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 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 (rpt->final_rate > RTWN_RIDX_OFDM54) { /* MCS */ 111 txs.final_rate = 112 rpt->final_rate - RTWN_RIDX_HT_MCS_SHIFT; 113 txs.final_rate |= IEEE80211_RATE_MCS; 114 } else 115 txs.final_rate = ridx2rate[rpt->final_rate]; 116 if (rpt->txrptb0 & R12A_TXRPTB0_RETRY_OVER) 117 txs.status = IEEE80211_RATECTL_TX_FAIL_LONG; 118 else if (rpt->txrptb0 & R12A_TXRPTB0_LIFE_EXPIRE) 119 txs.status = IEEE80211_RATECTL_TX_FAIL_EXPIRED; 120 else 121 txs.status = IEEE80211_RATECTL_TX_SUCCESS; 122 ieee80211_ratectl_tx_complete(ni, &txs); 123 } else { 124 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 125 "%s: macid %u, ni is NULL\n", __func__, rpt->macid); 126 } 127 } 128 129 void 130 r12a_handle_c2h_report(struct rtwn_softc *sc, uint8_t *buf, int len) 131 { 132 struct r12a_softc *rs = sc->sc_priv; 133 134 /* Skip Rx descriptor. */ 135 buf += sizeof(struct r92c_rx_stat); 136 len -= sizeof(struct r92c_rx_stat); 137 138 if (len < 2) { 139 device_printf(sc->sc_dev, "C2H report too short (len %d)\n", 140 len); 141 return; 142 } 143 len -= 2; 144 145 switch (buf[0]) { /* command id */ 146 case R12A_C2H_TX_REPORT: 147 /* NOTREACHED */ 148 KASSERT(0, ("use handle_tx_report() instead of %s\n", 149 __func__)); 150 break; 151 case R12A_C2H_IQK_FINISHED: 152 RTWN_DPRINTF(sc, RTWN_DEBUG_CALIB, 153 "FW IQ calibration finished\n"); 154 rs->rs_flags &= ~R12A_IQK_RUNNING; 155 break; 156 default: 157 device_printf(sc->sc_dev, 158 "%s: C2H report %u was not handled\n", 159 __func__, buf[0]); 160 } 161 } 162 #else 163 void 164 r12a_ratectl_tx_complete(struct rtwn_softc *sc, uint8_t *buf, int len) 165 { 166 /* Should not happen. */ 167 device_printf(sc->sc_dev, "%s: called\n", __func__); 168 } 169 170 void 171 r12a_handle_c2h_report(struct rtwn_softc *sc, uint8_t *buf, int len) 172 { 173 /* Should not happen. */ 174 device_printf(sc->sc_dev, "%s: called\n", __func__); 175 } 176 #endif 177 178 int 179 r12a_check_frame_checksum(struct rtwn_softc *sc, struct mbuf *m) 180 { 181 struct r12a_softc *rs = sc->sc_priv; 182 struct r92c_rx_stat *stat; 183 uint32_t rxdw1; 184 185 stat = mtod(m, struct r92c_rx_stat *); 186 rxdw1 = le32toh(stat->rxdw1); 187 if (rxdw1 & R12A_RXDW1_CKSUM) { 188 RTWN_DPRINTF(sc, RTWN_DEBUG_RECV, 189 "%s: %s/%s checksum is %s\n", __func__, 190 (rxdw1 & R12A_RXDW1_UDP) ? "UDP" : "TCP", 191 (rxdw1 & R12A_RXDW1_IPV6) ? "IPv6" : "IP", 192 (rxdw1 & R12A_RXDW1_CKSUM_ERR) ? "invalid" : "valid"); 193 194 if (rxdw1 & R12A_RXDW1_CKSUM_ERR) 195 return (-1); 196 197 if ((rxdw1 & R12A_RXDW1_IPV6) ? 