1 /* 2 * Copyright (c) 2010-2011 Atheros Communications Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 #include <linux/export.h> 17 #include "hw.h" 18 #include "ar9003_mac.h" 19 #include "ar9003_mci.h" 20 21 static void ar9003_hw_rx_enable(struct ath_hw *hw) 22 { 23 REG_WRITE(hw, AR_CR, 0); 24 } 25 26 static void 27 ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) 28 { 29 struct ar9003_txc *ads = ds; 30 int checksum = 0; 31 u32 val, ctl12, ctl17; 32 u8 desc_len; 33 34 desc_len = ((AR_SREV_9462(ah) || AR_SREV_9565(ah)) ? 0x18 : 0x17); 35 36 val = (ATHEROS_VENDOR_ID << AR_DescId_S) | 37 (1 << AR_TxRxDesc_S) | 38 (1 << AR_CtrlStat_S) | 39 (i->qcu << AR_TxQcuNum_S) | desc_len; 40 41 checksum += val; 42 WRITE_ONCE(ads->info, val); 43 44 checksum += i->link; 45 WRITE_ONCE(ads->link, i->link); 46 47 checksum += i->buf_addr[0]; 48 WRITE_ONCE(ads->data0, i->buf_addr[0]); 49 checksum += i->buf_addr[1]; 50 WRITE_ONCE(ads->data1, i->buf_addr[1]); 51 checksum += i->buf_addr[2]; 52 WRITE_ONCE(ads->data2, i->buf_addr[2]); 53 checksum += i->buf_addr[3]; 54 WRITE_ONCE(ads->data3, i->buf_addr[3]); 55 56 checksum += (val = (i->buf_len[0] << AR_BufLen_S) & AR_BufLen); 57 WRITE_ONCE(ads->ctl3, val); 58 checksum += (val = (i->buf_len[1] << AR_BufLen_S) & AR_BufLen); 59 WRITE_ONCE(ads->ctl5, val); 60 checksum += (val = (i->buf_len[2] << AR_BufLen_S) & AR_BufLen); 61 WRITE_ONCE(ads->ctl7, val); 62 checksum += (val = (i->buf_len[3] << AR_BufLen_S) & AR_BufLen); 63 WRITE_ONCE(ads->ctl9, val); 64 65 checksum = (u16) (((checksum & 0xffff) + (checksum >> 16)) & 0xffff); 66 WRITE_ONCE(ads->ctl10, checksum); 67 68 if (i->is_first || i->is_last) { 69 WRITE_ONCE(ads->ctl13, set11nTries(i->rates, 0) 70 | set11nTries(i->rates, 1) 71 | set11nTries(i->rates, 2) 72 | set11nTries(i->rates, 3) 73 | (i->dur_update ? AR_DurUpdateEna : 0) 74 | SM(0, AR_BurstDur)); 75 76 WRITE_ONCE(ads->ctl14, set11nRate(i->rates, 0) 77 | set11nRate(i->rates, 1) 78 | set11nRate(i->rates, 2) 79 | set11nRate(i->rates, 3)); 80 } else { 81 WRITE_ONCE(ads->ctl13, 0); 82 WRITE_ONCE(ads->ctl14, 0); 83 } 84 85 ads->ctl20 = 0; 86 ads->ctl21 = 0; 87 ads->ctl22 = 0; 88 ads->ctl23 = 0; 89 90 ctl17 = SM(i->keytype, AR_EncrType); 91 if (!i->is_first) { 92 WRITE_ONCE(ads->ctl11, 0); 93 WRITE_ONCE(ads->ctl12, i->is_last ? 