1 /*-
2 * Copyright (c) 2016 Andriy Voskoboinyk <avos@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 #include "opt_wlan.h"
29
30 #include <sys/param.h>
31 #include <sys/lock.h>
32 #include <sys/mutex.h>
33 #include <sys/mbuf.h>
34 #include <sys/kernel.h>
35 #include <sys/socket.h>
36 #include <sys/systm.h>
37 #include <sys/malloc.h>
38 #include <sys/queue.h>
39 #include <sys/taskqueue.h>
40 #include <sys/bus.h>
41 #include <sys/endian.h>
42 #include <sys/linker.h>
43
44 #include <net/if.h>
45 #include <net/ethernet.h>
46 #include <net/if_media.h>
47
48 #include <net80211/ieee80211_var.h>
49 #include <net80211/ieee80211_radiotap.h>
50 #include <net80211/ieee80211_ratectl.h>
51
52 #include <dev/rtwn/if_rtwnreg.h>
53 #include <dev/rtwn/if_rtwnvar.h>
54
55 #include <dev/rtwn/if_rtwn_debug.h>
56 #include <dev/rtwn/if_rtwn_ridx.h>
57
58 #include <dev/rtwn/rtl8812a/r12a.h>
59 #include <dev/rtwn/rtl8812a/r12a_var.h>
60 #include <dev/rtwn/rtl8812a/r12a_fw_cmd.h>
61 #include <dev/rtwn/rtl8812a/r12a_rx_desc.h>
62
63 #ifndef RTWN_WITHOUT_UCODE
64 void
r12a_ratectl_tx_complete(struct rtwn_softc * sc,uint8_t * buf,int len)65 r12a_ratectl_tx_complete(struct rtwn_softc *sc, uint8_t *buf, int len)
66 {
67 struct ieee80211_ratectl_tx_status txs;
68 struct r12a_c2h_tx_rpt *rpt;
69 struct ieee80211_node *ni;
70 int ntries;
71
72 /* Skip Rx descriptor / report id / sequence fields. */
73 buf += sizeof(struct r92c_rx_stat) + 2;
74 len -= sizeof(struct r92c_rx_stat) + 2;
75
76 rpt = (struct r12a_c2h_tx_rpt *)buf;
77 if (len != sizeof(*rpt)) {
78 device_printf(sc->sc_dev,
79 "%s: wrong report size (%d, must be %zu)\n",
80 __func__, len, sizeof(*rpt));
81 return;
82 }
83
84 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR,
85 "%s: ccx report dump: 0: %02X, id: %02X, 2: %02X, queue time: "
86 "low %02X, high %02X, final ridx: %02X, rsvd: %04X\n",
87 __func__, rpt->txrptb0, rpt->macid, rpt->txrptb2,
88 rpt->queue_time_low, rpt->queue_time_high, rpt->final_rate,
89 rpt->reserved);
90
91 if (rpt->macid > sc->macid_limit) {
92 device_printf(sc->sc_dev,
93 "macid %u is too big; increase MACID_MAX limit\n",
94 rpt->macid);
95 return;
96 }
97
98 ntries = MS(rpt->txrptb2, R12A_TXRPTB2_RETRY_CNT);
99
100 ni = sc->node_list[rpt->macid];
101 if (ni != NULL) {
102 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: frame for macid %u was"
103 "%s sent (%d retries)\n", __func__, rpt->macid,
104 (rpt->txrptb0 & (R12A_TXRPTB0_RETRY_OVER |
105 R12A_TXRPTB0_LIFE_EXPIRE)) ? " not" : "", ntries);
106
107 txs.flags = IEEE80211_RATECTL_STATUS_LONG_RETRY |
108 IEEE80211_RATECTL_STATUS_FINAL_RATE;
109 txs.long_retries = ntries;
110 if (RTWN_RATE_IS_HT(rpt->final_rate)) { /* MCS */
111 txs.final_rate = RTWN_RIDX_TO_MCS(rpt->final_rate);
112 txs.final_rate |= IEEE80211_RATE_MCS;
113 } else
114 txs.final_rate = ridx2rate[rpt->final_rate];
115 if (rpt->txrptb0 & R12A_TXRPTB0_RETRY_OVER)
116 txs.status = IEEE80211_RATECTL_TX_FAIL_LONG;
117 else if (rpt->txrptb0 & R12A_TXRPTB0_LIFE_EXPIRE)
118 txs.status = IEEE80211_RATECTL_TX_FAIL_EXPIRED;
119 else
120 txs.status = IEEE80211_RATECTL_TX_SUCCESS;