198 (rs->rs_flags & R12A_RXCKSUM6_EN) : 199 (rs->rs_flags & R12A_RXCKSUM_EN)) { 200 m->m_pkthdr.csum_flags = CSUM_IP_CHECKED | 201 CSUM_IP_VALID | CSUM_DATA_VALID | CSUM_PSEUDO_HDR; 202 m->m_pkthdr.csum_data = 0xffff; 203 } 204 } 205 206 return (0); 207 } 208 209 uint8_t 210 r12a_rx_radiotap_flags(const void *buf) 211 { 212 const struct r92c_rx_stat *stat = buf; 213 uint8_t flags, rate; 214 215 if (!(stat->rxdw4 & htole32(R12A_RXDW4_SPLCP))) 216 return (0); 217 rate = MS(le32toh(stat->rxdw3), R12A_RXDW3_RATE); 218 if (RTWN_RATE_IS_CCK(rate)) 219 flags = IEEE80211_RADIOTAP_F_SHORTPRE; 220 else 221 flags = IEEE80211_RADIOTAP_F_SHORTGI; 222 return (flags); 223 } 224 225 void 226 r12a_get_rx_stats(struct rtwn_softc *sc, struct ieee80211_rx_stats *rxs, 227 const void *desc, const void *physt_ptr) 228 { 229 const struct r92c_rx_stat *stat = desc; 230 const struct r12a_rx_phystat *physt = physt_ptr; 231 uint32_t rxdw0, rxdw1, rxdw3, rxdw4; 232 uint8_t rate; 233 234 rxdw0 = le32toh(stat->rxdw0); 235 rxdw1 = le32toh(stat->rxdw1); 236 rxdw3 = le32toh(stat->rxdw3); 237 rxdw4 = le32toh(stat->rxdw4); 238 rate = MS(rxdw3, R12A_RXDW3_RATE); 239 240 /* TODO: STBC */ 241 if (rxdw4 & R12A_RXDW4_LDPC) 242 rxs->c_pktflags |= IEEE80211_RX_F_LDPC; 243 if (rxdw1 & R12A_RXDW1_AMPDU) { 244 if (rxdw0 & R92C_RXDW0_PHYST) 245 rxs->c_pktflags |= IEEE80211_RX_F_AMPDU; 246 else 247 rxs->c_pktflags |= IEEE80211_RX_F_AMPDU_MORE; 248 } 249 250 if ((rxdw4 & R12A_RXDW4_SPLCP) && rate >= RTWN_RIDX_HT_MCS(0)) 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 (rate < RTWN_RIDX_HT_MCS(0)) { 277 if (is5ghz) 278 rxs->c_phytype = IEEE80211_RX_FP_11A; 279 else 280 rxs->c_phytype = IEEE80211_RX_FP_11G; 281 } else { 282 if (is5ghz) 283 rxs->c_phytype = IEEE80211_RX_FP_11NA; 284 else 285 rxs->c_phytype = IEEE80211_RX_FP_11NG; 286 } 287 } 288 289 /* Map HW rate index to 802.11 rate. */ 290 if (rate < RTWN_RIDX_HT_MCS(0)) { 291 rxs->c_rate = ridx2rate[rate]; 292 if (RTWN_RATE_IS_CCK(rate)) 293 rxs->c_pktflags |= IEEE80211_RX_F_CCK; 294 else 295 rxs->c_pktflags |= IEEE80211_RX_F_OFDM; 296 } else { /* MCS0~15. */ 297 /* TODO: VHT rates */ 298 rxs->c_rate = 299 IEEE80211_RATE_MCS | (rate - RTWN_RIDX_HT_MCS_SHIFT); 300 rxs->c_pktflags |= IEEE80211_RX_F_HT; 301 } 302 303 /* 304 * XXX always zero for RTL8821AU 305 * (vendor driver does not check this field) 306 */ 307 #if 0 308 rxs->r_flags |= IEEE80211_R_IEEE | IEEE80211_R_FREQ; 309 rxs->r_flags |= IEEE80211_R_BAND; 310 rxs->c_ieee = MS(le16toh(physt->phyw1), R12A_PHYW1_CHAN); 311 rxs->c_freq = ieee80211_ieee2mhz(rxs->c_ieee, 312 (rxs->c_ieee < 36) ? IEEE80211_CHAN_2GHZ : IEEE80211_CHAN_5GHZ); 313 rxs->c_band = (rxs->c_ieee < 36) ? IEEE80211_CHAN_2GHZ : IEEE80211_CHAN_5GHZ; 314 #endif 315 } 316