1 // SPDX-License-Identifier: BSD-3-Clause-Clear
2 /*
3 * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
4 * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
5 */
6
7 #include "../core.h"
8 #include "../debug.h"
9 #include "../dp_tx.h"
10 #include "../peer.h"
11 #include "dp_tx.h"
12 #include "hal_desc.h"
13 #include "hal.h"
14 #include "hal_tx.h"
15
16 static void
ath12k_wifi7_hal_tx_cmd_ext_desc_setup(struct ath12k_base * ab,struct hal_tx_msdu_ext_desc * tcl_ext_cmd,struct hal_tx_info * ti)17 ath12k_wifi7_hal_tx_cmd_ext_desc_setup(struct ath12k_base *ab,
18 struct hal_tx_msdu_ext_desc *tcl_ext_cmd,
19 struct hal_tx_info *ti)
20 {
21 tcl_ext_cmd->info0 = le32_encode_bits(ti->paddr,
22 HAL_TX_MSDU_EXT_INFO0_BUF_PTR_LO);
23 tcl_ext_cmd->info1 = le32_encode_bits(0x0,
24 HAL_TX_MSDU_EXT_INFO1_BUF_PTR_HI) |
25 le32_encode_bits(ti->data_len,
26 HAL_TX_MSDU_EXT_INFO1_BUF_LEN);
27
28 tcl_ext_cmd->info1 |= le32_encode_bits(1, HAL_TX_MSDU_EXT_INFO1_EXTN_OVERRIDE) |
29 le32_encode_bits(ti->encap_type,
30 HAL_TX_MSDU_EXT_INFO1_ENCAP_TYPE) |
31 le32_encode_bits(ti->encrypt_type,
32 HAL_TX_MSDU_EXT_INFO1_ENCRYPT_TYPE);
33 }
34
35 #define HTT_META_DATA_ALIGNMENT 0x8
36
37 /* Preparing HTT Metadata when utilized with ext MSDU */
ath12k_wifi7_dp_prepare_htt_metadata(struct sk_buff * skb)38 static int ath12k_wifi7_dp_prepare_htt_metadata(struct sk_buff *skb)
39 {
40 struct hal_tx_msdu_metadata *desc_ext;
41 u8 htt_desc_size;
42 /* Size rounded of multiple of 8 bytes */
43 u8 htt_desc_size_aligned;
44
45 htt_desc_size = sizeof(struct hal_tx_msdu_metadata);
46 htt_desc_size_aligned = ALIGN(htt_desc_size, HTT_META_DATA_ALIGNMENT);
47
48 desc_ext = ath12k_dp_metadata_align_skb(skb, htt_desc_size_aligned);
49 if (!desc_ext)
50 return -ENOMEM;
51
52 desc_ext->info0 = le32_encode_bits(1, HAL_TX_MSDU_METADATA_INFO0_ENCRYPT_FLAG) |
53 le32_encode_bits(0, HAL_TX_MSDU_METADATA_INFO0_ENCRYPT_TYPE) |
54 le32_encode_bits(1,
55 HAL_TX_MSDU_METADATA_INFO0_HOST_TX_DESC_POOL);
56
57 return 0;
58 }
59
60 /* TODO: Remove the export once this file is built with wifi7 ko */
ath12k_wifi7_dp_tx(struct ath12k_pdev_dp * dp_pdev,struct ath12k_link_vif * arvif,struct sk_buff * skb,bool gsn_valid,int mcbc_gsn,bool is_mcast)61 int ath12k_wifi7_dp_tx(struct ath12k_pdev_dp *dp_pdev, struct ath12k_link_vif *arvif,
62 struct sk_buff *skb, bool gsn_valid, int mcbc_gsn,
63 bool is_mcast)
64 {
65 struct ath12k_dp *dp = dp_pdev->dp;
66 struct ath12k_hal *hal = dp->hal;
67 struct ath12k_base *ab = dp->ab;
68 struct hal_tx_info ti = {};
69 struct ath12k_tx_desc_info *tx_desc;
70 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
71 struct ath12k_skb_cb *skb_cb = ATH12K_SKB_CB(skb);
72 struct hal_tcl_data_cmd *hal_tcl_desc;
73 struct hal_tx_msdu_ext_desc *msg;
74 struct sk_buff *skb_ext_desc = NULL;
75 struct hal_srng *tcl_ring;
76 struct ieee80211_hdr *hdr = (void *)skb->data;
77 struct ath12k_vif *ahvif = arvif->ahvif;
78 struct ath12k_dp_vif *dp_vif = &ahvif->dp_vif;
79 struct ath12k_dp_link_vif *dp_link_vif;
80 struct dp_tx_ring *tx_ring;
81 u8 pool_id;
82 u8 hal_ring_id;
83 int ret;
84 u8 ring_selector, ring_map = 0;
85 bool tcl_ring_retry;
86 bool msdu_ext_desc = false;
87 bool add_htt_metadata = false;
88 u32 iova_mask = dp->hw_params->iova_mask;
89 bool is_diff_encap = false;
90 bool is_null_frame = false;
91
92 if (test_bit(ATH12K_FLAG_CRASH_FLUSH, &ab->dev_flags))
93 return -ESHUTDOWN;
94
95 if (!(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) &&
96 !ieee80211_is_data(hdr->frame_control))
97 return -EOPNOTSUPP;
98
99 pool_id = skb_get_queue_mapping(skb) & (ATH12K_HW_MAX_QUEUES - 1);
100
101 /* Let the default ring selection be based on current processor
102 * number, where one of the 3 tcl rings are selected based on
103 * the smp_processor_id(). In case that ring
104 * is full/busy, we resort to other available rings.
105 * If all rings are full, we drop the packet.
