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b622a720 | 1 | /* |
5b68138e | 2 | * Copyright (c) 2008-2011 Atheros Communications Inc. |
b622a720 LR |
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 | ||
17 | #include "hw.h" | |
ee40fa06 | 18 | #include <linux/export.h> |
b622a720 LR |
19 | |
20 | #define AR_BufLen 0x00000fff | |
21 | ||
22 | static void ar9002_hw_rx_enable(struct ath_hw *ah) | |
23 | { | |
24 | REG_WRITE(ah, AR_CR, AR_CR_RXE); | |
25 | } | |
26 | ||
27 | static void ar9002_hw_set_desc_link(void *ds, u32 ds_link) | |
28 | { | |
29 | ((struct ath_desc*) ds)->ds_link = ds_link; | |
30 | } | |
31 | ||
b622a720 LR |
32 | static bool ar9002_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked) |
33 | { | |
34 | u32 isr = 0; | |
35 | u32 mask2 = 0; | |
36 | struct ath9k_hw_capabilities *pCap = &ah->caps; | |
37 | u32 sync_cause = 0; | |
38 | bool fatal_int = false; | |
39 | struct ath_common *common = ath9k_hw_common(ah); | |
40 | ||
41 | if (!AR_SREV_9100(ah)) { | |
42 | if (REG_READ(ah, AR_INTR_ASYNC_CAUSE) & AR_INTR_MAC_IRQ) { | |
43 | if ((REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M) | |
44 | == AR_RTC_STATUS_ON) { | |
45 | isr = REG_READ(ah, AR_ISR); | |
46 | } | |
47 | } | |
48 | ||
49 | sync_cause = REG_READ(ah, AR_INTR_SYNC_CAUSE) & | |
50 | AR_INTR_SYNC_DEFAULT; | |
51 | ||
52 | *masked = 0; | |
53 | ||
54 | if (!isr && !sync_cause) | |
55 | return false; | |
56 | } else { | |
57 | *masked = 0; | |
58 | isr = REG_READ(ah, AR_ISR); | |
59 | } | |
60 | ||
61 | if (isr) { | |
62 | if (isr & AR_ISR_BCNMISC) { | |
63 | u32 isr2; | |
64 | isr2 = REG_READ(ah, AR_ISR_S2); | |
65 | if (isr2 & AR_ISR_S2_TIM) | |
66 | mask2 |= ATH9K_INT_TIM; | |
67 | if (isr2 & AR_ISR_S2_DTIM) | |
68 | mask2 |= ATH9K_INT_DTIM; | |
69 | if (isr2 & AR_ISR_S2_DTIMSYNC) | |
70 | mask2 |= ATH9K_INT_DTIMSYNC; | |
71 | if (isr2 & (AR_ISR_S2_CABEND)) | |
72 | mask2 |= ATH9K_INT_CABEND; | |
73 | if (isr2 & AR_ISR_S2_GTT) | |
74 | mask2 |= ATH9K_INT_GTT; | |
75 | if (isr2 & AR_ISR_S2_CST) | |
76 | mask2 |= ATH9K_INT_CST; | |
77 | if (isr2 & AR_ISR_S2_TSFOOR) | |
78 | mask2 |= ATH9K_INT_TSFOOR; | |
79 | } | |
80 | ||
81 | isr = REG_READ(ah, AR_ISR_RAC); | |
82 | if (isr == 0xffffffff) { | |
83 | *masked = 0; | |
84 | return false; | |
85 | } | |
86 | ||
87 | *masked = isr & ATH9K_INT_COMMON; | |
88 | ||
45684c75 FF |
89 | if (isr & (AR_ISR_RXMINTR | AR_ISR_RXINTM | |
90 | AR_ISR_RXOK | AR_ISR_RXERR)) | |
b622a720 | 91 | *masked |= ATH9K_INT_RX; |
45684c75 | 92 | |
b622a720 LR |
93 | if (isr & |
94 | (AR_ISR_TXOK | AR_ISR_TXDESC | AR_ISR_TXERR | | |
95 | AR_ISR_TXEOL)) { | |