121 ieee80211_ratectl_tx_complete(ni, &txs);
122 } else {
123 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR,
124 "%s: macid %u, ni is NULL\n", __func__, rpt->macid);
125 }
126 }
127
128 void
r12a_handle_c2h_report(struct rtwn_softc * sc,uint8_t * buf,int len)129 r12a_handle_c2h_report(struct rtwn_softc *sc, uint8_t *buf, int len)
130 {
131 struct r12a_softc *rs = sc->sc_priv;
132
133 /* Skip Rx descriptor. */
134 buf += sizeof(struct r92c_rx_stat);
135 len -= sizeof(struct r92c_rx_stat);
136
137 if (len < 2) {
138 device_printf(sc->sc_dev, "C2H report too short (len %d)\n",
139 len);
140 return;
141 }
142 len -= 2;
143
144 switch (buf[0]) { /* command id */
145 case R12A_C2H_TX_REPORT:
146 /* NOTREACHED */
147 KASSERT(0, ("use handle_tx_report() instead of %s\n",
148 __func__));
149 break;
150 case R12A_C2H_IQK_FINISHED:
151 RTWN_DPRINTF(sc, RTWN_DEBUG_CALIB,
152 "FW IQ calibration finished\n");
153 rs->rs_flags &= ~R12A_IQK_RUNNING;
154 break;
155 default:
156 device_printf(sc->sc_dev,
157 "%s: C2H report %u was not handled\n",
158 __func__, buf[0]);
159 }
160 }
161 #else
162 void
r12a_ratectl_tx_complete(struct rtwn_softc * sc,uint8_t * buf,int len)163 r12a_ratectl_tx_complete(struct rtwn_softc *sc, uint8_t *buf, int len)
164 {
165 /* Should not happen. */
166 device_printf(sc->sc_dev, "%s: called\n", __func__);
167 }
168
169 void
r12a_handle_c2h_report(struct rtwn_softc * sc,uint8_t * buf,int len)170 r12a_handle_c2h_report(struct rtwn_softc *sc, uint8_t *buf, int len)
171 {
172 /* Should not happen. */
173 device_printf(sc->sc_dev, "%s: called\n", __func__);
174 }
175 #endif
176
177 int
r12a_check_frame_checksum(struct rtwn_softc * sc,struct mbuf * m)178 r12a_check_frame_checksum(struct rtwn_softc *sc, struct mbuf *m)
179 {
180 struct r12a_softc *rs = sc->sc_priv;
181 struct r92c_rx_stat *stat;
182 uint32_t rxdw1;
183
184 stat = mtod(m, struct r92c_rx_stat *);
185 rxdw1 = le32toh(stat->rxdw1);
186 if (rxdw1 & R12A_RXDW1_CKSUM) {
187 RTWN_DPRINTF(sc, RTWN_DEBUG_RECV,
188 "%s: %s/%s checksum is %s\n", __func__,
189 (rxdw1 & R12A_RXDW1_UDP) ? "UDP" : "TCP",
190 (rxdw1 & R12A_RXDW1_IPV6) ? "IPv6" : "IP",
191 (rxdw1 & R12A_RXDW1_CKSUM_ERR) ? "invalid" : "valid");
192
193 if (rxdw1 & R12A_RXDW1_CKSUM_ERR)
194 return (-1);
195
196 if ((rxdw1 & R12A_RXDW1_IPV6) ?
197 (rs->rs_flags & R12A_RXCKSUM6_EN) :
198 (rs->rs_flags & R12A_RXCKSUM_EN)) {
199 m->m_pkthdr.csum_flags = CSUM_IP_CHECKED |
200 CSUM_IP_VALID | CSUM_DATA_VALID | CSUM_PSEUDO_HDR;
201 m->m_pkthdr.csum_data = 0xffff;
202 }
203 }
204
205 return (0);
206 }
207
208 uint8_t
r12a_rx_radiotap_flags(const void * buf)209 r12a_rx_radiotap_flags(const void *buf)
210 {
211 const struct r92c_rx_stat *stat = buf;
212 uint8_t flags, rate;
213
214 if (!(stat->rxdw4 & htole32(R12A_RXDW4_SPLCP)))
215 return (0);
216 rate = MS(le32toh(stat->rxdw3), R12A_RXDW3_RATE);
217 if (RTWN_RATE_IS_CCK(rate))
218 flags = IEEE80211_RADIOTAP_F_SHORTPRE;
219 else
220 flags = IEEE80211_RADIOTAP_F_SHORTGI;
221 return (flags);
222 }
223
224 void
