;
1161 struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(msdu);
1162 u8 vdev_id = ath10k_htt_tx_get_vdev_id(ar, msdu);
1163 int len = 0;
1164 int msdu_id = -1;
1165 int res;
1166 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data;
1167
1168 len += sizeof(cmd->hdr);
1169 len += sizeof(cmd->mgmt_tx);
1170
1171 res = ath10k_htt_tx_alloc_msdu_id(htt, msdu);
1172 if (res < 0)
1173 goto err;
1174
1175 msdu_id = res;
1176
1177 if ((ieee80211_is_action(hdr->frame_control) ||
1178 ieee80211_is_deauth(hdr->frame_control) ||
1179 ieee80211_is_disassoc(hdr->frame_control)) &&
1180 ieee80211_has_protected(hdr->frame_control)) {
1181 skb_put(msdu, IEEE80211_CCMP_MIC_LEN);
1182 }
1183
1184 txdesc = ath10k_htc_alloc_skb(ar, len);
1185 if (!txdesc) {
1186 res = -ENOMEM;
1187 goto err_free_msdu_id;
1188 }
1189
1190 skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len,
1191 DMA_TO_DEVICE);
1192 res = dma_mapping_error(dev, skb_cb->paddr);
1193 if (res) {
1194 res = -EIO;
1195 goto err_free_txdesc;
1196 }
1197
1198 skb_put(txdesc, len);
1199 cmd = (struct htt_cmd *)txdesc->data;
1200 memset(cmd, 0, len);
1201
1202 cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_MGMT_TX;
1203 cmd->mgmt_tx.msdu_paddr = __cpu_to_le32(ATH10K_SKB_CB(msdu)->paddr);
1204 cmd->mgmt_tx.len = __cpu_to_le32(msdu->len);
1205 cmd->mgmt_tx.desc_id = __cpu_to_le32(msdu_id);
1206 cmd->mgmt_tx.vdev_id = __cpu_to_le32(vdev_id);
1207 memcpy(cmd->mgmt_tx.hdr, msdu->data,
1208 min_t(int, msdu->len, HTT_MGMT_FRM_HDR_DOWNLOAD_LEN));
1209
1210 res = ath10k_htc_send(&htt->ar->htc, htt->eid, txdesc);
1211 if (res)
1212 goto err_unmap_msdu;
1213
1214 return 0;
1215
1216 err_unmap_msdu:
1217 if (ar->bus_param.dev_type != ATH10K_DEV_TYPE_HL)
1218 dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
1219 err_free_txdesc:
1220 dev_kfree_skb_any(txdesc);
1221 err_free_msdu_id:
1222 spin_lock_bh(&htt->tx_lock);
1223 ath10k_htt_tx_free_msdu_id(htt, msdu_id);
1224 spin_unlock_bh(&htt->tx_lock);
1225 err:
1226 return res;
1227 }
1228
1229 #define HTT_TX_HL_NEEDED_HEADROOM \
1230 (unsigned int)(sizeof(struct htt_cmd_hdr) + \
1231 sizeof(struct htt_data_tx_desc) + \
1232 sizeof(struct ath10k_htc_hdr))
1233
ath10k_htt_tx_hl(struct ath10k_htt * htt,enum ath10k_hw_txrx_mode txmode,struct sk_buff * msdu)1234 static int ath10k_htt_tx_hl(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txmode,
1235 struct sk_buff *msdu)
1236 {
1237 struct ath10k *ar = htt->ar;
1238 int res, data_len;
1239 struct htt_cmd_hdr *cmd_hdr;
1240 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data;
1241 struct htt_data_tx_desc *tx_desc;
1242 struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(msdu);
1243 struct sk_buff *tmp_skb;