106 * TODO: Add throttling logic when all rings are full
107 */
108 ring_selector = dp->hw_params->hw_ops->get_ring_selector(skb);
109
110 tcl_ring_sel:
111 tcl_ring_retry = false;
112 ti.ring_id = ring_selector % dp->hw_params->max_tx_ring;
113
114 ring_map |= BIT(ti.ring_id);
115 ti.rbm_id = hal->tcl_to_wbm_rbm_map[ti.ring_id].rbm_id;
116
117 tx_ring = &dp->tx_ring[ti.ring_id];
118
119 tx_desc = ath12k_dp_tx_assign_buffer(dp, pool_id);
120 if (!tx_desc)
121 return -ENOMEM;
122
123 dp_link_vif = ath12k_dp_vif_to_dp_link_vif(&ahvif->dp_vif, arvif->link_id);
124
125 ti.bank_id = dp_link_vif->bank_id;
126 ti.meta_data_flags = dp_link_vif->tcl_metadata;
127
128 if (dp_vif->tx_encap_type == HAL_TCL_ENCAP_TYPE_RAW &&
129 test_bit(ATH12K_FLAG_HW_CRYPTO_DISABLED, &ab->dev_flags)) {
130 if (skb_cb->flags & ATH12K_SKB_CIPHER_SET) {
131 ti.encrypt_type =
132 ath12k_dp_tx_get_encrypt_type(skb_cb->cipher);
133
134 if (ieee80211_has_protected(hdr->frame_control))
135 skb_put(skb, IEEE80211_CCMP_MIC_LEN);
136 } else {
137 ti.encrypt_type = HAL_ENCRYPT_TYPE_OPEN;
138 }
139
140 msdu_ext_desc = true;
141 }
142
143 if (gsn_valid) {
144 /* Reset and Initialize meta_data_flags with Global Sequence
145 * Number (GSN) info.
146 */
147 ti.meta_data_flags =
148 u32_encode_bits(HTT_TCL_META_DATA_TYPE_GLOBAL_SEQ_NUM,
149 HTT_TCL_META_DATA_TYPE) |
150 u32_encode_bits(mcbc_gsn, HTT_TCL_META_DATA_GLOBAL_SEQ_NUM);
151 }
152
153 ti.encap_type = ath12k_dp_tx_get_encap_type(ab, skb);
154 ti.addr_search_flags = dp_link_vif->hal_addr_search_flags;
155 ti.search_type = dp_link_vif->search_type;
156 ti.type = HAL_TCL_DESC_TYPE_BUFFER;
157 ti.pkt_offset = 0;
158 ti.lmac_id = dp_link_vif->lmac_id;
159
160 ti.vdev_id = dp_link_vif->vdev_id;
161 if (gsn_valid)
162 ti.vdev_id += HTT_TX_MLO_MCAST_HOST_REINJECT_BASE_VDEV_ID;
163
164 ti.bss_ast_hash = dp_link_vif->ast_hash;
165 ti.bss_ast_idx = dp_link_vif->ast_idx;
166 ti.dscp_tid_tbl_idx = 0;
167
168 if (skb->ip_summed == CHECKSUM_PARTIAL &&
169 ti.encap_type != HAL_TCL_ENCAP_TYPE_RAW) {
170 ti.flags0 |= u32_encode_bits(1, HAL_TCL_DATA_CMD_INFO2_IP4_CKSUM_EN) |
171 u32_encode_bits(1, HAL_TCL_DATA_CMD_INFO2_UDP4_CKSUM_EN) |
172 u32_encode_bits(1, HAL_TCL_DATA_CMD_INFO2_UDP6_CKSUM_EN) |
173 u32_encode_bits(1, HAL_TCL_DATA_CMD_INFO2_TCP4_CKSUM_EN) |
174 u32_encode_bits(1, HAL_TCL_DATA_CMD_INFO2_TCP6_CKSUM_EN);
175 }
176
177 ti.flags1 |= u32_encode_bits(1, HAL_TCL_DATA_CMD_INFO3_TID_OVERWRITE);
178
179 ti.tid = ath12k_dp_tx_get_tid(skb);
180
181 switch (ti.encap_type) {
182 case HAL_TCL_ENCAP_TYPE_NATIVE_WIFI:
183 is_null_frame = ieee80211_is_nullfunc(hdr->frame_control);
184 if (ahvif->vif->offload_flags & IEEE80211_OFFLOAD_ENCAP_ENABLED) {
185 if (skb->protocol == cpu_to_be16(ETH_P_PAE) || is_null_frame)
186 is_diff_encap = true;
187
188 /* Firmware expects msdu ext descriptor for nwifi/raw packets
189 * received in ETH mode. Without this, observed tx fail for
190 * Multicast packets in ETH mode.
191 */
192 msdu_ext_desc = true;
193 } else {
194 ath12k_dp_tx_encap_nwifi(skb);
195 }
196 break;
197 case HAL_TCL_ENCAP_TYPE_RAW:
198 if (!test_bit(ATH12K_FLAG_RAW_MODE, &ab->dev_flags)) {
199 ret = -EINVAL;
200 goto fail_remove_tx_buf;
201 }
202 break;
203 case HAL_TCL_ENCAP_TYPE_ETHERNET:
204 /* no need to encap */
205 break;
206 case HAL_TCL_ENCAP_TYPE_802_3:
207 default:
208 /* TODO: Take care of other encap modes as well */
209 ret = -EINVAL;
210 atomic_inc(&dp->device_stats.tx_err.misc_fail);
211 goto fail_remove_tx_buf;
212 }
213
214 if (iova_mask &&
215 (unsigned long)skb->data & iova_mask) {
216 ret = ath12k_dp_tx_align_payload(dp, &skb);
217 if (ret) {
218 ath12k_warn(ab, "failed to align TX buffer %d\n", ret);
219 /* don't bail out, give original buffer
220 * a chance even unaligned.
221 */
222 goto map;
223 }
224
225 /* hdr is pointing to a wrong place after alignment,
226 * so refresh it for later use.
