1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 *
4 * (c) Copyright 2008, RealTEK Technologies Inc. All Rights Reserved.
5 *
6 * Module: r819xusb_cmdpkt.c
7 * (RTL8190 TX/RX command packet handler Source C File)
8 *
9 * Note: The module is responsible for handling TX and RX command packet.
10 * 1. TX : Send set and query configuration command packet.
11 * 2. RX : Receive tx feedback, beacon state, query configuration
12 * command packet.
13 *
14 * Function:
15 *
16 * Export:
17 *
18 * Abbrev:
19 *
20 * History:
21 *
22 * Date Who Remark
23 * 05/06/2008 amy Create initial version porting from
24 * windows driver.
25 *
26 ******************************************************************************/
27 #include "r8192U.h"
28 #include "r819xU_cmdpkt.h"
29
SendTxCommandPacket(struct net_device * dev,void * pData,u32 DataLen)30 rt_status SendTxCommandPacket(struct net_device *dev, void *pData, u32 DataLen)
31 {
32 struct r8192_priv *priv = ieee80211_priv(dev);
33 struct sk_buff *skb;
34 struct cb_desc *tcb_desc;
35
36 /* Get TCB and local buffer from common pool.
37 * (It is shared by CmdQ, MgntQ, and USB coalesce DataQ)
38 */
39 skb = dev_alloc_skb(USB_HWDESC_HEADER_LEN + DataLen + 4);
40 if (!skb)
41 return RT_STATUS_FAILURE;
42 memcpy((unsigned char *)(skb->cb), &dev, sizeof(dev));
43 tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
44 tcb_desc->queue_index = TXCMD_QUEUE;
45 tcb_desc->bCmdOrInit = DESC_PACKET_TYPE_NORMAL;
46 tcb_desc->bLastIniPkt = 0;
47 skb_reserve(skb, USB_HWDESC_HEADER_LEN);
48 skb_put_data(skb, pData, DataLen);
49 tcb_desc->txbuf_size = (u16)DataLen;
50
51 if (!priv->ieee80211->check_nic_enough_desc(dev, tcb_desc->queue_index) ||
52 (!skb_queue_empty(&priv->ieee80211->skb_waitQ[tcb_desc->queue_index])) ||
53 (priv->ieee80211->queue_stop)) {
54 RT_TRACE(COMP_FIRMWARE, "=== NULL packet ======> tx full!\n");
55 skb_queue_tail(&priv->ieee80211->skb_waitQ[tcb_desc->queue_index], skb);
56 } else {
57 priv->ieee80211->softmac_hard_start_xmit(skb, dev);
58 }
59
60 return RT_STATUS_SUCCESS;
61 }
62
cmpk_count_txstatistic(struct net_device * dev,struct cmd_pkt_tx_feedback * pstx_fb)63 static void cmpk_count_txstatistic(struct net_device *dev, struct cmd_pkt_tx_feedback *pstx_fb)
64 {
65 struct r8192_priv *priv = ieee80211_priv(dev);
66 #ifdef ENABLE_PS
67 RT_RF_POWER_STATE rtState;
68
69 pAdapter->HalFunc.GetHwRegHandler(pAdapter, HW_VAR_RF_STATE,
70 (pu1Byte)(&rtState));
71
72 /* When RF is off, we should not count the packet for hw/sw synchronize
73 * reason, ie. there may be a duration while sw switch is changed and
74 * hw switch is being changed.
75 */
76 if (rtState == eRfOff)
77 return;
78 #endif
79
80 #ifdef TODO
81 if (pAdapter->bInHctTest)
82 return;
83 #endif
84 /* We can not know the packet length and transmit type:
85 * broadcast or uni or multicast. So the relative statistics
86 * must be collected in tx feedback info.