1244 bool is_eth = (txmode == ATH10K_HW_TXRX_ETHERNET);
1245 u8 vdev_id = ath10k_htt_tx_get_vdev_id(ar, msdu);
1246 u8 tid = ath10k_htt_tx_get_tid(msdu, is_eth);
1247 u8 flags0 = 0;
1248 u16 flags1 = 0;
1249 u16 msdu_id = 0;
1250
1251 if ((ieee80211_is_action(hdr->frame_control) ||
1252 ieee80211_is_deauth(hdr->frame_control) ||
1253 ieee80211_is_disassoc(hdr->frame_control)) &&
1254 ieee80211_has_protected(hdr->frame_control)) {
1255 skb_put(msdu, IEEE80211_CCMP_MIC_LEN);
1256 }
1257
1258 data_len = msdu->len;
1259
1260 switch (txmode) {
1261 case ATH10K_HW_TXRX_RAW:
1262 case ATH10K_HW_TXRX_NATIVE_WIFI:
1263 flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT;
1264 /* fall through */
1265 case ATH10K_HW_TXRX_ETHERNET:
1266 flags0 |= SM(txmode, HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE);
1267 break;
1268 case ATH10K_HW_TXRX_MGMT:
1269 flags0 |= SM(ATH10K_HW_TXRX_MGMT,
1270 HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE);
1271 flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT;
1272 break;
1273 }
1274
1275 if (skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT)
1276 flags0 |= HTT_DATA_TX_DESC_FLAGS0_NO_ENCRYPT;
1277
1278 flags1 |= SM((u16)vdev_id, HTT_DATA_TX_DESC_FLAGS1_VDEV_ID);
1279 flags1 |= SM((u16)tid, HTT_DATA_TX_DESC_FLAGS1_EXT_TID);
1280 if (msdu->ip_summed == CHECKSUM_PARTIAL &&
1281 !test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) {
1282 flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L3_OFFLOAD;
1283 flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L4_OFFLOAD;
1284 }
1285
1286 /* Prepend the HTT header and TX desc struct to the data message
1287 * and realloc the skb if it does not have enough headroom.
1288 */
1289 if (skb_headroom(msdu) < HTT_TX_HL_NEEDED_HEADROOM) {
1290 tmp_skb = msdu;
1291
1292 ath10k_dbg(htt->ar, ATH10K_DBG_HTT,
1293 "Not enough headroom in skb. Current headroom: %u, needed: %u. Reallocating...\n",
1294 skb_headroom(msdu), HTT_TX_HL_NEEDED_HEADROOM);
1295 msdu = skb_realloc_headroom(msdu, HTT_TX_HL_NEEDED_HEADROOM);
1296 kfree_skb(tmp_skb);
1297 if (!msdu) {
1298 ath10k_warn(htt->ar, "htt hl tx: Unable to realloc skb!\n");
1299 res = -ENOMEM;
1300 goto out;
1301 }
1302 }
1303
1304 if (ar->bus_param.hl_msdu_ids) {
1305 flags1 |= HTT_DATA_TX_DESC_FLAGS1_POSTPONED;
1306 res = ath10k_htt_tx_alloc_msdu_id(htt, msdu);
1307 if (res < 0) {
1308 ath10k_err(ar, "msdu_id allocation failed %d\n", res);
1309 goto out;
1310 }
1311 msdu_id = res;
1312 }
1313
1314 /* As msdu is freed by mac80211 (in ieee80211_tx_status()) and by
1315 * ath10k (in ath10k_htt_htc_tx_complete()) we have to increase
1316 * reference by one to avoid a use-after-free case and a double
1317 * free.