0 : AR_TxMore); 94 WRITE_ONCE(ads->ctl15, 0); 95 WRITE_ONCE(ads->ctl16, 0); 96 WRITE_ONCE(ads->ctl17, ctl17); 97 WRITE_ONCE(ads->ctl18, 0); 98 WRITE_ONCE(ads->ctl19, 0); 99 return; 100 } 101 102 WRITE_ONCE(ads->ctl11, (i->pkt_len & AR_FrameLen) 103 | (i->flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0) 104 | SM(i->txpower[0], AR_XmitPower0) 105 | (i->flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0) 106 | (i->keyix != ATH9K_TXKEYIX_INVALID ? AR_DestIdxValid : 0) 107 | (i->flags & ATH9K_TXDESC_LOWRXCHAIN ? AR_LowRxChain : 0) 108 | (i->flags & ATH9K_TXDESC_CLRDMASK ? AR_ClrDestMask : 0) 109 | (i->flags & ATH9K_TXDESC_RTSENA ? AR_RTSEnable : 110 (i->flags & ATH9K_TXDESC_CTSENA ? AR_CTSEnable : 0))); 111 112 ctl12 = (i->keyix != ATH9K_TXKEYIX_INVALID ? 113 SM(i->keyix, AR_DestIdx) : 0) 114 | SM(i->type, AR_FrameType) 115 | (i->flags & ATH9K_TXDESC_NOACK ? AR_NoAck : 0) 116 | (i->flags & ATH9K_TXDESC_EXT_ONLY ? AR_ExtOnly : 0) 117 | (i->flags & ATH9K_TXDESC_EXT_AND_CTL ? AR_ExtAndCtl : 0); 118 119 ctl17 |= (i->flags & ATH9K_TXDESC_LDPC ? AR_LDPC : 0); 120 switch (i->aggr) { 121 case AGGR_BUF_FIRST: 122 ctl17 |= SM(i->aggr_len, AR_AggrLen); 123 fallthrough; 124 case AGGR_BUF_MIDDLE: 125 ctl12 |= AR_IsAggr | AR_MoreAggr; 126 ctl17 |= SM(i->ndelim, AR_PadDelim); 127 break; 128 case AGGR_BUF_LAST: 129 ctl12 |= AR_IsAggr; 130 break; 131 case AGGR_BUF_NONE: 132 break; 133 } 134 135 val = (i->flags & ATH9K_TXDESC_PAPRD) >> ATH9K_TXDESC_PAPRD_S; 136 ctl12 |= SM(val, AR_PAPRDChainMask); 137 138 WRITE_ONCE(ads->ctl12, ctl12); 139 WRITE_ONCE(ads->ctl17, ctl17); 140 141 WRITE_ONCE(ads->ctl15, set11nPktDurRTSCTS(i->rates, 0) 142 | set11nPktDurRTSCTS(i->rates, 1)); 143 144 WRITE_ONCE(ads->ctl16, set11nPktDurRTSCTS(i->rates, 2) 145 | set11nPktDurRTSCTS(i->rates, 3)); 146 147 WRITE_ONCE(ads->ctl18, 148 set11nRateFlags(i->rates, 0) | set11nChainSel(i->rates, 0) 149 | set11nRateFlags(i->rates, 1) | set11nChainSel(i->rates, 1) 150 | set11nRateFlags(i->rates, 2) | set11nChainSel(i->rates, 2) 151 | set11nRateFlags(i->rates, 3) | set11nChainSel(i->rates, 3) 152 | SM(i->rtscts_rate, AR_RTSCTSRate)); 153 154 WRITE_ONCE(ads->ctl19, AR_Not_Sounding); 155 156 WRITE_ONCE(ads->ctl20, SM(i->txpower[1], AR_XmitPower1)); 157 WRITE_ONCE(ads->ctl21, SM(i->txpower[2], AR_XmitPower2)); 158 WRITE_ONCE(ads->ctl22, SM(i->txpower[3], AR_XmitPower3)); 159 } 160 161 static u16 ar9003_calc_ptr_chksum(struct ar9003_txc *ads) 162 { 163 int checksum; 164 165 checksum = ads->info + ads->link 166 + ads->data0 + ads->ctl3 167 + ads->data1 + ads->ctl5 168 + ads->data2 + ads->ctl7 169 + ads->data3 + ads->ctl9; 170 171 return ((checksum & 0xffff) + (checksum >> 16)) & AR_TxPtrChkSum; 172 } 173 174 static void ar9003_hw_set_desc_link(void *ds, u32 ds_link) 175 { 176 struct ar9003_txc *ads = ds; 177 178 ads->link = ds_link; 179 ads->ctl10 &= ~AR_TxPtrChkSum; 180 ads->ctl10 |= ar9003_calc_ptr_chksum(ads); 181 } 182 183 static