r12a_get_rx_stats(struct rtwn_softc * sc,struct ieee80211_rx_stats * rxs,const void * desc,const void * physt_ptr)225 r12a_get_rx_stats(struct rtwn_softc *sc, struct ieee80211_rx_stats *rxs,
226 const void *desc, const void *physt_ptr)
227 {
228 const struct r92c_rx_stat *stat = desc;
229 const struct r12a_rx_phystat *physt = physt_ptr;
230 uint32_t rxdw0, rxdw1, rxdw3, rxdw4;
231 uint8_t rate;
232
233 rxdw0 = le32toh(stat->rxdw0);
234 rxdw1 = le32toh(stat->rxdw1);
235 rxdw3 = le32toh(stat->rxdw3);
236 rxdw4 = le32toh(stat->rxdw4);
237 rate = MS(rxdw3, R12A_RXDW3_RATE);
238
239 /* TODO: STBC */
240 if (rxdw4 & R12A_RXDW4_LDPC)
241 rxs->c_pktflags |= IEEE80211_RX_F_LDPC;
242 if (rxdw1 & R12A_RXDW1_AMPDU) {
243 if (rxdw0 & R92C_RXDW0_PHYST)
244 rxs->c_pktflags |= IEEE80211_RX_F_AMPDU;
245 else
246 rxs->c_pktflags |= IEEE80211_RX_F_AMPDU_MORE;
247 }
248
249 if ((rxdw4 & R12A_RXDW4_SPLCP) &&
250 (RTWN_RATE_IS_HT(rate) || RTWN_RATE_IS_VHT(rate)))
251 rxs->c_pktflags |= IEEE80211_RX_F_SHORTGI;
252
253 switch (MS(rxdw4, R12A_RXDW4_BW)) {
254 case R12A_RXDW4_BW20:
255 rxs->c_width = IEEE80211_RX_FW_20MHZ;
256 break;
257 case R12A_RXDW4_BW40:
258 rxs->c_width = IEEE80211_RX_FW_40MHZ;
259 break;
260 case R12A_RXDW4_BW80:
261 rxs->c_width = IEEE80211_RX_FW_80MHZ;
262 break;
263 default:
264 break;
265 }
266
267 if (RTWN_RATE_IS_CCK(rate))
268 rxs->c_phytype = IEEE80211_RX_FP_11B;
269 else {
270 int is5ghz;
271
272 /* XXX magic */
273 /* XXX check with RTL8812AU */
274 is5ghz = (physt->cfosho[2] != 0x01);
275
276 if (RTWN_RATE_IS_CCK(rate) || RTWN_RATE_IS_OFDM(rate)) {
277 if (is5ghz)
278 rxs->c_phytype = IEEE80211_RX_FP_11A;
279 else
280 rxs->c_phytype = IEEE80211_RX_FP_11G;
281 } else if (RTWN_RATE_IS_HT(rate)) {
282 if (is5ghz)
283 rxs->c_phytype = IEEE80211_RX_FP_11NA;
284 else
285 rxs->c_phytype = IEEE80211_RX_FP_11NG;
286 } else if (RTWN_RATE_IS_VHT(rate)) {
287 /* TODO: there's no FP_VHT_5GHZ yet */
288 rxs->c_phytype = IEEE80211_RX_FP_11NA;
289 }
290 }
291
292 /* Map HW rate index to 802.11 rate. */
293 if (RTWN_RATE_IS_CCK(rate) || RTWN_RATE_IS_OFDM(rate)) {
294 rxs->c_rate = ridx2rate[rate];
295 if (RTWN_RATE_IS_CCK(rate))
296 rxs->c_pktflags |= IEEE80211_RX_F_CCK;
297 else
298 rxs->c_pktflags |= IEEE80211_RX_F_OFDM;
299 } else if (RTWN_RATE_IS_HT(rate)) { /* MCS0~15. */
300 rxs->c_rate =
301 IEEE80211_RATE_MCS | RTWN_RIDX_TO_MCS(rate);
302 rxs->c_pktflags |= IEEE80211_RX_F_HT;
303 } else if (RTWN_RATE_IS_VHT(rate)) {
304 /* XXX: need to revisit VHT rate representation */
305 rxs->c_vhtnss = (rate - RTWN_RIDX_VHT_MCS_SHIFT) / 10;
306 rxs->c_rate = (rate - RTWN_RIDX_VHT_MCS_SHIFT) % 10;
307 rxs->c_pktflags |= IEEE80211_RX_F_VHT;
308 }
309
310 /*
311 * XXX always zero for RTL8821AU
312 * (vendor driver does not check this field)
313 */
314 #if 0
315 rxs->r_flags |= IEEE80211_R_IEEE | IEEE80211_R_FREQ;
316 rxs->r_flags |= IEEE80211_R_BAND;
317 rxs->c_ieee = MS(le16toh(physt->phyw1), R12A_PHYW1_CHAN);
318 rxs->c_freq = ieee80211_ieee2mhz(rxs->c_ieee,
319 (rxs->c_ieee < 36) ? IEEE80211_CHAN_2GHZ : IEEE80211_CHAN_5GHZ);
320 rxs->c_band = (rxs->c_ieee < 36) ? IEEE80211_CHAN_2GHZ : IEEE80211_CHAN_5GHZ;
321 #endif
322 }
323