96 | u32 s0_s, s1_s; | |
97 | ||
98 | *masked |= ATH9K_INT_TX; | |
99 | ||
100 | s0_s = REG_READ(ah, AR_ISR_S0_S); | |
101 | ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXOK); | |
102 | ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXDESC); | |
103 | ||
104 | s1_s = REG_READ(ah, AR_ISR_S1_S); | |
105 | ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXERR); | |
106 | ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXEOL); | |
107 | } | |
108 | ||
109 | if (isr & AR_ISR_RXORN) { | |
226afe68 JP |
110 | ath_dbg(common, ATH_DBG_INTERRUPT, |
111 | "receive FIFO overrun interrupt\n"); | |
b622a720 LR |
112 | } |
113 | ||
b622a720 LR |
114 | *masked |= mask2; |
115 | } | |
116 | ||
117 | if (AR_SREV_9100(ah)) | |
118 | return true; | |
119 | ||
120 | if (isr & AR_ISR_GENTMR) { | |
121 | u32 s5_s; | |
122 | ||
123 | s5_s = REG_READ(ah, AR_ISR_S5_S); | |
45684c75 | 124 | ah->intr_gen_timer_trigger = |
b622a720 LR |
125 | MS(s5_s, AR_ISR_S5_GENTIMER_TRIG); |
126 | ||
45684c75 FF |
127 | ah->intr_gen_timer_thresh = |
128 | MS(s5_s, AR_ISR_S5_GENTIMER_THRESH); | |
b622a720 | 129 | |
45684c75 FF |
130 | if (ah->intr_gen_timer_trigger) |
131 | *masked |= ATH9K_INT_GENTIMER; | |
b622a720 | 132 | |
45684c75 FF |
133 | if ((s5_s & AR_ISR_S5_TIM_TIMER) && |
134 | !(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) | |
135 | *masked |= ATH9K_INT_TIM_TIMER; | |
b622a720 LR |
136 | } |
137 | ||
138 | if (sync_cause) { | |
139 | fatal_int = | |
140 | (sync_cause & | |
141 | (AR_INTR_SYNC_HOST1_FATAL | AR_INTR_SYNC_HOST1_PERR)) | |
142 | ? true : false; | |
143 | ||
144 | if (fatal_int) { | |
145 | if (sync_cause & AR_INTR_SYNC_HOST1_FATAL) { | |
226afe68 JP |
146 | ath_dbg(common, ATH_DBG_ANY, |
147 | "received PCI FATAL interrupt\n"); | |
b622a720 LR |
148 | } |
149 | if (sync_cause & AR_INTR_SYNC_HOST1_PERR) { | |
226afe68 JP |
150 | ath_dbg(common, ATH_DBG_ANY, |
151 | "received PCI PERR interrupt\n"); | |
b622a720 LR |
152 | } |
153 | *masked |= ATH9K_INT_FATAL; | |
154 | } | |
155 | if (sync_cause & AR_INTR_SYNC_RADM_CPL_TIMEOUT) { | |
226afe68 JP |
156 | ath_dbg(common, ATH_DBG_INTERRUPT, |
157 | "AR_INTR_SYNC_RADM_CPL_TIMEOUT\n"); | |
b622a720 LR |
158 | REG_WRITE(ah, AR_RC, AR_RC_HOSTIF); |
159 | REG_WRITE(ah, AR_RC, 0); | |
160 | *masked |= ATH9K_INT_FATAL; | |
161 | } | |
162 | if (sync_cause & AR_INTR_SYNC_LOCAL_TIMEOUT) { | |
226afe68 JP |
163 | ath_dbg(common, ATH_DBG_INTERRUPT, |
164 | "AR_INTR_SYNC_LOCAL_TIMEOUT\n"); | |
b622a720 LR |
165 | } |
166 | ||
167 | REG_WRITE(ah, AR_INTR_SYNC_CAUSE_CLR, sync_cause); | |
168 | (void) REG_READ(ah, AR_INTR_SYNC_CAUSE_CLR); | |