87 */
88 if (pstx_fb->tok) {
89 priv->stats.txfeedbackok++;
90 priv->stats.txoktotal++;
91 priv->stats.txokbytestotal += pstx_fb->pkt_length;
92 priv->stats.txokinperiod++;
93
94 /* We can not make sure broadcast/multicast or unicast mode. */
95 if (pstx_fb->pkt_type == PACKET_MULTICAST) {
96 priv->stats.txmulticast++;
97 priv->stats.txbytesmulticast += pstx_fb->pkt_length;
98 } else if (pstx_fb->pkt_type == PACKET_BROADCAST) {
99 priv->stats.txbroadcast++;
100 priv->stats.txbytesbroadcast += pstx_fb->pkt_length;
101 } else {
102 priv->stats.txunicast++;
103 priv->stats.txbytesunicast += pstx_fb->pkt_length;
104 }
105 } else {
106 priv->stats.txfeedbackfail++;
107 priv->stats.txerrtotal++;
108 priv->stats.txerrbytestotal += pstx_fb->pkt_length;
109
110 /* We can not make sure broadcast/multicast or unicast mode. */
111 if (pstx_fb->pkt_type == PACKET_MULTICAST)
112 priv->stats.txerrmulticast++;
113 else if (pstx_fb->pkt_type == PACKET_BROADCAST)
114 priv->stats.txerrbroadcast++;
115 else
116 priv->stats.txerrunicast++;
117 }
118
119 priv->stats.txretrycount += pstx_fb->retry_cnt;
120 priv->stats.txfeedbackretry += pstx_fb->retry_cnt;
121 }
122
123 /*-----------------------------------------------------------------------------
124 * Function: cmpk_handle_tx_feedback()
125 *
126 * Overview: The function is responsible for extract the message inside TX
127 * feedbck message from firmware. It will contain dedicated info in
128 * ws-06-0063-rtl8190-command-packet-specification.
129 * Please refer to chapter "TX Feedback Element".
130 * We have to read 20 bytes in the command packet.
131 *
132 * Input: struct net_device *dev
133 * u8 *pmsg - Msg Ptr of the command packet.
134 *
135 * Output: NONE
136 *
137 * Return: NONE
138 *
139 * Revised History:
140 * When Who Remark
141 * 05/08/2008 amy Create Version 0 porting from windows code.
142 *
143 *---------------------------------------------------------------------------
144 */
cmpk_handle_tx_feedback(struct net_device * dev,u8 * pmsg)145 static void cmpk_handle_tx_feedback(struct net_device *dev, u8 *pmsg)
146 {
147 struct r8192_priv *priv = ieee80211_priv(dev);
148 struct cmd_pkt_tx_feedback rx_tx_fb;
149
150 priv->stats.txfeedback++;
151
152 /* 1. Extract TX feedback info from RFD to temp structure buffer. */
153 /* It seems that FW use big endian(MIPS) and DRV use little endian in
154 * windows OS. So we have to read the content byte by byte or transfer
155 * endian type before copy the message copy.
156 */
157 /* Use pointer to transfer structure memory. */
158 memcpy((u8 *)&rx_tx_fb, pmsg, sizeof(struct cmd_pkt_tx_feedback));
159 /* 2. Use tx feedback info to count TX statistics. */
160 cmpk_count_txstatistic(dev, &rx_tx_fb);
161 /* Comment previous method for TX statistic function. */
162 /* Collect info TX feedback packet to fill TCB. */
163 /* We can not know the packet length and transmit type: broadcast or uni
164 * or multicast.
165 */
166 }
167
cmdpkt_beacontimerinterrupt_819xusb(struct net_device * dev)168 static void cmdpkt_beacontimerinterrupt_819xusb(struct net_device *dev)
169 {
170 struct r8192_priv *priv = ieee80211_priv(dev);
171 u16 tx_rate;
172
173 /* 87B have to S/W beacon for DTM encryption_cmn. */
174 if (priv->ieee80211->current_network.mode == IEEE_A ||
175 priv->ieee80211->current_network.mode == IEEE_N_5G ||
176 (priv->ieee80211->current_network.mode == IEEE_N_24G &&
177 (!priv->ieee80211->pHTInfo->bCurSuppCCK))) {
178 tx_rate = 60;
179 DMESG("send beacon frame tx rate is 6Mbpm\n");
180 } else {
181 tx_rate = 10;
182 DMESG("send beacon frame tx rate is 1Mbpm\n");
183 }
184
185 rtl819xusb_beacon_tx(dev, tx_rate); /* HW Beacon */
186 }
187
188 /*-----------------------------------------------------------------------------
189 * Function: cmpk_handle_interrupt_status()
190 *
191 * Overview: The function is responsible for extract the message from
192 * firmware. It will contain dedicated info in
193 * ws-07-0063-v06-rtl819x-command-packet-specification-070315.doc.
