1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
4 * (c) Copyright 2008, RealTEK Technologies Inc. All Rights Reserved.
6 * Module: r819xusb_cmdpkt.c
7 * (RTL8190 TX/RX command packet handler Source C File)
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
23 * 05/06/2008 amy Create initial version porting from
26 ******************************************************************************/
28 #include "r819xU_cmdpkt.h"
30 rt_status SendTxCommandPacket(struct net_device *dev, void *pData, u32 DataLen)
32 struct r8192_priv *priv = ieee80211_priv(dev);
34 struct cb_desc *tcb_desc;
36 /* Get TCB and local buffer from common pool.
37 * (It is shared by CmdQ, MgntQ, and USB coalesce DataQ)
39 skb = dev_alloc_skb(USB_HWDESC_HEADER_LEN + DataLen + 4);
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;
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);
57 priv->ieee80211->softmac_hard_start_xmit(skb, dev);
60 return RT_STATUS_SUCCESS;
63 static void cmpk_count_txstatistic(struct net_device *dev, struct cmd_pkt_tx_feedback *pstx_fb)
65 struct r8192_priv *priv = ieee80211_priv(dev);
67 RT_RF_POWER_STATE rtState;
69 pAdapter->HalFunc.GetHwRegHandler(pAdapter, HW_VAR_RF_STATE,
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.
76 if (rtState == eRfOff)
81 if (pAdapter->bInHctTest)
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.
89 priv->stats.txfeedbackok++;
90 priv->stats.txoktotal++;
91 priv->stats.txokbytestotal += pstx_fb->pkt_length;
92 priv->stats.txokinperiod++;
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;
102 priv->stats.txunicast++;
103 priv->stats.txbytesunicast += pstx_fb->pkt_length;
106 priv->stats.txfeedbackfail++;
107 priv->stats.txerrtotal++;
108 priv->stats.txerrbytestotal += pstx_fb->pkt_length;
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++;
116 priv->stats.txerrunicast++;
119 priv->stats.txretrycount += pstx_fb->retry_cnt;
120 priv->stats.txfeedbackretry += pstx_fb->retry_cnt;
123 /*-----------------------------------------------------------------------------
124 * Function: cmpk_handle_tx_feedback()
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.
132 * Input: struct net_device *dev
133 * u8 *pmsg - Msg Ptr of the command packet.
141 * 05/08/2008 amy Create Version 0 porting from windows code.
143 *---------------------------------------------------------------------------
145 static void cmpk_handle_tx_feedback(struct net_device *dev, u8 *pmsg)
147 struct r8192_priv *priv = ieee80211_priv(dev);
148 struct cmd_pkt_tx_feedback rx_tx_fb;
150 priv->stats.txfeedback++;
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.
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
168 static void cmdpkt_beacontimerinterrupt_819xusb(struct net_device *dev)
170 struct r8192_priv *priv = ieee80211_priv(dev);
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))) {
179 DMESG("send beacon frame tx rate is 6Mbpm\n");
182 DMESG("send beacon frame tx rate is 1Mbpm\n");
185 rtl819xusb_beacon_tx(dev, tx_rate); /* HW Beacon */
188 /*-----------------------------------------------------------------------------
189 * Function: cmpk_handle_interrupt_status()
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".
196 * Input: struct net_device *dev
197 * u8 *pmsg - Message Pointer of the command packet.
205 * 05/12/2008 amy Add this for rtl8192 porting from windows code.
207 *---------------------------------------------------------------------------
209 static void cmpk_handle_interrupt_status(struct net_device *dev, u8 *pmsg)
211 struct cmd_pkt_interrupt_status rx_intr_status; /* */
212 struct r8192_priv *priv = ieee80211_priv(dev);
214 DMESG("---> cmpk_Handle_Interrupt_Status()\n");
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.
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");
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));
232 DMESG("interrupt status = 0x%x\n",
233 rx_intr_status.interrupt_status);
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++;
243 if (rx_intr_status.interrupt_status & ISR_BCN_TIMER_INTR)
244 cmdpkt_beacontimerinterrupt_819xusb(dev);
247 /* Other information in interrupt status we need? */
249 DMESG("<---- cmpk_handle_interrupt_status()\n");
252 /*-----------------------------------------------------------------------------
253 * Function: cmpk_count_tx_status()
255 * Overview: Count aggregated tx status from firmwar of one type rx command
256 * packet element id = RX_TX_STATUS.
266 * 05/12/2008 amy Create Version 0 porting from windows code.
268 *---------------------------------------------------------------------------
270 static void cmpk_count_tx_status(struct net_device *dev,
271 cmpk_tx_status_t *pstx_status)
273 struct r8192_priv *priv = ieee80211_priv(dev);
277 RT_RF_POWER_STATE rtstate;
279 pAdapter->HalFunc.GetHwRegHandler(pAdapter, HW_VAR_RF_STATE,
280 (pu1Byte)(&rtState));
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.