bool ar9003_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked, 184 u32 *sync_cause_p) 185 { 186 u32 isr = 0; 187 u32 mask2 = 0; 188 struct ath9k_hw_capabilities *pCap = &ah->caps; 189 struct ath_common *common = ath9k_hw_common(ah); 190 u32 sync_cause = 0, async_cause, async_mask = AR_INTR_MAC_IRQ; 191 bool fatal_int; 192 193 if (ath9k_hw_mci_is_enabled(ah)) 194 async_mask |= AR_INTR_ASYNC_MASK_MCI; 195 196 async_cause = REG_READ(ah, AR_INTR_ASYNC_CAUSE(ah)); 197 198 if (async_cause & async_mask) { 199 if ((REG_READ(ah, AR_RTC_STATUS(ah)) & AR_RTC_STATUS_M(ah)) 200 == AR_RTC_STATUS_ON) 201 isr = REG_READ(ah, AR_ISR); 202 } 203 204 205 sync_cause = REG_READ(ah, AR_INTR_SYNC_CAUSE(ah)) & AR_INTR_SYNC_DEFAULT; 206 207 *masked = 0; 208 209 if (!isr && !sync_cause && !async_cause) 210 return false; 211 212 if (isr) { 213 if (isr & AR_ISR_BCNMISC) { 214 u32 isr2; 215 isr2 = REG_READ(ah, AR_ISR_S2); 216 217 mask2 |= ((isr2 & AR_ISR_S2_TIM) >> 218 MAP_ISR_S2_TIM); 219 mask2 |= ((isr2 & AR_ISR_S2_DTIM) >> 220 MAP_ISR_S2_DTIM); 221 mask2 |= ((isr2 & AR_ISR_S2_DTIMSYNC) >> 222 MAP_ISR_S2_DTIMSYNC); 223 mask2 |= ((isr2 & AR_ISR_S2_CABEND) >> 224 MAP_ISR_S2_CABEND); 225 mask2 |= ((isr2 & AR_ISR_S2_GTT) << 226 MAP_ISR_S2_GTT); 227 mask2 |= ((isr2 & AR_ISR_S2_CST) << 228 MAP_ISR_S2_CST); 229 mask2 |= ((isr2 & AR_ISR_S2_TSFOOR) >> 230 MAP_ISR_S2_TSFOOR); 231 mask2 |= ((isr2 & AR_ISR_S2_BB_WATCHDOG) >> 232 MAP_ISR_S2_BB_WATCHDOG); 233 234 if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) { 235 REG_WRITE(ah, AR_ISR_S2, isr2); 236 isr &= ~AR_ISR_BCNMISC; 237 } 238 } 239 240 if ((pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) 241 isr = REG_READ(ah, AR_ISR_RAC); 242 243 if (isr == 0xffffffff) { 244 *masked = 0; 245 return false; 246 } 247 248 *masked = isr & ATH9K_INT_COMMON; 249 250 if (ah->config.rx_intr_mitigation) 251 if (isr & (AR_ISR_RXMINTR | AR_ISR_RXINTM)) 252 *masked |= ATH9K_INT_RXLP; 253 254 if (ah->config.tx_intr_mitigation) 255 if (isr & (AR_ISR_TXMINTR | AR_ISR_TXINTM)) 256 *masked |= ATH9K_INT_TX; 257 258 if (isr & (AR_ISR_LP_RXOK | AR_ISR_RXERR)) 259 *masked |= ATH9K_INT_RXLP; 260 261 if (isr & AR_ISR_HP_RXOK) 262 *masked |= ATH9K_INT_RXHP; 263 264 if (isr & (AR_ISR_TXOK | AR_ISR_TXERR | AR_ISR_TXEOL)) { 265 *masked |= ATH9K_INT_TX; 266 267 if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) { 268 u32 s0, s1; 269 s0 = REG_READ(ah, AR_ISR_S0); 270 REG_WRITE(ah, AR_ISR_S0, s0); 271 s1 = REG_READ(ah, AR_ISR_S1); 272 REG_WRITE(ah, AR_ISR_S1, s1); 273 274 isr &= ~(AR_ISR_TXOK | AR_ISR_TXERR | 275 AR_ISR_TXEOL); 276 } 277 } 278 279 if (isr & AR_ISR_GENTMR) { 