194 * Please refer to chapter "Interrupt Status Element".
195 *
196 * Input: struct net_device *dev
197 * u8 *pmsg - Message Pointer of the command packet.
198 *
199 * Output: NONE
200 *
201 * Return: NONE
202 *
203 * Revised History:
204 * When Who Remark
205 * 05/12/2008 amy Add this for rtl8192 porting from windows code.
206 *
207 *---------------------------------------------------------------------------
208 */
cmpk_handle_interrupt_status(struct net_device * dev,u8 * pmsg)209 static void cmpk_handle_interrupt_status(struct net_device *dev, u8 *pmsg)
210 {
211 struct cmd_pkt_interrupt_status rx_intr_status; /* */
212 struct r8192_priv *priv = ieee80211_priv(dev);
213
214 DMESG("---> cmpk_Handle_Interrupt_Status()\n");
215
216 /* 1. Extract TX feedback info from RFD to temp structure buffer. */
217 /* It seems that FW use big endian(MIPS) and DRV use little endian in
218 * windows OS. So we have to read the content byte by byte or transfer
219 * endian type before copy the message copy.
220 */
221 rx_intr_status.length = pmsg[1];
222 if (rx_intr_status.length != (sizeof(struct cmd_pkt_interrupt_status) - 2)) {
223 DMESG("cmpk_Handle_Interrupt_Status: wrong length!\n");
224 return;
225 }
226
227 /* Statistics of beacon for ad-hoc mode. */
228 if (priv->ieee80211->iw_mode == IW_MODE_ADHOC) {
229 /* 2 maybe need endian transform? */
230 rx_intr_status.interrupt_status = *((u32 *)(pmsg + 4));
231
232 DMESG("interrupt status = 0x%x\n",
233 rx_intr_status.interrupt_status);
234
235 if (rx_intr_status.interrupt_status & ISR_TX_BCN_OK) {
236 priv->ieee80211->bibsscoordinator = true;
237 priv->stats.txbeaconokint++;
238 } else if (rx_intr_status.interrupt_status & ISR_TX_BCN_ERR) {
239 priv->ieee80211->bibsscoordinator = false;
240 priv->stats.txbeaconerr++;
241 }
242
243 if (rx_intr_status.interrupt_status & ISR_BCN_TIMER_INTR)
244 cmdpkt_beacontimerinterrupt_819xusb(dev);
245 }
246
247 /* Other information in interrupt status we need? */
248
249 DMESG("<---- cmpk_handle_interrupt_status()\n");
250 }
251
252 /*-----------------------------------------------------------------------------
253 * Function: cmpk_count_tx_status()
254 *
255 * Overview: Count aggregated tx status from firmwar of one type rx command
256 * packet element id = RX_TX_STATUS.
257 *
258 * Input: NONE
259 *
260 * Output: NONE
261 *
262 * Return: NONE
263 *
264 * Revised History:
265 * When Who Remark
266 * 05/12/2008 amy Create Version 0 porting from windows code.
267 *
268 *---------------------------------------------------------------------------
269 */
cmpk_count_tx_status(struct net_device * dev,cmpk_tx_status_t * pstx_status)270 static void cmpk_count_tx_status(struct net_device *dev,
271 cmpk_tx_status_t *pstx_status)
272 {
273 struct r8192_priv *priv = ieee80211_priv(dev);
274
275 #ifdef ENABLE_PS
276
277 RT_RF_POWER_STATE rtstate;
278
279 pAdapter->HalFunc.GetHwRegHandler(pAdapter, HW_VAR_RF_STATE,
280 (pu1Byte)(&rtState));
281
282 /* When RF is off, we should not count the packet for hw/sw synchronize
283 * reason, ie. there may be a duration while sw switch is changed and
284 * hw switch is being changed.