1318 */
1319 skb_get(msdu);
1320
1321 skb_push(msdu, sizeof(*cmd_hdr));
1322 skb_push(msdu, sizeof(*tx_desc));
1323 cmd_hdr = (struct htt_cmd_hdr *)msdu->data;
1324 tx_desc = (struct htt_data_tx_desc *)(msdu->data + sizeof(*cmd_hdr));
1325
1326 cmd_hdr->msg_type = HTT_H2T_MSG_TYPE_TX_FRM;
1327 tx_desc->flags0 = flags0;
1328 tx_desc->flags1 = __cpu_to_le16(flags1);
1329 tx_desc->len = __cpu_to_le16(data_len);
1330 tx_desc->id = __cpu_to_le16(msdu_id);
1331 tx_desc->frags_paddr = 0; /* always zero */
1332 /* Initialize peer_id to INVALID_PEER because this is NOT
1333 * Reinjection path
1334 */
1335 tx_desc->peerid = __cpu_to_le32(HTT_INVALID_PEERID);
1336
1337 res = ath10k_htc_send(&htt->ar->htc, htt->eid, msdu);
1338
1339 out:
1340 return res;
1341 }
1342
ath10k_htt_tx_32(struct ath10k_htt * htt,enum ath10k_hw_txrx_mode txmode,struct sk_buff * msdu)1343 static int ath10k_htt_tx_32(struct ath10k_htt *htt,
1344 enum ath10k_hw_txrx_mode txmode,
1345 struct sk_buff *msdu)
1346 {
1347 struct ath10k *ar = htt->ar;
1348 struct device *dev = ar->dev;
1349 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data;
1350 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(msdu);
1351 struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(msdu);
1352 struct ath10k_hif_sg_item sg_items[2];
1353 struct ath10k_htt_txbuf_32 *txbuf;
1354 struct htt_data_tx_desc_frag *frags;
1355 bool is_eth = (txmode == ATH10K_HW_TXRX_ETHERNET);
1356 u8 vdev_id = ath10k_htt_tx_get_vdev_id(ar, msdu);
1357 u8 tid = ath10k_htt_tx_get_tid(msdu, is_eth);
1358 int prefetch_len;
1359 int res;
1360 u8 flags0 = 0;
1361 u16 msdu_id, flags1 = 0;
1362 u16 freq = 0;
1363 u32 frags_paddr = 0;
1364 u32 txbuf_paddr;
1365 struct htt_msdu_ext_desc *ext_desc = NULL;
1366 struct htt_msdu_ext_desc *ext_desc_t = NULL;
1367
1368 res = ath10k_htt_tx_alloc_msdu_id(htt, msdu);
1369 if (res < 0)
1370 goto err;
1371
1372 msdu_id = res;
1373
1374 prefetch_len = min(htt->prefetch_len, msdu->len);
1375 prefetch_len = roundup(prefetch_len, 4);
1376
1377 txbuf = htt->txbuf.vaddr_txbuff_32 + msdu_id;
1378 txbuf_paddr = htt->txbuf.paddr +
1379 (sizeof(struct ath10k_htt_txbuf_32) * msdu_id);
1380
1381 if ((ieee80211_is_action(hdr->frame_control) ||
1382 ieee80211_is_deauth(hdr->frame_control) ||
1383 ieee80211_is_disassoc(hdr->frame_control)) &&
1384 ieee80211_has_protected(hdr->frame_control)) {
1385 skb_put(msdu, IEEE80211_CCMP_MIC_LEN);
1386 } else if (!(skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT) &&
1387 txmode == ATH10K_HW_TXRX_RAW &&
1388 ieee80211_has_protected(hdr->frame_control)) {
1389 skb_put(msdu, IEEE80211_CCMP_MIC_LEN);
1390 }
1391
1392 skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len,
1393 DMA_TO_DEVICE);
1394 res = dma_mapping_error(dev, skb_cb->paddr);
1395 if (res) {
1396 res = -EIO;
1397 goto err_free_msdu_id;
1398 }
1399
1400 if (unlikely(info->flags & IEEE80211_TX_CTL_TX_OFFCHAN))
1401 freq = ar->scan.roc_freq;
1402
1403 switch (txmode) {
1404 case ATH10K_HW_TXRX_RAW:
1405 case ATH10K_HW_TXRX_NATIVE_WIFI:
1406 flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT;