280 u32 s5; 281 282 if (pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED) 283 s5 = REG_READ(ah, AR_ISR_S5_S(ah)); 284 else 285 s5 = REG_READ(ah, AR_ISR_S5); 286 287 ah->intr_gen_timer_trigger = 288 MS(s5, AR_ISR_S5_GENTIMER_TRIG); 289 290 ah->intr_gen_timer_thresh = 291 MS(s5, AR_ISR_S5_GENTIMER_THRESH); 292 293 if (ah->intr_gen_timer_trigger) 294 *masked |= ATH9K_INT_GENTIMER; 295 296 if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) { 297 REG_WRITE(ah, AR_ISR_S5, s5); 298 isr &= ~AR_ISR_GENTMR; 299 } 300 301 } 302 303 *masked |= mask2; 304 305 if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) { 306 REG_WRITE(ah, AR_ISR, isr); 307 308 (void) REG_READ(ah, AR_ISR); 309 } 310 311 if (*masked & ATH9K_INT_BB_WATCHDOG) 312 ar9003_hw_bb_watchdog_read(ah); 313 } 314 315 if (async_cause & AR_INTR_ASYNC_MASK_MCI) 316 ar9003_mci_get_isr(ah, masked); 317 318 if (sync_cause) { 319 if (sync_cause_p) 320 *sync_cause_p = sync_cause; 321 fatal_int = 322 (sync_cause & 323 (AR_INTR_SYNC_HOST1_FATAL | AR_INTR_SYNC_HOST1_PERR)) 324 ? true : false; 325 326 if (fatal_int) { 327 if (sync_cause & AR_INTR_SYNC_HOST1_FATAL) { 328 ath_dbg(common, ANY, 329 "received PCI FATAL interrupt\n"); 330 } 331 if (sync_cause & AR_INTR_SYNC_HOST1_PERR) { 332 ath_dbg(common, ANY, 333 "received PCI PERR interrupt\n"); 334 } 335 *masked |= ATH9K_INT_FATAL; 336 } 337 338 if (sync_cause & AR_INTR_SYNC_RADM_CPL_TIMEOUT) { 339 REG_WRITE(ah, AR_RC, AR_RC_HOSTIF); 340 REG_WRITE(ah, AR_RC, 0); 341 *masked |= ATH9K_INT_FATAL; 342 } 343 344 if (sync_cause & AR_INTR_SYNC_LOCAL_TIMEOUT) 345 ath_dbg(common, INTERRUPT, 346 "AR_INTR_SYNC_LOCAL_TIMEOUT\n"); 347 348 REG_WRITE(ah, AR_INTR_SYNC_CAUSE_CLR(ah), sync_cause); 349 (void) REG_READ(ah, AR_INTR_SYNC_CAUSE_CLR(ah)); 350 351 } 352 return true; 353 } 354 355 static int ar9003_hw_proc_txdesc(struct ath_hw *ah, void *ds, 356 struct ath_tx_status *ts) 357 { 358 struct ar9003_txs *ads; 359 u32 status; 360 361 ads = &ah->ts_ring[ah->ts_tail]; 362 363 status = READ_ONCE(ads->status8); 364 if ((status & AR_TxDone) == 0) 365 return -EINPROGRESS; 366 367 ah->ts_tail = (ah->ts_tail + 1) % ah->ts_size; 368 369 if ((MS(ads->ds_info, AR_DescId) != ATHEROS_VENDOR_ID) || 370 (MS(ads->ds_info, AR_TxRxDesc) != 1)) { 371 ath_dbg(ath9k_hw_common(ah), XMIT, 372 "Tx Descriptor error %x\n", ads->ds_info); 373 memset(ads, 0, sizeof(*ads)); 374 return -EIO; 375 } 376 377 ts->ts_rateindex = MS(status, AR_FinalTxIdx); 378 ts->ts_seqnum = MS(status, AR_SeqNum); 379 ts->tid = MS(status, AR_TxTid); 380 381 ts->qid = MS(ads->ds_info, AR_TxQcuNum); 382 ts->desc_id = MS(ads->status1, AR_TxDescId); 383 ts->ts_tstamp = ads->status4; 384 ts->ts_status = 0; 385 ts->ts_flags = 0; 386 387 if (status & AR_TxOpExceeded) 388 ts->ts_status |= ATH9K_TXERR_XTXOP; 389 status = READ_ONCE(ads->status2); 390 ts->ts_rssi_ctl0 = MS(status, AR_TxRSSIAnt00); 391 ts->ts_rssi_ctl1 = MS(status, AR_TxRSSIAnt01); 392 ts->ts_rssi_ctl2 = MS(status, AR_TxRSSIAnt02); 393 if (status & AR_TxBaStatus) { 394 ts->ts_flags |= ATH9K_TX_BA; 395 ts->ba_low = ads->status5; 396 ts->ba_high = ads->status6; 397 } 398 399 status = READ_ONCE(ads->status3); 400 if (status & AR_ExcessiveRetries) 401 ts->ts_status |= ATH9K_TXERR_XRETRY; 402 if (status & AR_Filtered) 403 ts->ts_status |= ATH9K_TXERR_FILT; 404 if (status & AR_FIFOUnderrun) { 405 ts->ts_status |= ATH9K_TXERR_FIFO; 406 ath9k_hw_updatetxtriglevel(ah, true); 407 } 408 if (status & AR_TxTimerExpired) 409 ts->ts_status |= ATH9K_TXERR_TIMER_EXPIRED; 410 if (status & AR_DescCfgErr) 411 ts->ts_flags |= ATH9K_TX_DESC_CFG_ERR; 412 if (status & AR_TxDataUnderrun) { 413 ts->ts_flags |= ATH9K_TX_DATA_UNDERRUN; 414 ath9k_hw_updatetxtriglevel(ah, true); 415 } 416 if (status & AR_TxDelimUnderrun) { 417 ts->ts_flags |= ATH9K_TX_DELIM_UNDERRUN; 418 ath9k_hw_updatetxtriglevel(ah, true); 419 } 420 ts->ts_shortretry = MS(status, AR_RTSFailCnt); 421 ts->ts_longretry = MS(status, AR_DataFailCnt); 422 ts->ts_virtcol = MS(status, AR_VirtRetryCnt); 423 424 status = READ_ONCE(ads->status7); 425 ts->ts_rssi = MS(status, AR_TxRSSICombined); 426 ts->ts_rssi_ext0 = MS(status, AR_TxRSSIAnt10); 427 ts->ts_rssi_ext1 = MS(status, AR_TxRSSIAnt11); 428 ts->ts_rssi_ext2 = MS(status, AR_TxRSSIAnt12); 429 430 memset(ads, 0, sizeof(*ads)); 431 432 return 0; 433 } 434 435 static int ar9003_hw_get_duration(struct ath_hw *ah, const void *ds, int index) 436 { 437 const struct ar9003_txc *adc = ds; 438 439 switch (index) { 440 case 0: 441 return MS(READ_ONCE(adc->ctl15), AR_PacketDur0); 442 case 1: 443 return MS(READ_ONCE(adc->ctl15), AR_PacketDur1); 444 case 2: 445 return MS(READ_ONCE(adc->ctl16), AR_PacketDur2); 446 case 3: 447 return MS(READ_ONCE(adc->ctl16), AR_PacketDur3); 448 default: 449 return 0; 450 } 451 } 452 453 void ar9003_hw_attach_mac_ops(struct ath_hw *hw) 454 { 455 struct ath_hw_ops *ops = ath9k_hw_ops(hw); 456 457 ops->rx_enable = ar9003_hw_rx_enable; 458 ops->set_desc_link = ar9003_hw_set_desc_link; 459 ops->get_isr = ar9003_hw_get_isr; 460 ops->set_txdesc = ar9003_set_txdesc; 461 ops->proc_txdesc = ar9003_hw_proc_txdesc; 462 ops->get_duration = ar9003_hw_get_duration; 463 } 464 465 void ath9k_hw_set_rx_bufsize(struct ath_hw *ah, u16 buf_size) 466 { 467 