285 */
286 if (rtState == eRfOff)
287 return;
288 #endif
289
290 priv->stats.txfeedbackok += pstx_status->txok;
291 priv->stats.txoktotal += pstx_status->txok;
292
293 priv->stats.txfeedbackfail += pstx_status->txfail;
294 priv->stats.txerrtotal += pstx_status->txfail;
295
296 priv->stats.txretrycount += pstx_status->txretry;
297 priv->stats.txfeedbackretry += pstx_status->txretry;
298
299 priv->stats.txmulticast += pstx_status->txmcok;
300 priv->stats.txbroadcast += pstx_status->txbcok;
301 priv->stats.txunicast += pstx_status->txucok;
302
303 priv->stats.txerrmulticast += pstx_status->txmcfail;
304 priv->stats.txerrbroadcast += pstx_status->txbcfail;
305 priv->stats.txerrunicast += pstx_status->txucfail;
306
307 priv->stats.txbytesmulticast += pstx_status->txmclength;
308 priv->stats.txbytesbroadcast += pstx_status->txbclength;
309 priv->stats.txbytesunicast += pstx_status->txuclength;
310
311 priv->stats.last_packet_rate = pstx_status->rate;
312 }
313
314 /*-----------------------------------------------------------------------------
315 * Function: cmpk_handle_tx_status()
316 *
317 * Overview: Firmware add a new tx feedback status to reduce rx command
318 * packet buffer operation load.
319 *
320 * Input: NONE
321 *
322 * Output: NONE
323 *
324 * Return: NONE
325 *
326 * Revised History:
327 * When Who Remark
328 * 05/12/2008 amy Create Version 0 porting from windows code.
329 *
330 *---------------------------------------------------------------------------
331 */
cmpk_handle_tx_status(struct net_device * dev,u8 * pmsg)332 static void cmpk_handle_tx_status(struct net_device *dev, u8 *pmsg)
333 {
334 cmpk_tx_status_t rx_tx_sts;
335
336 memcpy((void *)&rx_tx_sts, (void *)pmsg, sizeof(cmpk_tx_status_t));
337 /* 2. Use tx feedback info to count TX statistics. */
338 cmpk_count_tx_status(dev, &rx_tx_sts);
339 }
340
341 /*-----------------------------------------------------------------------------
342 * Function: cmpk_handle_tx_rate_history()
343 *
344 * Overview: Firmware add a new tx rate history
345 *
346 * Input: NONE
347 *
348 * Output: NONE
349 *
350 * Return: NONE
351 *
352 * Revised History:
353 * When Who Remark
354 * 05/12/2008 amy Create Version 0 porting from windows code.
355 *
356 *---------------------------------------------------------------------------
357 */
cmpk_handle_tx_rate_history(struct net_device * dev,u8 * pmsg)358 static void cmpk_handle_tx_rate_history(struct net_device *dev, u8 *pmsg)
359 {
360 cmpk_tx_rahis_t *ptxrate;
361 u8 i, j;
362 u16 length = sizeof(cmpk_tx_rahis_t);
363 u32 *ptemp;
364 struct r8192_priv *priv = ieee80211_priv(dev);
365
366 #ifdef ENABLE_PS
367 pAdapter->HalFunc.GetHwRegHandler(pAdapter, HW_VAR_RF_STATE,
368 (pu1Byte)(&rtState));
369
370 /* When RF is off, we should not count the packet for hw/sw synchronize
371 * reason, ie. there may be a duration while sw switch is changed and
372 * hw switch is being changed.
373 */
374 if (rtState == eRfOff)
375 return;
376 #endif
377
378 ptemp = (u32 *)pmsg;
379
380 /* Do endian transfer to word alignment(16 bits) for windows system.