1407 /* fall through */
1408 case ATH10K_HW_TXRX_ETHERNET:
1409 if (ar->hw_params.continuous_frag_desc) {
1410 ext_desc_t = htt->frag_desc.vaddr_desc_32;
1411 memset(&ext_desc_t[msdu_id], 0,
1412 sizeof(struct htt_msdu_ext_desc));
1413 frags = (struct htt_data_tx_desc_frag *)
1414 &ext_desc_t[msdu_id].frags;
1415 ext_desc = &ext_desc_t[msdu_id];
1416 frags[0].tword_addr.paddr_lo =
1417 __cpu_to_le32(skb_cb->paddr);
1418 frags[0].tword_addr.paddr_hi = 0;
1419 frags[0].tword_addr.len_16 = __cpu_to_le16(msdu->len);
1420
1421 frags_paddr = htt->frag_desc.paddr +
1422 (sizeof(struct htt_msdu_ext_desc) * msdu_id);
1423 } else {
1424 frags = txbuf->frags;
1425 frags[0].dword_addr.paddr =
1426 __cpu_to_le32(skb_cb->paddr);
1427 frags[0].dword_addr.len = __cpu_to_le32(msdu->len);
1428 frags[1].dword_addr.paddr = 0;
1429 frags[1].dword_addr.len = 0;
1430
1431 frags_paddr = txbuf_paddr;
1432 }
1433 flags0 |= SM(txmode, HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE);
1434 break;
1435 case ATH10K_HW_TXRX_MGMT:
1436 flags0 |= SM(ATH10K_HW_TXRX_MGMT,
1437 HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE);
1438 flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT;
1439
1440 frags_paddr = skb_cb->paddr;
1441 break;
1442 }
1443
1444 /* Normally all commands go through HTC which manages tx credits for
1445 * each endpoint and notifies when tx is completed.
1446 *
1447 * HTT endpoint is creditless so there's no need to care about HTC
1448 * flags. In that case it is trivial to fill the HTC header here.
1449 *
1450 * MSDU transmission is considered completed upon HTT event. This
1451 * implies no relevant resources can be freed until after the event is
1452 * received. That's why HTC tx completion handler itself is ignored by
1453 * setting NULL to transfer_context for all sg items.
1454 *
1455 * There is simply no point in pushing HTT TX_FRM through HTC tx path
1456 * as it's a waste of resources. By bypassing HTC it is possible to
1457 * avoid extra memory allocations, compress data structures and thus
1458 * improve performance.
1459 */
1460
1461 txbuf->htc_hdr.eid = htt->eid;
1462 txbuf->htc_hdr.len = __cpu_to_le16(sizeof(txbuf->cmd_hdr) +
1463 sizeof(txbuf->cmd_tx) +
1464 prefetch_len);
1465 txbuf->htc_hdr.flags = 0;
1466
1467 if (skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT)
1468 flags0 |= HTT_DATA_TX_DESC_FLAGS0_NO_ENCRYPT;
1469
1470 flags1 |= SM((u16)vdev_id, HTT_DATA_TX_DESC_FLAGS1_VDEV_ID);
1471 flags1 |= SM((u16)tid, HTT_DATA_TX_DESC_FLAGS1_EXT_TID);
1472 if (msdu->ip_summed == CHECKSUM_PARTIAL &&
1473 !test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) {
1474 flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L3_OFFLOAD;
1475 flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L4_OFFLOAD;
1476 if (ar->hw_params.continuous_frag_desc)
1477 ext_desc->flags |= HTT_MSDU_CHECKSUM_ENABLE;
1478 }
1479
1480 /* Prevent firmware from sending up tx inspection requests. There's
1481 * nothing ath10k can do with frames requested for inspection so force
1482 * it to simply rely a regular tx completion with discard status.