227 */
228 hdr = (void *)skb->data;
229 }
230 map:
231 ti.paddr = dma_map_single(dp->dev, skb->data, skb->len, DMA_TO_DEVICE);
232 if (dma_mapping_error(dp->dev, ti.paddr)) {
233 atomic_inc(&dp->device_stats.tx_err.misc_fail);
234 ath12k_warn(ab, "failed to DMA map data Tx buffer\n");
235 ret = -ENOMEM;
236 goto fail_remove_tx_buf;
237 }
238
239 if ((!test_bit(ATH12K_FLAG_HW_CRYPTO_DISABLED, &ab->dev_flags) &&
240 !(skb_cb->flags & ATH12K_SKB_HW_80211_ENCAP) &&
241 !(skb_cb->flags & ATH12K_SKB_CIPHER_SET) &&
242 ieee80211_has_protected(hdr->frame_control)) ||
243 is_diff_encap) {
244 /* Firmware is not expecting meta data for qos null
245 * nwifi packet received in ETH encap mode.
246 */
247 if (is_null_frame && msdu_ext_desc)
248 goto skip_htt_meta;
249
250 /* Add metadata for sw encrypted vlan group traffic
251 * and EAPOL nwifi packet received in ETH encap mode.
252 */
253 add_htt_metadata = true;
254 msdu_ext_desc = true;
255 ti.meta_data_flags |= HTT_TCL_META_DATA_VALID_HTT;
256 skip_htt_meta:
257 ti.flags0 |= u32_encode_bits(1, HAL_TCL_DATA_CMD_INFO2_TO_FW);
258 ti.encap_type = HAL_TCL_ENCAP_TYPE_RAW;
259 ti.encrypt_type = HAL_ENCRYPT_TYPE_OPEN;
260 }
261
262 tx_desc->skb = skb;
263 tx_desc->mac_id = dp_link_vif->pdev_idx;
264 ti.desc_id = tx_desc->desc_id;
265 ti.data_len = skb->len;
266 skb_cb->paddr = ti.paddr;
267
268 if (msdu_ext_desc) {
269 skb_ext_desc = dev_alloc_skb(sizeof(struct hal_tx_msdu_ext_desc));
270 if (!skb_ext_desc) {
271 ret = -ENOMEM;
272 goto fail_unmap_dma;
273 }
274
275 skb_put(skb_ext_desc, sizeof(struct hal_tx_msdu_ext_desc));
276 memset(skb_ext_desc->data, 0, skb_ext_desc->len);
277
278 msg = (struct hal_tx_msdu_ext_desc *)skb_ext_desc->data;
279 ath12k_wifi7_hal_tx_cmd_ext_desc_setup(ab, msg, &ti);
280
281 if (add_htt_metadata) {
282 ret = ath12k_wifi7_dp_prepare_htt_metadata(skb_ext_desc);
283 if (ret < 0) {
284 ath12k_dbg(ab, ATH12K_DBG_DP_TX,
285 "Failed to add HTT meta data, dropping packet\n");
286 goto fail_free_ext_skb;
287 }
288 }
289
290 ti.paddr = dma_map_single(dp->dev, skb_ext_desc->data,
291 skb_ext_desc->len, DMA_TO_DEVICE);
292 ret = dma_mapping_error(dp->dev, ti.paddr);
293 if (ret)
294 goto fail_free_ext_skb;
295
296 ti.data_len = skb_ext_desc->len;
297 ti.type = HAL_TCL_DESC_TYPE_EXT_DESC;
298
299 skb_cb->paddr_ext_desc = ti.paddr;
300 tx_desc->skb_ext_desc = skb_ext_desc;
301 }
302
303 hal_ring_id = tx_ring->tcl_data_ring.ring_id;
304 tcl_ring = &hal->srng_list[hal_ring_id];
305
306 spin_lock_bh(&tcl_ring->lock);
307
308 ath12k_hal_srng_access_begin(ab, tcl_ring);
309
310 hal_tcl_desc = ath12k_hal_srng_src_get_next_entry(ab, tcl_ring);
311 if (!hal_tcl_desc) {
312 /* NOTE: It is highly unlikely we'll be running out of tcl_ring
313 * desc because the desc is directly enqueued onto hw queue.
314 */
315 ath12k_hal_srng_access_end(ab, tcl_ring);
316 dp->device_stats.tx_err.desc_na[ti.ring_id]++;
317 spin_unlock_bh(&tcl_ring->lock);
318 ret = -ENOMEM;
319
320 /* Checking for available tcl descriptors in another ring in
321 * case of failure due to full tcl ring now, is better than
322 * checking this ring earlier for each pkt tx.
323 * Restart ring selection if some rings are not checked yet.