381 * You must do different endian transfer for linux and MAC OS
382 */
383 for (i = 0; i < (length/4); i++) {
384 u16 temp1, temp2;
385
386 temp1 = ptemp[i] & 0x0000FFFF;
387 temp2 = ptemp[i] >> 16;
388 ptemp[i] = (temp1 << 16) | temp2;
389 }
390
391 ptxrate = (cmpk_tx_rahis_t *)pmsg;
392
393 if (!ptxrate)
394 return;
395
396 for (i = 0; i < 16; i++) {
397 /* Collect CCK rate packet num */
398 if (i < 4)
399 priv->stats.txrate.cck[i] += ptxrate->cck[i];
400
401 /* Collect OFDM rate packet num */
402 if (i < 8)
403 priv->stats.txrate.ofdm[i] += ptxrate->ofdm[i];
404
405 for (j = 0; j < 4; j++)
406 priv->stats.txrate.ht_mcs[j][i] += ptxrate->ht_mcs[j][i];
407 }
408 }
409
410 /*-----------------------------------------------------------------------------
411 * Function: cmpk_message_handle_rx()
412 *
413 * Overview: In the function, we will capture different RX command packet
414 * info. Every RX command packet element has different message
415 * length and meaning in content. We only support three type of RX
416 * command packet now. Please refer to document
417 * ws-06-0063-rtl8190-command-packet-specification.
418 *
419 * Input: NONE
420 *
421 * Output: NONE
422 *
423 * Return: NONE
424 *
425 * Revised History:
426 * When Who Remark
427 * 05/06/2008 amy Create Version 0 porting from windows code.
428 *
429 *---------------------------------------------------------------------------
430 */
cmpk_message_handle_rx(struct net_device * dev,struct ieee80211_rx_stats * pstats)431 u32 cmpk_message_handle_rx(struct net_device *dev,
432 struct ieee80211_rx_stats *pstats)
433 {
434 int total_length;
435 u8 cmd_length, exe_cnt = 0;
436 u8 element_id;
437 u8 *pcmd_buff;
438
439 /* 0. Check inpt arguments. It is a command queue message or
440 * pointer is null.
441 */
442 if (!pstats)
443 return 0; /* This is not a command packet. */
444
445 /* 1. Read received command packet message length from RFD. */
446 total_length = pstats->Length;
447
448 /* 2. Read virtual address from RFD. */
449 pcmd_buff = pstats->virtual_address;
450
451 /* 3. Read command packet element id and length. */
452 element_id = pcmd_buff[0];
453
454 /* 4. Check every received command packet content according to different
455 * element type. Because FW may aggregate RX command packet to
456 * minimize transmit time between DRV and FW.
457 */
458 /* Add a counter to prevent the lock in the loop from being held too
459 * long
460 */
461 while (total_length > 0 && exe_cnt++ < 100) {
462 /* We support aggregation of different cmd in the same packet */
463 element_id = pcmd_buff[0];
464
465 switch (element_id) {
466 case RX_TX_FEEDBACK:
467 cmpk_handle_tx_feedback(dev, pcmd_buff);
468 cmd_length = CMPK_RX_TX_FB_SIZE;
469 break;
470
471 case RX_INTERRUPT_STATUS:
472 cmpk_handle_interrupt_status(dev, pcmd_buff);
473 cmd_length = sizeof(struct cmd_pkt_interrupt_status);
474 break;
475
476 case BOTH_QUERY_CONFIG:
477 cmd_length = CMPK_BOTH_QUERY_CONFIG_SIZE;
478 break;
479
480 case RX_TX_STATUS:
481 cmpk_handle_tx_status(dev, pcmd_buff);
482 cmd_length = CMPK_RX_TX_STS_SIZE;
483 break;
484
485 case RX_TX_PER_PKT_FEEDBACK:
486 /* You must at lease add a switch case element here,
487 * Otherwise, we will jump to default case.
488 */
489 cmd_length = CMPK_RX_TX_FB_SIZE;
490 break;
491
492 case RX_TX_RATE_HISTORY:
493 cmpk_handle_tx_rate_history(dev, pcmd_buff);
494 cmd_length = CMPK_TX_RAHIS_SIZE;
495 break;
496
497 default:
498
499 RT_TRACE(COMP_ERR, "---->%s():unknown CMD Element\n",
500 __func__);
501 return 1; /* This is a command packet. */
502 }
503
504 total_length -= cmd_length;
505 pcmd_buff += cmd_length;
506 }
507 return 1; /* This is a command packet. */
508 }
509