1483 */
1484 flags1 |= HTT_DATA_TX_DESC_FLAGS1_POSTPONED;
1485
1486 txbuf->cmd_hdr.msg_type = HTT_H2T_MSG_TYPE_TX_FRM;
1487 txbuf->cmd_tx.flags0 = flags0;
1488 txbuf->cmd_tx.flags1 = __cpu_to_le16(flags1);
1489 txbuf->cmd_tx.len = __cpu_to_le16(msdu->len);
1490 txbuf->cmd_tx.id = __cpu_to_le16(msdu_id);
1491 txbuf->cmd_tx.frags_paddr = __cpu_to_le32(frags_paddr);
1492 if (ath10k_mac_tx_frm_has_freq(ar)) {
1493 txbuf->cmd_tx.offchan_tx.peerid =
1494 __cpu_to_le16(HTT_INVALID_PEERID);
1495 txbuf->cmd_tx.offchan_tx.freq =
1496 __cpu_to_le16(freq);
1497 } else {
1498 txbuf->cmd_tx.peerid =
1499 __cpu_to_le32(HTT_INVALID_PEERID);
1500 }
1501
1502 trace_ath10k_htt_tx(ar, msdu_id, msdu->len, vdev_id, tid);
1503 ath10k_dbg(ar, ATH10K_DBG_HTT,
1504 "htt tx flags0 %hhu flags1 %hu len %d id %hu frags_paddr %pad, msdu_paddr %pad vdev %hhu tid %hhu freq %hu\n",
1505 flags0, flags1, msdu->len, msdu_id, &frags_paddr,
1506 &skb_cb->paddr, vdev_id, tid, freq);
1507 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt tx msdu: ",
1508 msdu->data, msdu->len);
1509 trace_ath10k_tx_hdr(ar, msdu->data, msdu->len);
1510 trace_ath10k_tx_payload(ar, msdu->data, msdu->len);
1511
1512 sg_items[0].transfer_id = 0;
1513 sg_items[0].transfer_context = NULL;
1514 sg_items[0].vaddr = &txbuf->htc_hdr;
1515 sg_items[0].paddr = txbuf_paddr +
1516 sizeof(txbuf->frags);
1517 sg_items[0].len = sizeof(txbuf->htc_hdr) +
1518 sizeof(txbuf->cmd_hdr) +
1519 sizeof(txbuf->cmd_tx);
1520
1521 sg_items[1].transfer_id = 0;
1522 sg_items[1].transfer_context = NULL;
1523 sg_items[1].vaddr = msdu->data;
1524 sg_items[1].paddr = skb_cb->paddr;
1525 sg_items[1].len = prefetch_len;
1526
1527 res = ath10k_hif_tx_sg(htt->ar,
1528 htt->ar->htc.endpoint[htt->eid].ul_pipe_id,
1529 sg_items, ARRAY_SIZE(sg_items));
1530 if (res)
1531 goto err_unmap_msdu;
1532
1533 return 0;
1534
1535 err_unmap_msdu:
1536 dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
1537 err_free_msdu_id:
1538 ath10k_htt_tx_free_msdu_id(htt, msdu_id);
1539 err:
1540 return res;
1541 }
1542
ath10k_htt_tx_64(struct ath10k_htt * htt,enum ath10k_hw_txrx_mode txmode,struct sk_buff * msdu)1543 static int ath10k_htt_tx_64(struct ath10k_htt *htt,
1544 enum ath10k_hw_txrx_mode txmode,
1545 struct sk_buff *msdu)
1546 {
1547 struct ath10k *ar = htt->ar;
1548 struct device *dev = ar->dev;
1549 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data;
1550 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(msdu);
1551 struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(msdu);
1552 struct ath10k_hif_sg_item sg_items[2];
1553 struct ath10k_htt_txbuf_64 *txbuf;
1554 struct htt_data_tx_desc_frag *frags;
1555 bool is_eth = (txmode == ATH10K_HW_TXRX_ETHERNET);
1556 u8 vdev_id = ath10k_htt_tx_get_vdev_id(ar, msdu);
1557 u8 tid = ath10k_htt_tx_get_tid(msdu, is_eth);
1558 int prefetch_len;
1559 int res;
1560 u8 flags0 = 0;
1561 u16 msdu_id, flags1 = 0;
1562 u16 freq = 0;
1563 dma_addr_t frags_paddr = 0;
1564 dma_addr_t txbuf_paddr;
1565 struct htt_msdu_ext_desc_64 *ext_desc = NULL;