324 */
325 if (ring_map != (BIT(dp->hw_params->max_tx_ring) - 1) &&
326 dp->hw_params->tcl_ring_retry) {
327 tcl_ring_retry = true;
328 ring_selector++;
329 }
330
331 goto fail_unmap_dma_ext;
332 }
333
334 spin_lock_bh(&arvif->link_stats_lock);
335 arvif->link_stats.tx_encap_type[ti.encap_type]++;
336 arvif->link_stats.tx_encrypt_type[ti.encrypt_type]++;
337 arvif->link_stats.tx_desc_type[ti.type]++;
338
339 if (is_mcast)
340 arvif->link_stats.tx_bcast_mcast++;
341 else
342 arvif->link_stats.tx_enqueued++;
343 spin_unlock_bh(&arvif->link_stats_lock);
344
345 dp->device_stats.tx_enqueued[ti.ring_id]++;
346
347 ath12k_wifi7_hal_tx_cmd_desc_setup(ab, hal_tcl_desc, &ti);
348
349 ath12k_hal_srng_access_end(ab, tcl_ring);
350
351 spin_unlock_bh(&tcl_ring->lock);
352
353 ath12k_dbg_dump(ab, ATH12K_DBG_DP_TX, NULL, "dp tx msdu: ",
354 skb->data, skb->len);
355
356 atomic_inc(&dp_pdev->num_tx_pending);
357
358 return 0;
359
360 fail_unmap_dma_ext:
361 if (skb_cb->paddr_ext_desc)
362 dma_unmap_single(dp->dev, skb_cb->paddr_ext_desc,
363 skb_ext_desc->len,
364 DMA_TO_DEVICE);
365 fail_free_ext_skb:
366 kfree_skb(skb_ext_desc);
367
368 fail_unmap_dma:
369 dma_unmap_single(dp->dev, ti.paddr, ti.data_len, DMA_TO_DEVICE);
370
371 fail_remove_tx_buf:
372 ath12k_dp_tx_release_txbuf(dp, tx_desc, pool_id);
373
374 spin_lock_bh(&arvif->link_stats_lock);
375 arvif->link_stats.tx_dropped++;
376 spin_unlock_bh(&arvif->link_stats_lock);
377
378 if (tcl_ring_retry)
379 goto tcl_ring_sel;
380
381 return ret;
382 }
383
384 static void
ath12k_dp_tx_htt_tx_complete_buf(struct ath12k_dp * dp,struct ath12k_tx_desc_params * desc_params,struct dp_tx_ring * tx_ring,struct ath12k_dp_htt_wbm_tx_status * ts,u16 peer_id)385 ath12k_dp_tx_htt_tx_complete_buf(struct ath12k_dp *dp,
386 struct ath12k_tx_desc_params *desc_params,
387 struct dp_tx_ring *tx_ring,
388 struct ath12k_dp_htt_wbm_tx_status *ts,
389 u16 peer_id)
390 {
391 struct ath12k_base *ab = dp->ab;
392 struct ieee80211_tx_info *info;
393 struct ath12k_link_vif *arvif;
394 struct ath12k_skb_cb *skb_cb;
395 struct ieee80211_vif *vif;
396 struct ath12k_vif *ahvif;
397 struct sk_buff *msdu = desc_params->skb;
398 s32 noise_floor;
399 struct ieee80211_tx_status status = {};
400 struct ath12k_dp_link_peer *peer;
401 struct ath12k_pdev_dp *dp_pdev;
402 u8 pdev_id;
403
404 skb_cb = ATH12K_SKB_CB(msdu);
405 info = IEEE80211_SKB_CB(msdu);
406
407 pdev_id = ath12k_hw_mac_id_to_pdev_id(dp->hw_params, desc_params->mac_id);
408
409 rcu_read_lock();
410 dp_pdev = ath12k_dp_to_pdev_dp(dp, pdev_id);
411 if (!dp_pdev) {
412 rcu_read_unlock();
413 return;
414 }
415
416 dp->device_stats.tx_completed[tx_ring->tcl_data_ring_id]++;
417
418 if (atomic_dec_and_test(&dp_pdev->num_tx_pending))
419 wake_up(&dp_pdev->tx_empty_waitq);
420
421 dma_unmap_single(dp->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
422 if (skb_cb->paddr_ext_desc) {
423 dma_unmap_single(dp->dev, skb_cb->paddr_ext_desc,
424 desc_params->skb_ext_desc->len, DMA_TO_DEVICE);
425 dev_kfree_skb_any(desc_params->skb_ext_desc);
426 }
427
428 vif = skb_cb->vif;
429 if (vif) {
430 ahvif = ath12k_vif_to_ahvif(vif);
431 arvif = rcu_dereference(ahvif->link[skb_cb->link_id]);
432 if (arvif) {
433 spin_lock_bh(&arvif->link_stats_lock);
434 arvif->link_stats.tx_completed++;
435 spin_unlock_bh(&arvif->link_stats_lock);
436 }
437 }
438
439 memset(&info->status, 0, sizeof(info->status));
440
441 if (ts->acked) {
442 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
443 info->flags |= IEEE80211_TX_STAT_ACK;
444 info->status.ack_signal = ts->ack_rssi;
445
446 if (!test_bit(WMI_TLV_SERVICE_HW_DB2DBM_CONVERSION_SUPPORT,
447 ab->wmi_ab.svc_map)) {
448 struct ath12k *ar = ath12k_pdev_dp_to_ar(dp_pdev);
449
450 spin_lock_bh(&ar->data_lock);
451 noise_floor = ath12k_pdev_get_noise_floor(ar);
452 spin_unlock_bh(&ar->data_lock);
453
454 info->status.ack_signal += noise_floor;
455 }
456
457 info->status.flags = IEEE80211_TX_STATUS_ACK_SIGNAL_VALID;
458 } else {
459 info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
460 }
461 }
462
463 peer = ath12k_dp_link_peer_find_by_peerid(dp_pdev, peer_id);
464 if (!peer || !peer->sta) {
465 ath12k_dbg(ab, ATH12K_DBG_DATA,
466 "dp_tx: failed to find the peer with peer_id %d\n", peer_id);
467 ieee80211_free_txskb(ath12k_pdev_dp_to_hw(dp_pdev), msdu);
468 goto exit;
469 } else {
470 status.sta = peer->sta;
471 }
472
473 status.info = info;
474 status.skb = msdu;
475 ieee80211_tx_status_ext(ath12k_pdev_dp_to_hw(dp_pdev), &status);
476 exit:
477 rcu_read_unlock();
478 }
479
480 static void
ath12k_dp_tx_process_htt_tx_complete(struct ath12k_dp * dp,void * desc,struct dp_tx_ring * tx_ring,struct ath12k_tx_desc_params * desc_params)481 ath12k_dp_tx_process_htt_tx_complete(struct ath12k_dp *dp, void *desc,
482 struct dp_tx_ring *tx_ring,
483 struct ath12k_tx_desc_params *desc_params)
484 {
485 struct htt_tx_wbm_completion *status_desc;
486 struct ath12k_dp_htt_wbm_tx_status ts = {};
487 enum hal_wbm_htt_tx_comp_status wbm_status;
488 u16 peer_id;
489
490 status_desc = desc;
491
492 wbm_status = le32_get_bits(status_desc->info0,
493 HTT_TX_WBM_COMP_INFO0_STATUS);
494 dp->device_stats.fw_tx_status[wbm_status]++;
495
496 switch (wbm_status) {
497 case HAL_WBM_REL_HTT_TX_COMP_STATUS_OK:
498 ts.acked = (wbm_status == HAL_WBM_REL_HTT_TX_COMP_STATUS_OK);
499 ts.ack_rssi = le32_get_bits(status_desc->info2,
500 HTT_TX_WBM_COMP_INFO2_ACK_RSSI);
501
502 peer_id = le32_get_bits(((struct hal_wbm_completion_ring_tx *)desc)->
503 info3, HAL_WBM_COMPL_TX_INFO3_PEER_ID);
504
505 ath12k_dp_tx_htt_tx_complete_buf(dp, desc_params, tx_ring, &ts, peer_id);
506 break;
507 case HAL_WBM_REL_HTT_TX_COMP_STATUS_DROP:
508 case HAL_WBM_REL_HTT_TX_COMP_STATUS_TTL:
509 case HAL_WBM_REL_HTT_TX_COMP_STATUS_REINJ:
510 case HAL_WBM_REL_HTT_TX_COMP_STATUS_INSPECT:
511 case HAL_WBM_REL_HTT_TX_COMP_STATUS_VDEVID_MISMATCH:
512 ath12k_dp_tx_free_txbuf(dp, tx_ring, desc_params);
513 break;
514 case HAL_WBM_REL_HTT_TX_COMP_STATUS_MEC_NOTIFY:
515 /* This event is to be handled only when the driver decides to
516 * use WDS offload functionality.