169 | } | |
170 | ||
171 | return true; | |
172 | } | |
173 | ||
2b63a41d FF |
174 | static void |
175 | ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) | |
176 | { | |
177 | struct ar5416_desc *ads = AR5416DESC(ds); | |
178 | u32 ctl1, ctl6; | |
179 | ||
180 | ads->ds_txstatus0 = ads->ds_txstatus1 = 0; | |
181 | ads->ds_txstatus2 = ads->ds_txstatus3 = 0; | |
182 | ads->ds_txstatus4 = ads->ds_txstatus5 = 0; | |
183 | ads->ds_txstatus6 = ads->ds_txstatus7 = 0; | |
184 | ads->ds_txstatus8 = ads->ds_txstatus9 = 0; | |
185 | ||
186 | ACCESS_ONCE(ads->ds_link) = i->link; | |
187 | ACCESS_ONCE(ads->ds_data) = i->buf_addr[0]; | |
188 | ||
189 | ctl1 = i->buf_len[0] | (i->is_last ? 0 : AR_TxMore); | |
190 | ctl6 = SM(i->keytype, AR_EncrType); | |
191 | ||
192 | if (AR_SREV_9285(ah)) { | |
193 | ads->ds_ctl8 = 0; | |
194 | ads->ds_ctl9 = 0; | |
195 | ads->ds_ctl10 = 0; | |
196 | ads->ds_ctl11 = 0; | |
197 | } | |
198 | ||
199 | if ((i->is_first || i->is_last) && | |
200 | i->aggr != AGGR_BUF_MIDDLE && i->aggr != AGGR_BUF_LAST) { | |
201 | ACCESS_ONCE(ads->ds_ctl2) = set11nTries(i->rates, 0) | |
202 | | set11nTries(i->rates, 1) | |
203 | | set11nTries(i->rates, 2) | |
204 | | set11nTries(i->rates, 3) | |
205 | | (i->dur_update ? AR_DurUpdateEna : 0) | |
206 | | SM(0, AR_BurstDur); | |
207 | ||
208 | ACCESS_ONCE(ads->ds_ctl3) = set11nRate(i->rates, 0) | |
209 | | set11nRate(i->rates, 1) | |
210 | | set11nRate(i->rates, 2) | |
211 | | set11nRate(i->rates, 3); | |
212 | } else { | |
213 | ACCESS_ONCE(ads->ds_ctl2) = 0; | |
214 | ACCESS_ONCE(ads->ds_ctl3) = 0; | |
215 | } | |
216 | ||
217 | if (!i->is_first) { | |
218 | ACCESS_ONCE(ads->ds_ctl0) = 0; | |
219 | ACCESS_ONCE(ads->ds_ctl1) = ctl1; | |
220 | ACCESS_ONCE(ads->ds_ctl6) = ctl6; | |
221 | return; | |
222 | } | |
223 | ||
224 | ctl1 |= (i->keyix != ATH9K_TXKEYIX_INVALID ? SM(i->keyix, AR_DestIdx) : 0) | |
225 | | SM(i->type, AR_FrameType) | |
226 | | (i->flags & ATH9K_TXDESC_NOACK ? AR_NoAck : 0) | |
227 | | (i->flags & ATH9K_TXDESC_EXT_ONLY ? AR_ExtOnly : 0) | |
228 | | (i->flags & ATH9K_TXDESC_EXT_AND_CTL ? AR_ExtAndCtl : 0); | |
229 | ||
230 | switch (i->aggr) { | |
231 | case AGGR_BUF_FIRST: | |
232 | ctl6 |= SM(i->aggr_len, AR_AggrLen); | |
233 | /* fall through */ | |
234 | case AGGR_BUF_MIDDLE: | |
235 | ctl1 |= AR_IsAggr | AR_MoreAggr; | |
236 | ctl6 |= SM(i->ndelim, AR_PadDelim); | |
237 | break; | |
238 | case AGGR_BUF_LAST: | |
239 | ctl1 |= AR_IsAggr; | |
240 | break; | |
241 | case AGGR_BUF_NONE: | |
242 | break; | |
243 | } | |
244 | ||
245 | ACCESS_ONCE(ads->ds_ctl0) = (i->pkt_len & AR_FrameLen) | |