1566 struct htt_msdu_ext_desc_64 *ext_desc_t = NULL;
1567
1568 res = ath10k_htt_tx_alloc_msdu_id(htt, msdu);
1569 if (res < 0)
1570 goto err;
1571
1572 msdu_id = res;
1573
1574 prefetch_len = min(htt->prefetch_len, msdu->len);
1575 prefetch_len = roundup(prefetch_len, 4);
1576
1577 txbuf = htt->txbuf.vaddr_txbuff_64 + msdu_id;
1578 txbuf_paddr = htt->txbuf.paddr +
1579 (sizeof(struct ath10k_htt_txbuf_64) * msdu_id);
1580
1581 if ((ieee80211_is_action(hdr->frame_control) ||
1582 ieee80211_is_deauth(hdr->frame_control) ||
1583 ieee80211_is_disassoc(hdr->frame_control)) &&
1584 ieee80211_has_protected(hdr->frame_control)) {
1585 skb_put(msdu, IEEE80211_CCMP_MIC_LEN);
1586 } else if (!(skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT) &&
1587 txmode == ATH10K_HW_TXRX_RAW &&
1588 ieee80211_has_protected(hdr->frame_control)) {
1589 skb_put(msdu, IEEE80211_CCMP_MIC_LEN);
1590 }
1591
1592 skb_cb->paddr = dma_map_single(dev, msdu->data, msdu->len,
1593 DMA_TO_DEVICE);
1594 res = dma_mapping_error(dev, skb_cb->paddr);
1595 if (res) {
1596 res = -EIO;
1597 goto err_free_msdu_id;
1598 }
1599
1600 if (unlikely(info->flags & IEEE80211_TX_CTL_TX_OFFCHAN))
1601 freq = ar->scan.roc_freq;
1602
1603 switch (txmode) {
1604 case ATH10K_HW_TXRX_RAW:
1605 case ATH10K_HW_TXRX_NATIVE_WIFI:
1606 flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT;
1607 /* fall through */
1608 case ATH10K_HW_TXRX_ETHERNET:
1609 if (ar->hw_params.continuous_frag_desc) {
1610 ext_desc_t = htt->frag_desc.vaddr_desc_64;
1611 memset(&ext_desc_t[msdu_id], 0,
1612 sizeof(struct htt_msdu_ext_desc_64));
1613 frags = (struct htt_data_tx_desc_frag *)
1614 &ext_desc_t[msdu_id].frags;
1615 ext_desc = &ext_desc_t[msdu_id];
1616 frags[0].tword_addr.paddr_lo =
1617 __cpu_to_le32(skb_cb->paddr);
1618 frags[0].tword_addr.paddr_hi =
1619 __cpu_to_le16(upper_32_bits(skb_cb->paddr));
1620 frags[0].tword_addr.len_16 = __cpu_to_le16(msdu->len);
1621
1622 frags_paddr = htt->frag_desc.paddr +
1623 (sizeof(struct htt_msdu_ext_desc_64) * msdu_id);
1624 } else {
1625 frags = txbuf->frags;
1626 frags[0].tword_addr.paddr_lo =
1627 __cpu_to_le32(skb_cb->paddr);
1628 frags[0].tword_addr.paddr_hi =
1629 __cpu_to_le16(upper_32_bits(skb_cb->paddr));
1630 frags[0].tword_addr.len_16 = __cpu_to_le16(msdu->len);
1631 frags[1].tword_addr.paddr_lo = 0;
1632 frags[1].tword_addr.paddr_hi = 0;
1633 frags[1].tword_addr.len_16 = 0;
1634 }
1635 flags0 |= SM(txmode, HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE);
1636 break;
1637 case ATH10K_HW_TXRX_MGMT:
1638 flags0 |= SM(ATH10K_HW_TXRX_MGMT,
1639 HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE);
1640 flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT;
1641
1642 frags_paddr = skb_cb->paddr;
1643 break;
1644 }
1645
1646 /* Normally all commands go through HTC which manages tx credits for
1647 * each endpoint and notifies when tx is completed.
1648 *
1649 * HTT endpoint is creditless so there's no need to care about HTC
1650 * flags. In that case it is trivial to fill the HTC header here.