517 */
518 break;
519 default:
520 ath12k_warn(dp->ab, "Unknown htt wbm tx status %d\n", wbm_status);
521 break;
522 }
523 }
524
ath12k_wifi7_dp_tx_update_txcompl(struct ath12k_pdev_dp * dp_pdev,struct hal_tx_status * ts)525 static void ath12k_wifi7_dp_tx_update_txcompl(struct ath12k_pdev_dp *dp_pdev,
526 struct hal_tx_status *ts)
527 {
528 struct ath12k_dp *dp = dp_pdev->dp;
529 struct ath12k_dp_link_peer *peer;
530 struct ath12k_link_sta *arsta;
531 struct rate_info txrate = {};
532 struct ieee80211_sta *sta;
533 struct ath12k_sta *ahsta;
534 u16 rate, ru_tones;
535 u8 rate_idx = 0;
536 int ret;
537
538 peer = ath12k_dp_link_peer_find_by_peerid(dp_pdev, ts->peer_id);
539 if (!peer || !peer->sta) {
540 ath12k_dbg(dp->ab, ATH12K_DBG_DP_TX,
541 "failed to find the peer by id %u\n", ts->peer_id);
542 return;
543 }
544
545 spin_lock_bh(&dp->dp_lock);
546
547 sta = peer->sta;
548 ahsta = ath12k_sta_to_ahsta(sta);
549 arsta = &ahsta->deflink;
550
551 spin_unlock_bh(&dp->dp_lock);
552
553 /* This is to prefer choose the real NSS value arsta->last_txrate.nss,
554 * if it is invalid, then choose the NSS value while assoc.
555 */
556 if (peer->last_txrate.nss)
557 txrate.nss = peer->last_txrate.nss;
558 else
559 txrate.nss = arsta->peer_nss;
560
561 switch (ts->pkt_type) {
562 case HAL_TX_RATE_STATS_PKT_TYPE_11A:
563 case HAL_TX_RATE_STATS_PKT_TYPE_11B:
564 ret = ath12k_mac_hw_ratecode_to_legacy_rate(ts->mcs,
565 ts->pkt_type,
566 &rate_idx,
567 &rate);
568 if (ret < 0) {
569 ath12k_warn(dp->ab, "Invalid tx legacy rate %d\n", ret);
570 return;
571 }
572
573 txrate.legacy = rate;
574 break;
575 case HAL_TX_RATE_STATS_PKT_TYPE_11N:
576 if (ts->mcs > ATH12K_HT_MCS_MAX) {
577 ath12k_warn(dp->ab, "Invalid HT mcs index %d\n", ts->mcs);
578 return;
579 }
580
581 if (txrate.nss != 0)
582 txrate.mcs = ts->mcs + 8 * (txrate.nss - 1);
583
584 txrate.flags = RATE_INFO_FLAGS_MCS;
585
586 if (ts->sgi)
587 txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
588 break;
589 case HAL_TX_RATE_STATS_PKT_TYPE_11AC:
590 if (ts->mcs > ATH12K_VHT_MCS_MAX) {
591 ath12k_warn(dp->ab, "Invalid VHT mcs index %d\n", ts->mcs);
592 return;
593 }
594
595 txrate.mcs = ts->mcs;
596 txrate.flags = RATE_INFO_FLAGS_VHT_MCS;
597
598 if (ts->sgi)
599 txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
600 break;
601 case HAL_TX_RATE_STATS_PKT_TYPE_11AX:
602 if (ts->mcs > ATH12K_HE_MCS_MAX) {
603 ath12k_warn(dp->ab, "Invalid HE mcs index %d\n", ts->mcs);
604 return;
605 }
606
607 txrate.mcs = ts->mcs;
608 txrate.flags = RATE_INFO_FLAGS_HE_MCS;
609 txrate.he_gi = ath12k_he_gi_to_nl80211_he_gi(ts->sgi);
610 break;
611 case HAL_TX_RATE_STATS_PKT_TYPE_11BE:
612 if (ts->mcs > ATH12K_EHT_MCS_MAX) {
613 ath12k_warn(dp->ab, "Invalid EHT mcs index %d\n", ts->mcs);
614 return;
615 }
616
617 txrate.mcs = ts->mcs;
618 txrate.flags = RATE_INFO_FLAGS_EHT_MCS;
619 txrate.eht_gi = ath12k_mac_eht_gi_to_nl80211_eht_gi(ts->sgi);
620 break;
621 default:
622 ath12k_warn(dp->ab, "Invalid tx pkt type: %d\n", ts->pkt_type);
623 return;
624 }
625
626 txrate.bw = ath12k_mac_bw_to_mac80211_bw(ts->bw);
627
628 if (ts->ofdma && ts->pkt_type == HAL_TX_RATE_STATS_PKT_TYPE_11AX) {
629 txrate.bw = RATE_INFO_BW_HE_RU;
630 ru_tones = ath12k_mac_he_convert_tones_to_ru_tones(ts->tones);
631 txrate.he_ru_alloc =
632 ath12k_he_ru_tones_to_nl80211_he_ru_alloc(ru_tones);
633 }
634
635 if (ts->ofdma && ts->pkt_type == HAL_TX_RATE_STATS_PKT_TYPE_11BE) {
636 txrate.bw = RATE_INFO_BW_EHT_RU;
637 txrate.eht_ru_alloc =
638 ath12k_mac_eht_ru_tones_to_nl80211_eht_ru_alloc(ts->tones);
639 }
640
641 spin_lock_bh(&dp->dp_lock);
642 peer->txrate = txrate;