246 | | (i->flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0) | |
247 | | SM(i->txpower, AR_XmitPower) | |
248 | | (i->flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0) | |
249 | | (i->flags & ATH9K_TXDESC_INTREQ ? AR_TxIntrReq : 0) | |
250 | | (i->keyix != ATH9K_TXKEYIX_INVALID ? AR_DestIdxValid : 0) | |
251 | | (i->flags & ATH9K_TXDESC_CLRDMASK ? AR_ClrDestMask : 0) | |
252 | | (i->flags & ATH9K_TXDESC_RTSENA ? AR_RTSEnable : | |
253 | (i->flags & ATH9K_TXDESC_CTSENA ? AR_CTSEnable : 0)); | |
254 | ||
255 | ACCESS_ONCE(ads->ds_ctl1) = ctl1; | |
256 | ACCESS_ONCE(ads->ds_ctl6) = ctl6; | |
257 | ||
258 | if (i->aggr == AGGR_BUF_MIDDLE || i->aggr == AGGR_BUF_LAST) | |
259 | return; | |
260 | ||
261 | ACCESS_ONCE(ads->ds_ctl4) = set11nPktDurRTSCTS(i->rates, 0) | |
262 | | set11nPktDurRTSCTS(i->rates, 1); | |
263 | ||
264 | ACCESS_ONCE(ads->ds_ctl5) = set11nPktDurRTSCTS(i->rates, 2) | |
265 | | set11nPktDurRTSCTS(i->rates, 3); | |
266 | ||
267 | ACCESS_ONCE(ads->ds_ctl7) = set11nRateFlags(i->rates, 0) | |
268 | | set11nRateFlags(i->rates, 1) | |
269 | | set11nRateFlags(i->rates, 2) | |
270 | | set11nRateFlags(i->rates, 3) | |
271 | | SM(i->rtscts_rate, AR_RTSCTSRate); | |
272 | } | |
273 | ||
b622a720 LR |
274 | static int ar9002_hw_proc_txdesc(struct ath_hw *ah, void *ds, |
275 | struct ath_tx_status *ts) | |
276 | { | |
277 | struct ar5416_desc *ads = AR5416DESC(ds); | |
e0e9bc82 | 278 | u32 status; |
b622a720 | 279 | |
e0e9bc82 FF |
280 | status = ACCESS_ONCE(ads->ds_txstatus9); |
281 | if ((status & AR_TxDone) == 0) | |
b622a720 LR |
282 | return -EINPROGRESS; |
283 | ||
b622a720 LR |
284 | ts->ts_tstamp = ads->AR_SendTimestamp; |
285 | ts->ts_status = 0; | |
286 | ts->ts_flags = 0; | |
287 | ||
e0e9bc82 FF |
288 | if (status & AR_TxOpExceeded) |
289 | ts->ts_status |= ATH9K_TXERR_XTXOP; | |
290 | ts->tid = MS(status, AR_TxTid); | |
291 | ts->ts_rateindex = MS(status, AR_FinalTxIdx); | |
292 | ts->ts_seqnum = MS(status, AR_SeqNum); | |
293 | ||
294 | status = ACCESS_ONCE(ads->ds_txstatus0); | |
295 | ts->ts_rssi_ctl0 = MS(status, AR_TxRSSIAnt00); | |
296 | ts->ts_rssi_ctl1 = MS(status, AR_TxRSSIAnt01); | |
297 | ts->ts_rssi_ctl2 = MS(status, AR_TxRSSIAnt02); | |
298 | if (status & AR_TxBaStatus) { | |
299 | ts->ts_flags |= ATH9K_TX_BA; | |
300 | ts->ba_low = ads->AR_BaBitmapLow; | |
301 | ts->ba_high = ads->AR_BaBitmapHigh; | |
302 | } | |
303 | ||
304 | status = ACCESS_ONCE(ads->ds_txstatus1); | |
305 | if (status & AR_FrmXmitOK) | |
b622a720 | 306 | ts->ts_status |= ATH9K_TX_ACKED; |
ff32d9cd FF |
307 | else { |
308 | if (status & AR_ExcessiveRetries) | |