1651 *
1652 * MSDU transmission is considered completed upon HTT event. This
1653 * implies no relevant resources can be freed until after the event is
1654 * received. That's why HTC tx completion handler itself is ignored by
1655 * setting NULL to transfer_context for all sg items.
1656 *
1657 * There is simply no point in pushing HTT TX_FRM through HTC tx path
1658 * as it's a waste of resources. By bypassing HTC it is possible to
1659 * avoid extra memory allocations, compress data structures and thus
1660 * improve performance.
1661 */
1662
1663 txbuf->htc_hdr.eid = htt->eid;
1664 txbuf->htc_hdr.len = __cpu_to_le16(sizeof(txbuf->cmd_hdr) +
1665 sizeof(txbuf->cmd_tx) +
1666 prefetch_len);
1667 txbuf->htc_hdr.flags = 0;
1668
1669 if (skb_cb->flags & ATH10K_SKB_F_NO_HWCRYPT)
1670 flags0 |= HTT_DATA_TX_DESC_FLAGS0_NO_ENCRYPT;
1671
1672 flags1 |= SM((u16)vdev_id, HTT_DATA_TX_DESC_FLAGS1_VDEV_ID);
1673 flags1 |= SM((u16)tid, HTT_DATA_TX_DESC_FLAGS1_EXT_TID);
1674 if (msdu->ip_summed == CHECKSUM_PARTIAL &&
1675 !test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) {
1676 flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L3_OFFLOAD;
1677 flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L4_OFFLOAD;
1678 if (ar->hw_params.continuous_frag_desc) {
1679 memset(ext_desc->tso_flag, 0, sizeof(ext_desc->tso_flag));
1680 ext_desc->tso_flag[3] |=
1681 __cpu_to_le32(HTT_MSDU_CHECKSUM_ENABLE_64);
1682 }
1683 }
1684
1685 /* Prevent firmware from sending up tx inspection requests. There's
1686 * nothing ath10k can do with frames requested for inspection so force
1687 * it to simply rely a regular tx completion with discard status.
1688 */
1689 flags1 |= HTT_DATA_TX_DESC_FLAGS1_POSTPONED;
1690
1691 txbuf->cmd_hdr.msg_type = HTT_H2T_MSG_TYPE_TX_FRM;
1692 txbuf->cmd_tx.flags0 = flags0;
1693 txbuf->cmd_tx.flags1 = __cpu_to_le16(flags1);
1694 txbuf->cmd_tx.len = __cpu_to_le16(msdu->len);
1695 txbuf->cmd_tx.id = __cpu_to_le16(msdu_id);
1696
1697 /* fill fragment descriptor */
1698 txbuf->cmd_tx.frags_paddr = __cpu_to_le64(frags_paddr);
1699 if (ath10k_mac_tx_frm_has_freq(ar)) {
1700 txbuf->cmd_tx.offchan_tx.peerid =
1701 __cpu_to_le16(HTT_INVALID_PEERID);
1702 txbuf->cmd_tx.offchan_tx.freq =
1703 __cpu_to_le16(freq);
1704 } else {
1705 txbuf->cmd_tx.peerid =
1706 __cpu_to_le32(HTT_INVALID_PEERID);
1707 }
1708
1709 trace_ath10k_htt_tx(ar, msdu_id, msdu->len, vdev_id, tid);
1710 ath10k_dbg(ar, ATH10K_DBG_HTT,
1711 "htt tx flags0 %hhu flags1 %hu len %d id %hu frags_paddr %pad, msdu_paddr %pad vdev %hhu tid %hhu freq %hu\n",
1712 flags0, flags1, msdu->len, msdu_id, &frags_paddr,
1713 &skb_cb->paddr, vdev_id, tid, freq);
1714 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt tx msdu: ",
1715 msdu->data, msdu->len);