643 spin_unlock_bh(&dp->dp_lock);
644 }
645
ath12k_wifi7_dp_tx_complete_msdu(struct ath12k_pdev_dp * dp_pdev,struct ath12k_tx_desc_params * desc_params,struct hal_tx_status * ts,int ring)646 static void ath12k_wifi7_dp_tx_complete_msdu(struct ath12k_pdev_dp *dp_pdev,
647 struct ath12k_tx_desc_params *desc_params,
648 struct hal_tx_status *ts,
649 int ring)
650 {
651 struct ath12k_dp *dp = dp_pdev->dp;
652 struct ath12k_base *ab = dp->ab;
653 struct ieee80211_tx_info *info;
654 struct ath12k_link_vif *arvif;
655 struct ath12k_skb_cb *skb_cb;
656 struct ieee80211_vif *vif;
657 struct ath12k_vif *ahvif;
658 struct sk_buff *msdu = desc_params->skb;
659 s32 noise_floor;
660 struct ieee80211_tx_status status = {};
661 struct ieee80211_rate_status status_rate = {};
662 struct ath12k_dp_link_peer *peer;
663 struct rate_info rate;
664
665 if (WARN_ON_ONCE(ts->buf_rel_source != HAL_WBM_REL_SRC_MODULE_TQM)) {
666 /* Must not happen */
667 return;
668 }
669
670 skb_cb = ATH12K_SKB_CB(msdu);
671 dp->device_stats.tx_completed[ring]++;
672
673 dma_unmap_single(dp->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
674 if (skb_cb->paddr_ext_desc) {
675 dma_unmap_single(dp->dev, skb_cb->paddr_ext_desc,
676 desc_params->skb_ext_desc->len, DMA_TO_DEVICE);
677 dev_kfree_skb_any(desc_params->skb_ext_desc);
678 }
679
680 rcu_read_lock();
681
682 if (!rcu_dereference(ab->pdevs_active[dp_pdev->mac_id])) {
683 ieee80211_free_txskb(ath12k_pdev_dp_to_hw(dp_pdev), msdu);
684 goto exit;
685 }
686
687 if (!skb_cb->vif) {
688 ieee80211_free_txskb(ath12k_pdev_dp_to_hw(dp_pdev), msdu);
689 goto exit;
690 }
691
692 vif = skb_cb->vif;
693 if (vif) {
694 ahvif = ath12k_vif_to_ahvif(vif);
695 arvif = rcu_dereference(ahvif->link[skb_cb->link_id]);
696 if (arvif) {
697 spin_lock_bh(&arvif->link_stats_lock);
698 arvif->link_stats.tx_completed++;
699 spin_unlock_bh(&arvif->link_stats_lock);
700 }
701 }
702
703 info = IEEE80211_SKB_CB(msdu);
704 memset(&info->status, 0, sizeof(info->status));
705
706 /* skip tx rate update from ieee80211_status*/
707 info->status.rates[0].idx = -1;
708
709 switch (ts->status) {
710 case HAL_WBM_TQM_REL_REASON_FRAME_ACKED:
711 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
712 info->flags |= IEEE80211_TX_STAT_ACK;
713 info->status.ack_signal = ts->ack_rssi;
714
715 if (!test_bit(WMI_TLV_SERVICE_HW_DB2DBM_CONVERSION_SUPPORT,
716 ab->wmi_ab.svc_map)) {
717 struct ath12k *ar = ath12k_pdev_dp_to_ar(dp_pdev);
718
719 spin_lock_bh(&ar->data_lock);
720 noise_floor = ath12k_pdev_get_noise_floor(ar);
721 spin_unlock_bh(&ar->data_lock);
722
723 info->status.ack_signal += noise_floor;
724 }
725
726 info->status.flags = IEEE80211_TX_STATUS_ACK_SIGNAL_VALID;
727 }
728 break;
729 case HAL_WBM_TQM_REL_REASON_CMD_REMOVE_TX:
730 if (info->flags & IEEE80211_TX_CTL_NO_ACK) {
731 info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
732 break;
733 }
734 fallthrough;
735 case HAL_WBM_TQM_REL_REASON_CMD_REMOVE_MPDU:
736 case HAL_WBM_TQM_REL_REASON_DROP_THRESHOLD:
737 case HAL_WBM_TQM_REL_REASON_CMD_REMOVE_AGED_FRAMES:
738 /* The failure status is due to internal firmware tx failure
739 * hence drop the frame; do not update the status of frame to
740 * the upper layer
741 */
742 ieee80211_free_txskb(ath12k_pdev_dp_to_hw(dp_pdev), msdu);
743 goto exit;
744 default:
745 ath12k_dbg(ab, ATH12K_DBG_DP_TX, "tx frame is not acked status %d\n",
746 ts->status);
747 break;
748 }
749
750 /* NOTE: Tx rate status reporting. Tx completion status does not have
751 * necessary information (for example nss) to build the tx rate.
752 * Might end up reporting it out-of-band from HTT stats.