309 | ts->ts_status |= ATH9K_TXERR_XRETRY; | |
310 | if (status & AR_Filtered) | |
311 | ts->ts_status |= ATH9K_TXERR_FILT; | |
312 | if (status & AR_FIFOUnderrun) { | |
313 | ts->ts_status |= ATH9K_TXERR_FIFO; | |
314 | ath9k_hw_updatetxtriglevel(ah, true); | |
315 | } | |
b622a720 | 316 | } |
e0e9bc82 | 317 | if (status & AR_TxTimerExpired) |
b622a720 | 318 | ts->ts_status |= ATH9K_TXERR_TIMER_EXPIRED; |
e0e9bc82 | 319 | if (status & AR_DescCfgErr) |
b622a720 | 320 | ts->ts_flags |= ATH9K_TX_DESC_CFG_ERR; |
e0e9bc82 | 321 | if (status & AR_TxDataUnderrun) { |
b622a720 LR |
322 | ts->ts_flags |= ATH9K_TX_DATA_UNDERRUN; |
323 | ath9k_hw_updatetxtriglevel(ah, true); | |
324 | } | |
e0e9bc82 | 325 | if (status & AR_TxDelimUnderrun) { |
b622a720 LR |
326 | ts->ts_flags |= ATH9K_TX_DELIM_UNDERRUN; |
327 | ath9k_hw_updatetxtriglevel(ah, true); | |
328 | } | |
e0e9bc82 FF |
329 | ts->ts_shortretry = MS(status, AR_RTSFailCnt); |
330 | ts->ts_longretry = MS(status, AR_DataFailCnt); | |
331 | ts->ts_virtcol = MS(status, AR_VirtRetryCnt); | |
b622a720 | 332 | |
e0e9bc82 FF |
333 | status = ACCESS_ONCE(ads->ds_txstatus5); |
334 | ts->ts_rssi = MS(status, AR_TxRSSICombined); | |
335 | ts->ts_rssi_ext0 = MS(status, AR_TxRSSIAnt10); | |
336 | ts->ts_rssi_ext1 = MS(status, AR_TxRSSIAnt11); | |
337 | ts->ts_rssi_ext2 = MS(status, AR_TxRSSIAnt12); | |
b622a720 | 338 | |
b622a720 LR |
339 | ts->evm0 = ads->AR_TxEVM0; |
340 | ts->evm1 = ads->AR_TxEVM1; | |
341 | ts->evm2 = ads->AR_TxEVM2; | |
b622a720 LR |
342 | |
343 | return 0; | |
344 | } | |
345 | ||
b622a720 LR |
346 | void ath9k_hw_setuprxdesc(struct ath_hw *ah, struct ath_desc *ds, |
347 | u32 size, u32 flags) | |
348 | { | |
349 | struct ar5416_desc *ads = AR5416DESC(ds); | |
350 | struct ath9k_hw_capabilities *pCap = &ah->caps; | |
351 | ||
352 | ads->ds_ctl1 = size & AR_BufLen; | |
353 | if (flags & ATH9K_RXDESC_INTREQ) | |
354 | ads->ds_ctl1 |= AR_RxIntrReq; | |
355 | ||
356 | ads->ds_rxstatus8 &= ~AR_RxDone; | |
357 | if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) | |
358 | memset(&(ads->u), 0, sizeof(ads->u)); | |
359 | } | |
360 | EXPORT_SYMBOL(ath9k_hw_setuprxdesc); | |
361 | ||
362 | void ar9002_hw_attach_mac_ops(struct ath_hw *ah) | |
363 | { | |
364 | struct ath_hw_ops *ops = ath9k_hw_ops(ah); | |
365 | ||
366 | ops->rx_enable = ar9002_hw_rx_enable; | |
367 | ops->set_desc_link = ar9002_hw_set_desc_link; | |
b622a720 | 368 | ops->get_isr = ar9002_hw_get_isr; |
2b63a41d | 369 | ops->set_txdesc = ar9002_set_txdesc; |
b622a720 | 370 | ops->proc_txdesc = ar9002_hw_proc_txdesc; |
b622a720 | 371 | } |