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 __FBSDID("$FreeBSD$"); 29 30 #include "opt_wlan.h" 31 32 #include <sys/param.h> 33 #include <sys/lock.h> 34 #include <sys/mutex.h> 35 #include <sys/mbuf.h> 36 #include <sys/kernel.h> 37 #include <sys/socket.h> 38 #include <sys/systm.h> 39 #include <sys/malloc.h> 40 #include <sys/queue.h> 41 #include <sys/taskqueue.h> 42 #include <sys/bus.h> 43 #include <sys/endian.h> 44 #include <sys/linker.h> 45 46 #include <net/if.h> 47 #include <net/ethernet.h> 48 #include <net/if_media.h> 49 50 #include <net80211/ieee80211_var.h> 51 #include <net80211/ieee80211_radiotap.h> 52 #include <net80211/ieee80211_ratectl.h> 53 54 #include <dev/rtwn/if_rtwnreg.h> 55 #include <dev/rtwn/if_rtwnvar.h> 56 57 #include <dev/rtwn/if_rtwn_debug.h> 58 #include <dev/rtwn/if_rtwn_ridx.h> 59 60 #include <dev/rtwn/rtl8812a/r12a.h> 61 #include <dev/rtwn/rtl8812a/r12a_var.h> 62 #include <dev/rtwn/rtl8812a/r12a_fw_cmd.h> 63 #include <dev/rtwn/rtl8812a/r12a_rx_desc.h> 64 65 66 #ifndef RTWN_WITHOUT_UCODE 67 void 68 r12a_ratectl_tx_complete(struct rtwn_softc *sc, uint8_t *buf, int len) 69 { 70 #if __FreeBSD_version >= 1200012 71 struct ieee80211_ratectl_tx_status txs; 72 #endif 73 struct r12a_c2h_tx_rpt *rpt; 74 struct ieee80211_node *ni; 75 int ntries; 76 77 /* Skip Rx descriptor / report id / sequence fields. */ 78 buf += sizeof(struct r92c_rx_stat) + 2; 79 len -= sizeof(struct r92c_rx_stat) + 2; 80 81 rpt = (struct r12a_c2h_tx_rpt *)buf; 82 if (len != sizeof(*rpt)) { 83 device_printf(sc->sc_dev, 84 "%s: wrong report size (%d, must be %zu)\n", 85 __func__, len, sizeof(*rpt)); 86 return; 87 } 88 89 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 90 "%s: ccx report dump: 0: %02X, id: %02X, 2: %02X, queue time: " 91 "low %02X, high %02X, final ridx: %02X, rsvd: %04X\n", 92 __func__, rpt->txrptb0, rpt->macid, rpt->txrptb2, 93 rpt->queue_time_low, rpt->queue_time_high, rpt->final_rate, 94 rpt->reserved); 95 96 if (rpt->macid > sc->macid_limit) { 97 device_printf(sc->sc_dev, 98 "macid %u is too big; increase MACID_MAX limit\n", 99 rpt->macid); 100 return; 101 } 102 103 ntries = MS(rpt->txrptb2, R12A_TXRPTB2_RETRY_CNT); 104 105 ni = sc->node_list[rpt->macid]; 106 if (ni != NULL) { 107 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: frame for macid %u was" 108 "%s sent (%d retries)\n", __func__, rpt->macid, 109 (rpt->txrptb0 & (R12A_TXRPTB0_RETRY_OVER | 110 R12A_TXRPTB0_LIFE_EXPIRE)) ? " not" : "", ntries); 111 112 #if __FreeBSD_version >= 1200012 113 txs.flags = IEEE80211_RATECTL_STATUS_LONG_RETRY | 114 IEEE80211_RATECTL_STATUS_FINAL_RATE; 115 txs.long_retries = ntries; 116 if (rpt->final_rate > RTWN_RIDX_OFDM54) { /* MCS */ 117 txs.final_rate = 118 rpt->final_rate - RTWN_RIDX_HT_MCS_SHIFT; 119 txs.final_rate |= IEEE80211_RATE_MCS; 120 } else 121 txs.final_rate = ridx2rate[rpt->final_rate]; 122 if (rpt->txrptb0 & R12A_TXRPTB0_RETRY_OVER) 123 txs.status = IEEE80211_RATECTL_TX_FAIL_LONG; 124 else if (rpt->txrptb0 & R12A_TXRPTB0_LIFE_EXPIRE) 125 txs.status = IEEE80211_RATECTL_TX_FAIL_EXPIRED; 126 else 127 txs.status = IEEE80211_RATECTL_TX_SUCCESS; 128 ieee80211_ratectl_tx_complete(ni, &txs); 129 #else 130 struct ieee80211vap *vap = ni->ni_vap; 131 if (rpt->txrptb0 & R12A_TXRPTB0_RETRY_OVER) { 132 ieee80211_ratectl_tx_complete(vap, ni, 133 IEEE80211_RATECTL_TX_FAILURE, &ntries, NULL); 134 } else { 135 ieee80211_ratectl_tx_complete(vap, ni, 136 IEEE80211_RATECTL_TX_SUCCESS, &ntries, NULL); 