286 if (rtState == eRfOff)
290 priv->stats.txfeedbackok += pstx_status->txok;
291 priv->stats.txoktotal += pstx_status->txok;
293 priv->stats.txfeedbackfail += pstx_status->txfail;
294 priv->stats.txerrtotal += pstx_status->txfail;
296 priv->stats.txretrycount += pstx_status->txretry;
297 priv->stats.txfeedbackretry += pstx_status->txretry;
299 priv->stats.txmulticast += pstx_status->txmcok;
300 priv->stats.txbroadcast += pstx_status->txbcok;
301 priv->stats.txunicast += pstx_status->txucok;
303 priv->stats.txerrmulticast += pstx_status->txmcfail;
304 priv->stats.txerrbroadcast += pstx_status->txbcfail;
305 priv->stats.txerrunicast += pstx_status->txucfail;
307 priv->stats.txbytesmulticast += pstx_status->txmclength;
308 priv->stats.txbytesbroadcast += pstx_status->txbclength;
309 priv->stats.txbytesunicast += pstx_status->txuclength;
311 priv->stats.last_packet_rate = pstx_status->rate;
314 /*-----------------------------------------------------------------------------
315 * Function: cmpk_handle_tx_status()
317 * Overview: Firmware add a new tx feedback status to reduce rx command
318 * packet buffer operation load.
328 * 05/12/2008 amy Create Version 0 porting from windows code.
330 *---------------------------------------------------------------------------
332 static void cmpk_handle_tx_status(struct net_device *dev, u8 *pmsg)
334 cmpk_tx_status_t rx_tx_sts;
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);
341 /*-----------------------------------------------------------------------------
342 * Function: cmpk_handle_tx_rate_history()
344 * Overview: Firmware add a new tx rate history
354 * 05/12/2008 amy Create Version 0 porting from windows code.
356 *---------------------------------------------------------------------------
358 static void cmpk_handle_tx_rate_history(struct net_device *dev, u8 *pmsg)
360 cmpk_tx_rahis_t *ptxrate;
362 u16 length = sizeof(cmpk_tx_rahis_t);
364 struct r8192_priv *priv = ieee80211_priv(dev);
367 pAdapter->HalFunc.GetHwRegHandler(pAdapter, HW_VAR_RF_STATE,
368 (pu1Byte)(&rtState));
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.
374 if (rtState == eRfOff)
380 /* Do endian transfer to word alignment(16 bits) for windows system.
381 * You must do different endian transfer for linux and MAC OS
383 for (i = 0; i < (length/4); i++) {
386 temp1 = ptemp[i] & 0x0000FFFF;
387 temp2 = ptemp[i] >> 16;
388 ptemp[i] = (temp1 << 16) | temp2;
391 ptxrate = (cmpk_tx_rahis_t *)pmsg;
396 for (i = 0; i < 16; i++) {
397 /* Collect CCK rate packet num */
399 priv->stats.txrate.cck[i] += ptxrate->cck[i];
401 /* Collect OFDM rate packet num */
403 priv->stats.txrate.ofdm[i] += ptxrate->ofdm[i];
405 for (j = 0; j < 4; j++)
406 priv->stats.txrate.ht_mcs[j][i] += ptxrate->ht_mcs[j][i];
410 /*-----------------------------------------------------------------------------
411 * Function: cmpk_message_handle_rx()
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.
427 * 05/06/2008 amy Create Version 0 porting from windows code.
429 *---------------------------------------------------------------------------
431 u32 cmpk_message_handle_rx(struct net_device *dev,
432 struct ieee80211_rx_stats *pstats)
435 u8 cmd_length, exe_cnt = 0;
439 /* 0. Check inpt arguments. It is a command queue message or
443 return 0; /* This is not a command packet. */
445 /* 1. Read received command packet message length from RFD. */
446 total_length = pstats->Length;
448 /* 2. Read virtual address from RFD. */
449 pcmd_buff = pstats->virtual_address;
451 /* 3. Read command packet element id and length. */
452 element_id = pcmd_buff[0];
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.
458 /* Add a counter to prevent the lock in the loop from being held too
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];
465 switch (element_id) {
467 cmpk_handle_tx_feedback(dev, pcmd_buff);
468 cmd_length = CMPK_RX_TX_FB_SIZE;
471 case RX_INTERRUPT_STATUS:
472 cmpk_handle_interrupt_status(dev, pcmd_buff);
473 cmd_length = sizeof(struct cmd_pkt_interrupt_status);
476 case BOTH_QUERY_CONFIG:
477 cmd_length = CMPK_BOTH_QUERY_CONFIG_SIZE;
481 cmpk_handle_tx_status(dev, pcmd_buff);
482 cmd_length = CMPK_RX_TX_STS_SIZE;
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.
489 cmd_length = CMPK_RX_TX_FB_SIZE;
492 case RX_TX_RATE_HISTORY:
493 cmpk_handle_tx_rate_history(dev, pcmd_buff);
494 cmd_length = CMPK_TX_RAHIS_SIZE;
499 RT_TRACE(COMP_ERR, "---->%s():unknown CMD Element\n",
501 return 1; /* This is a command packet. */
504 total_length -= cmd_length;
505 pcmd_buff += cmd_length;
507 return 1; /* This is a command packet. */