753 */
754
755 ath12k_wifi7_dp_tx_update_txcompl(dp_pdev, ts);
756
757 peer = ath12k_dp_link_peer_find_by_peerid(dp_pdev, ts->peer_id);
758 if (!peer || !peer->sta) {
759 ath12k_err(ab,
760 "dp_tx: failed to find the peer with peer_id %d\n",
761 ts->peer_id);
762 ieee80211_free_txskb(ath12k_pdev_dp_to_hw(dp_pdev), msdu);
763 goto exit;
764 }
765
766 status.sta = peer->sta;
767 status.info = info;
768 status.skb = msdu;
769 rate = peer->last_txrate;
770
771 status_rate.rate_idx = rate;
772 status_rate.try_count = 1;
773
774 status.rates = &status_rate;
775 status.n_rates = 1;
776 ieee80211_tx_status_ext(ath12k_pdev_dp_to_hw(dp_pdev), &status);
777
778 exit:
779 rcu_read_unlock();
780 }
781
782 static void
ath12k_wifi7_dp_tx_status_parse(struct ath12k_dp * dp,struct hal_wbm_completion_ring_tx * desc,struct hal_tx_status * ts)783 ath12k_wifi7_dp_tx_status_parse(struct ath12k_dp *dp,
784 struct hal_wbm_completion_ring_tx *desc,
785 struct hal_tx_status *ts)
786 {
787 u32 info0 = le32_to_cpu(desc->rate_stats.info0);
788
789 ts->buf_rel_source =
790 le32_get_bits(desc->info0, HAL_WBM_COMPL_TX_INFO0_REL_SRC_MODULE);
791 if (ts->buf_rel_source != HAL_WBM_REL_SRC_MODULE_FW &&
792 ts->buf_rel_source != HAL_WBM_REL_SRC_MODULE_TQM)
793 return;
794
795 if (ts->buf_rel_source == HAL_WBM_REL_SRC_MODULE_FW)
796 return;
797
798 ts->status = le32_get_bits(desc->info0,
799 HAL_WBM_COMPL_TX_INFO0_TQM_RELEASE_REASON);
800
801 ts->ppdu_id = le32_get_bits(desc->info1,
802 HAL_WBM_COMPL_TX_INFO1_TQM_STATUS_NUMBER);
803
804 ts->peer_id = le32_get_bits(desc->info3, HAL_WBM_COMPL_TX_INFO3_PEER_ID);
805
806 ts->ack_rssi = le32_get_bits(desc->info2,
807 HAL_WBM_COMPL_TX_INFO2_ACK_FRAME_RSSI);
808
809 if (info0 & HAL_TX_RATE_STATS_INFO0_VALID) {
810 ts->pkt_type = u32_get_bits(info0, HAL_TX_RATE_STATS_INFO0_PKT_TYPE);
811 ts->mcs = u32_get_bits(info0, HAL_TX_RATE_STATS_INFO0_MCS);
812 ts->sgi = u32_get_bits(info0, HAL_TX_RATE_STATS_INFO0_SGI);
813 ts->bw = u32_get_bits(info0, HAL_TX_RATE_STATS_INFO0_BW);
814 ts->tones = u32_get_bits(info0, HAL_TX_RATE_STATS_INFO0_TONES_IN_RU);
815 ts->ofdma = u32_get_bits(info0, HAL_TX_RATE_STATS_INFO0_OFDMA_TX);
816 }
817 }
818
ath12k_wifi7_dp_tx_completion_handler(struct ath12k_dp * dp,int ring_id)819 void ath12k_wifi7_dp_tx_completion_handler(struct ath12k_dp *dp, int ring_id)
820 {
821 struct ath12k_base *ab = dp->ab;
822 struct ath12k_pdev_dp *dp_pdev;
823 int hal_ring_id = dp->tx_ring[ring_id].tcl_comp_ring.ring_id;
824 struct hal_srng *status_ring = &dp->hal->srng_list[hal_ring_id];
825 struct ath12k_tx_desc_info *tx_desc = NULL;
826 struct hal_tx_status ts = {};
827 struct ath12k_tx_desc_params desc_params;
828 struct dp_tx_ring *tx_ring = &dp->tx_ring[ring_id];
829 struct hal_wbm_release_ring *desc;
830 u8 pdev_idx;
831 u64 desc_va;
832 enum hal_wbm_rel_src_module buf_rel_source;
833 enum hal_wbm_tqm_rel_reason rel_status;
834
835 spin_lock_bh(&status_ring->lock);
836
837 ath12k_hal_srng_access_begin(ab, status_ring);
838
839 while (ATH12K_TX_COMPL_NEXT(ab, tx_ring->tx_status_head) !=
840 tx_ring->tx_status_tail) {
841 desc = ath12k_hal_srng_dst_get_next_entry(ab, status_ring);
842 if (!desc)
843 break;
844
845 memcpy(&tx_ring->tx_status[tx_ring->tx_status_head],
846 desc, sizeof(*desc));
847 tx_ring->tx_status_head =
848 ATH12K_TX_COMPL_NEXT(ab, tx_ring->tx_status_head);
849 }
850
851 if (ath12k_hal_srng_dst_peek(ab, status_ring) &&
852 (ATH12K_TX_COMPL_NEXT(ab, tx_ring->tx_status_head) ==
853 tx_ring->tx_status_tail)) {
854 /* TODO: Process pending tx_status messages when kfifo_is_full() */
855 ath12k_warn(ab, "Unable to process some of the tx_status ring desc because status_fifo is full\n");
856 }
857
858 ath12k_hal_srng_access_end(ab, status_ring);
859
860 spin_unlock_bh(&status_ring->lock);
861
862 while (ATH12K_TX_COMPL_NEXT(ab, tx_ring->tx_status_tail) !=
863 tx_ring->tx_status_head) {
864 struct hal_wbm_completion_ring_tx *tx_status;
865 u32 desc_id;
866
867 tx_ring->tx_status_tail =
868 ATH12K_TX_COMPL_NEXT(ab, tx_ring->tx_status_tail);