1716 trace_ath10k_tx_hdr(ar, msdu->data, msdu->len);
1717 trace_ath10k_tx_payload(ar, msdu->data, msdu->len);
1718
1719 sg_items[0].transfer_id = 0;
1720 sg_items[0].transfer_context = NULL;
1721 sg_items[0].vaddr = &txbuf->htc_hdr;
1722 sg_items[0].paddr = txbuf_paddr +
1723 sizeof(txbuf->frags);
1724 sg_items[0].len = sizeof(txbuf->htc_hdr) +
1725 sizeof(txbuf->cmd_hdr) +
1726 sizeof(txbuf->cmd_tx);
1727
1728 sg_items[1].transfer_id = 0;
1729 sg_items[1].transfer_context = NULL;
1730 sg_items[1].vaddr = msdu->data;
1731 sg_items[1].paddr = skb_cb->paddr;
1732 sg_items[1].len = prefetch_len;
1733
1734 res = ath10k_hif_tx_sg(htt->ar,
1735 htt->ar->htc.endpoint[htt->eid].ul_pipe_id,
1736 sg_items, ARRAY_SIZE(sg_items));
1737 if (res)
1738 goto err_unmap_msdu;
1739
1740 return 0;
1741
1742 err_unmap_msdu:
1743 dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
1744 err_free_msdu_id:
1745 ath10k_htt_tx_free_msdu_id(htt, msdu_id);
1746 err:
1747 return res;
1748 }
1749
1750 static const struct ath10k_htt_tx_ops htt_tx_ops_32 = {
1751 .htt_send_rx_ring_cfg = ath10k_htt_send_rx_ring_cfg_32,
1752 .htt_send_frag_desc_bank_cfg = ath10k_htt_send_frag_desc_bank_cfg_32,
1753 .htt_alloc_frag_desc = ath10k_htt_tx_alloc_cont_frag_desc_32,
1754 .htt_free_frag_desc = ath10k_htt_tx_free_cont_frag_desc_32,
1755 .htt_tx = ath10k_htt_tx_32,
1756 .htt_alloc_txbuff = ath10k_htt_tx_alloc_cont_txbuf_32,
1757 .htt_free_txbuff = ath10k_htt_tx_free_cont_txbuf_32,
1758 .htt_h2t_aggr_cfg_msg = ath10k_htt_h2t_aggr_cfg_msg_32,
1759 };
1760
1761 static const struct ath10k_htt_tx_ops htt_tx_ops_64 = {
1762 .htt_send_rx_ring_cfg = ath10k_htt_send_rx_ring_cfg_64,
1763 .htt_send_frag_desc_bank_cfg = ath10k_htt_send_frag_desc_bank_cfg_64,
1764 .htt_alloc_frag_desc = ath10k_htt_tx_alloc_cont_frag_desc_64,
1765 .htt_free_frag_desc = ath10k_htt_tx_free_cont_frag_desc_64,
1766 .htt_tx = ath10k_htt_tx_64,
1767 .htt_alloc_txbuff = ath10k_htt_tx_alloc_cont_txbuf_64,
1768 .htt_free_txbuff = ath10k_htt_tx_free_cont_txbuf_64,
1769 .htt_h2t_aggr_cfg_msg = ath10k_htt_h2t_aggr_cfg_msg_v2,
1770 };
1771
1772 static const struct ath10k_htt_tx_ops htt_tx_ops_hl = {
1773 .htt_send_rx_ring_cfg = ath10k_htt_send_rx_ring_cfg_hl,
1774 .htt_send_frag_desc_bank_cfg = ath10k_htt_send_frag_desc_bank_cfg_32,
1775 .htt_tx = ath10k_htt_tx_hl,
1776 .htt_h2t_aggr_cfg_msg = ath10k_htt_h2t_aggr_cfg_msg_32,
1777 };
1778
ath10k_htt_set_tx_ops(struct ath10k_htt * htt)1779 void ath10k_htt_set_tx_ops(struct ath10k_htt *htt)
1780 {
1781 struct ath10k *ar = htt->ar;
1782
1783 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
1784 htt->tx_ops = &htt_tx_ops_hl;
1785 else if (ar->hw_params.target_64bit)
1786 htt->tx_ops = &htt_tx_ops_64;
1787 else
1788 htt->tx_ops = &htt_tx_ops_32;
1789 }
1790