REG_WRITE(ah, AR_DATABUF_SIZE, buf_size & AR_DATABUF_SIZE_MASK); 468 } 469 EXPORT_SYMBOL(ath9k_hw_set_rx_bufsize); 470 471 void ath9k_hw_addrxbuf_edma(struct ath_hw *ah, u32 rxdp, 472 enum ath9k_rx_qtype qtype) 473 { 474 if (qtype == ATH9K_RX_QUEUE_HP) 475 REG_WRITE(ah, AR_HP_RXDP, rxdp); 476 else 477 REG_WRITE(ah, AR_LP_RXDP, rxdp); 478 } 479 EXPORT_SYMBOL(ath9k_hw_addrxbuf_edma); 480 481 int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah, struct ath_rx_status *rxs, 482 void *buf_addr) 483 { 484 struct ar9003_rxs *rxsp = buf_addr; 485 unsigned int phyerr; 486 487 if ((rxsp->status11 & AR_RxDone) == 0) 488 return -EINPROGRESS; 489 490 if (MS(rxsp->ds_info, AR_DescId) != 0x168c) 491 return -EINVAL; 492 493 if ((rxsp->ds_info & (AR_TxRxDesc | AR_CtrlStat)) != 0) 494 return -EINPROGRESS; 495 496 rxs->rs_status = 0; 497 rxs->rs_flags = 0; 498 rxs->enc_flags = 0; 499 rxs->bw = RATE_INFO_BW_20; 500 501 rxs->rs_datalen = rxsp->status2 & AR_DataLen; 502 rxs->rs_tstamp = rxsp->status3; 503 504 /* XXX: Keycache */ 505 rxs->rs_rssi = MS(rxsp->status5, AR_RxRSSICombined); 506 rxs->rs_rssi_ctl[0] = MS(rxsp->status1, AR_RxRSSIAnt00); 507 rxs->rs_rssi_ctl[1] = MS(rxsp->status1, AR_RxRSSIAnt01); 508 rxs->rs_rssi_ctl[2] = MS(rxsp->status1, AR_RxRSSIAnt02); 509 rxs->rs_rssi_ext[0] = MS(rxsp->status5, AR_RxRSSIAnt10); 510 rxs->rs_rssi_ext[1] = MS(rxsp->status5, AR_RxRSSIAnt11); 511 rxs->rs_rssi_ext[2] = MS(rxsp->status5, AR_RxRSSIAnt12); 512 513 if (rxsp->status11 & AR_RxKeyIdxValid) 514 rxs->rs_keyix = MS(rxsp->status11, AR_KeyIdx); 515 else 516 rxs->rs_keyix = ATH9K_RXKEYIX_INVALID; 517 518 rxs->rs_rate = MS(rxsp->status1, AR_RxRate); 519 rxs->rs_more = (rxsp->status2 & AR_RxMore) ? 1 : 0; 520 521 rxs->rs_firstaggr = (rxsp->status11 & AR_RxFirstAggr) ? 1 : 0; 522 rxs->rs_isaggr = (rxsp->status11 & AR_RxAggr) ? 1 : 0; 523 rxs->rs_moreaggr = (rxsp->status11 & AR_RxMoreAggr) ? 1 : 0; 524 rxs->rs_antenna = (MS(rxsp->status4, AR_RxAntenna) & 0x7); 525 rxs->enc_flags |= (rxsp->status4 & AR_GI) ? RX_ENC_FLAG_SHORT_GI : 0; 526 rxs->enc_flags |= 527 (rxsp->status4 & AR_STBC) ? (1 << RX_ENC_FLAG_STBC_SHIFT) : 0; 528 rxs->bw = (rxsp->status4 & AR_2040) ? RATE_INFO_BW_40 : RATE_INFO_BW_20; 529 530 rxs->evm0 = rxsp->status6; 531 rxs->evm1 = rxsp->status7; 532 rxs->evm2 = rxsp->status8; 533 rxs->evm3 = rxsp->status9; 534 rxs->evm4 = (rxsp->status10 & 0xffff); 535 536 if (rxsp->status11 & AR_PreDelimCRCErr) 537 rxs->rs_flags |= ATH9K_RX_DELIM_CRC_PRE; 538 539 if (rxsp->status11 & AR_PostDelimCRCErr) 540 rxs->rs_flags |= ATH9K_RX_DELIM_CRC_POST; 541 542 if (rxsp->status11 & AR_DecryptBusyErr) 543 rxs->rs_flags |= ATH9K_RX_DECRYPT_BUSY; 544 545 if ((rxsp->status11 & AR_RxFrameOK) == 0) { 546 /* 547 * AR_CRCErr will bet set to true if we're on the last 548 * subframe and the AR_PostDelimCRCErr is caught. 