869 tx_status = &tx_ring->tx_status[tx_ring->tx_status_tail];
870 ath12k_wifi7_dp_tx_status_parse(dp, tx_status, &ts);
871
872 if (le32_get_bits(tx_status->info0, HAL_WBM_COMPL_TX_INFO0_CC_DONE)) {
873 /* HW done cookie conversion */
874 desc_va = ((u64)le32_to_cpu(tx_status->buf_va_hi) << 32 |
875 le32_to_cpu(tx_status->buf_va_lo));
876 tx_desc = (struct ath12k_tx_desc_info *)((unsigned long)desc_va);
877 } else {
878 /* SW does cookie conversion to VA */
879 desc_id = le32_get_bits(tx_status->buf_va_hi,
880 BUFFER_ADDR_INFO1_SW_COOKIE);
881
882 tx_desc = ath12k_dp_get_tx_desc(dp, desc_id);
883 }
884 if (!tx_desc) {
885 ath12k_warn(ab, "unable to retrieve tx_desc!");
886 continue;
887 }
888
889 desc_params.mac_id = tx_desc->mac_id;
890 desc_params.skb = tx_desc->skb;
891 desc_params.skb_ext_desc = tx_desc->skb_ext_desc;
892
893 /* Find the HAL_WBM_RELEASE_INFO0_REL_SRC_MODULE value */
894 buf_rel_source = le32_get_bits(tx_status->info0,
895 HAL_WBM_RELEASE_INFO0_REL_SRC_MODULE);
896 dp->device_stats.tx_wbm_rel_source[buf_rel_source]++;
897
898 rel_status = le32_get_bits(tx_status->info0,
899 HAL_WBM_COMPL_TX_INFO0_TQM_RELEASE_REASON);
900 dp->device_stats.tqm_rel_reason[rel_status]++;
901
902 /* Release descriptor as soon as extracting necessary info
903 * to reduce contention
904 */
905 ath12k_dp_tx_release_txbuf(dp, tx_desc, tx_desc->pool_id);
906 if (ts.buf_rel_source == HAL_WBM_REL_SRC_MODULE_FW) {
907 ath12k_dp_tx_process_htt_tx_complete(dp, (void *)tx_status,
908 tx_ring, &desc_params);
909 continue;
910 }
911
912 pdev_idx = ath12k_hw_mac_id_to_pdev_id(dp->hw_params, desc_params.mac_id);
913
914 rcu_read_lock();
915
916 dp_pdev = ath12k_dp_to_pdev_dp(dp, pdev_idx);
917 if (!dp_pdev) {
918 rcu_read_unlock();
919 continue;
920 }
921
922 if (atomic_dec_and_test(&dp_pdev->num_tx_pending))
923 wake_up(&dp_pdev->tx_empty_waitq);
924
925 ath12k_wifi7_dp_tx_complete_msdu(dp_pdev, &desc_params, &ts,
926 tx_ring->tcl_data_ring_id);
927 rcu_read_unlock();
928 }
929 }
930
ath12k_wifi7_dp_tx_get_vdev_bank_config(struct ath12k_base * ab,struct ath12k_link_vif * arvif)931 u32 ath12k_wifi7_dp_tx_get_vdev_bank_config(struct ath12k_base *ab,
932 struct ath12k_link_vif *arvif)
933 {
934 u32 bank_config = 0;
935 u8 link_id = arvif->link_id;
936 struct ath12k_vif *ahvif = arvif->ahvif;
937 struct ath12k_dp_vif *dp_vif = &ahvif->dp_vif;
938 struct ath12k_dp_link_vif *dp_link_vif;
939
940 dp_link_vif = ath12k_dp_vif_to_dp_link_vif(dp_vif, link_id);
941
942 /* Only valid for raw frames with HW crypto enabled.
943 * With SW crypto, mac80211 sets key per packet
944 */
945 if (dp_vif->tx_encap_type == HAL_TCL_ENCAP_TYPE_RAW &&
946 test_bit(ATH12K_FLAG_HW_CRYPTO_DISABLED, &ab->dev_flags))
947 bank_config |=
948 u32_encode_bits(ath12k_dp_tx_get_encrypt_type(dp_vif->key_cipher),
949 HAL_TX_BANK_CONFIG_ENCRYPT_TYPE);
950
951 bank_config |= u32_encode_bits(dp_vif->tx_encap_type,
952 HAL_TX_BANK_CONFIG_ENCAP_TYPE);
953 bank_config |= u32_encode_bits(0, HAL_TX_BANK_CONFIG_SRC_BUFFER_SWAP) |
954 u32_encode_bits(0, HAL_TX_BANK_CONFIG_LINK_META_SWAP) |
955 u32_encode_bits(0, HAL_TX_BANK_CONFIG_EPD);
956
957 /* only valid if idx_lookup_override is not set in tcl_data_cmd */
958 if (ahvif->vdev_type == WMI_VDEV_TYPE_STA)
959 bank_config |= u32_encode_bits(1, HAL_TX_BANK_CONFIG_INDEX_LOOKUP_EN);
960 else
961 bank_config |= u32_encode_bits(0, HAL_TX_BANK_CONFIG_INDEX_LOOKUP_EN);
962
963 bank_config |= u32_encode_bits(dp_link_vif->hal_addr_search_flags &
964 HAL_TX_ADDRX_EN,
965 HAL_TX_BANK_CONFIG_ADDRX_EN) |
966 u32_encode_bits(!!(dp_link_vif->hal_addr_search_flags &
967 HAL_TX_ADDRY_EN),
968 HAL_TX_BANK_CONFIG_ADDRY_EN);
969
970 bank_config |= u32_encode_bits(ieee80211_vif_is_mesh(ahvif->vif) ? 3 : 0,
971 HAL_TX_BANK_CONFIG_MESH_EN) |
972 u32_encode_bits(dp_link_vif->vdev_id_check_en,
973 HAL_TX_BANK_CONFIG_VDEV_ID_CHECK_EN);
974
975 bank_config |= u32_encode_bits(0, HAL_TX_BANK_CONFIG_DSCP_TIP_MAP_ID);
976
977 return bank_config;
978 }
979