549 * In a way this also gives us a guarantee that when 550 * (!(AR_CRCErr) && (AR_PostDelimCRCErr)) we cannot 551 * possibly be reviewing the last subframe. AR_CRCErr 552 * is the CRC of the actual data. 553 */ 554 if (rxsp->status11 & AR_CRCErr) 555 rxs->rs_status |= ATH9K_RXERR_CRC; 556 else if (rxsp->status11 & AR_DecryptCRCErr) 557 rxs->rs_status |= ATH9K_RXERR_DECRYPT; 558 else if (rxsp->status11 & AR_MichaelErr) 559 rxs->rs_status |= ATH9K_RXERR_MIC; 560 if (rxsp->status11 & AR_PHYErr) { 561 phyerr = MS(rxsp->status11, AR_PHYErrCode); 562 /* 563 * If we reach a point here where AR_PostDelimCRCErr is 564 * true it implies we're *not* on the last subframe. In 565 * in that case that we know already that the CRC of 566 * the frame was OK, and MAC would send an ACK for that 567 * subframe, even if we did get a phy error of type 568 * ATH9K_PHYERR_OFDM_RESTART. This is only applicable 569 * to frame that are prior to the last subframe. 570 * The AR_PostDelimCRCErr is the CRC for the MPDU 571 * delimiter, which contains the 4 reserved bits, 572 * the MPDU length (12 bits), and follows the MPDU 573 * delimiter for an A-MPDU subframe (0x4E = 'N' ASCII). 574 */ 575 if ((phyerr == ATH9K_PHYERR_OFDM_RESTART) && 576 (rxsp->status11 & AR_PostDelimCRCErr)) { 577 rxs->rs_phyerr = 0; 578 } else { 579 rxs->rs_status |= ATH9K_RXERR_PHY; 580 rxs->rs_phyerr = phyerr; 581 } 582 } 583 } 584 585 if (rxsp->status11 & AR_KeyMiss) 586 rxs->rs_status |= ATH9K_RXERR_KEYMISS; 587 588 return 0; 589 } 590 EXPORT_SYMBOL(ath9k_hw_process_rxdesc_edma); 591 592 void ath9k_hw_reset_txstatus_ring(struct ath_hw *ah) 593 { 594 ah->ts_tail = 0; 595 596 memset((void *) ah->ts_ring, 0, 597 ah->ts_size * sizeof(struct ar9003_txs)); 598 599 ath_dbg(ath9k_hw_common(ah), XMIT, 600 "TS Start 0x%x End 0x%x Virt %p, Size %d\n", 601 ah->ts_paddr_start, ah->ts_paddr_end, 602 ah->ts_ring, ah->ts_size); 603 604 REG_WRITE(ah, AR_Q_STATUS_RING_START, ah->ts_paddr_start); 605 REG_WRITE(ah, AR_Q_STATUS_RING_END, ah->ts_paddr_end); 606 } 607 608 void ath9k_hw_setup_statusring(struct ath_hw *ah, void *ts_start, 609 u32 ts_paddr_start, 610 u16 size) 611 { 612 613 ah->ts_paddr_start = ts_paddr_start; 614 ah->ts_paddr_end = ts_paddr_start + (size * sizeof(struct ar9003_txs)); 615 ah->ts_size = size; 616 ah->ts_ring = ts_start; 617 618 ath9k_hw_reset_txstatus_ring(ah); 619 } 620 EXPORT_SYMBOL(ath9k_hw_setup_statusring); 621