137 } 138 #endif 139 } else { 140 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 141 "%s: macid %u, ni is NULL\n", __func__, rpt->macid); 142 } 143 } 144 145 void 146 r12a_handle_c2h_report(struct rtwn_softc *sc, uint8_t *buf, int len) 147 { 148 struct r12a_softc *rs = sc->sc_priv; 149 150 /* Skip Rx descriptor. */ 151 buf += sizeof(struct r92c_rx_stat); 152 len -= sizeof(struct r92c_rx_stat); 153 154 if (len < 2) { 155 device_printf(sc->sc_dev, "C2H report too short (len %d)\n", 156 len); 157 return; 158 } 159 len -= 2; 160 161 switch (buf[0]) { /* command id */ 162 case R12A_C2H_TX_REPORT: 163 /* NOTREACHED */ 164 KASSERT(0, ("use handle_tx_report() instead of %s\n", 165 __func__)); 166 break; 167 case R12A_C2H_IQK_FINISHED: 168 RTWN_DPRINTF(sc, RTWN_DEBUG_CALIB, 169 "FW IQ calibration finished\n"); 170 rs->rs_flags &= ~R12A_IQK_RUNNING; 171 break; 172 default: 173 device_printf(sc->sc_dev, 174 "%s: C2H report %u was not handled\n", 175 __func__, buf[0]); 176 } 177 } 178 #else 179 void 180 r12a_ratectl_tx_complete(struct rtwn_softc *sc, uint8_t *buf, int len) 181 { 182 /* Should not happen. */ 183 device_printf(sc->sc_dev, "%s: called\n", __func__); 184 } 185 186 void 187 r12a_handle_c2h_report(struct rtwn_softc *sc, uint8_t *buf, int len) 188 { 189 /* Should not happen. */ 190 device_printf(sc->sc_dev, "%s: called\n", __func__); 191 } 192 #endif 193 194 int 195 r12a_check_frame_checksum(struct rtwn_softc *sc, struct mbuf *m) 196 { 197 struct r12a_softc *rs = sc->sc_priv; 198 struct r92c_rx_stat *stat; 199 uint32_t rxdw1; 200 201 stat = mtod(m, struct r92c_rx_stat *); 202 rxdw1 = le32toh(stat->rxdw1); 203 if (rxdw1 & R12A_RXDW1_CKSUM) { 204 RTWN_DPRINTF(sc, RTWN_DEBUG_RECV, 205 "%s: %s/%s checksum is %s\n", __func__, 206 (rxdw1 & R12A_RXDW1_UDP) ? "UDP" : "TCP", 207 (rxdw1 & R12A_RXDW1_IPV6) ? "IPv6" : "IP", 208 (rxdw1 & R12A_RXDW1_CKSUM_ERR) ? "invalid" : "valid"); 209 210 if (rxdw1 & R12A_RXDW1_CKSUM_ERR) 211 return (-1); 212 213 if ((rxdw1 & R12A_RXDW1_IPV6) ? 214 (rs->rs_flags & R12A_RXCKSUM6_EN) : 215 (rs->rs_flags & R12A_RXCKSUM_EN)) { 216 m->m_pkthdr.csum_flags = CSUM_IP_CHECKED | 217 CSUM_IP_VALID | CSUM_DATA_VALID | CSUM_PSEUDO_HDR; 218 m->m_pkthdr.csum_data = 0xffff; 219 } 220 } 221 222 return (0); 223 } 224 225 uint8_t 226 r12a_rx_radiotap_flags(const void *buf) 227 { 228 const struct r92c_rx_stat *stat = buf; 229 uint8_t flags, rate; 230 231 if (!(stat->rxdw4 & htole32(R12A_RXDW4_SPLCP))) 232 return (0); 233 rate = MS(le32toh(stat->rxdw3), R12A_RXDW3_RATE); 234 if (RTWN_RATE_IS_CCK(rate)) 235 flags = IEEE80211_RADIOTAP_F_SHORTPRE; 236 else 237 flags = IEEE80211_RADIOTAP_F_SHORTGI; 238 return (flags); 239 } 240 241 void 242 r12a_get_rx_stats(struct rtwn_softc *sc, struct ieee80211_rx_stats *rxs, 243 const void *desc, const void *physt_ptr) 244 { 245 const struct r92c_rx_stat *stat = desc; 246 const struct r12a_rx_phystat *physt = physt_ptr; 247 uint32_t rxdw0, rxdw1, rxdw3, rxdw4; 248 uint8_t rate; 249 250 rxdw0 = le32toh(stat->rxdw0); 251 rxdw1 = le32toh(stat->rxdw1); 252 rxdw3 = le32toh(stat->rxdw3); 253 rxdw4 = le32toh(stat->rxdw4); 254 rate = MS(rxdw3, R12A_RXDW3_RATE); 255 256 /* TODO: STBC */ 257 if (rxdw4 & R12A_RXDW4_LDPC) 258 rxs->c_pktflags |= IEEE80211_RX_F_LDPC; 259 if (rxdw1 & R12A_RXDW1_AMPDU) { 260 if (rxdw0 & R92C_RXDW0_PHYST) 261 rxs->c_pktflags |= IEEE80211_RX_F_AMPDU; 262 else 263 rxs->c_pktflags |= IEEE80211_RX_F_AMPDU_MORE; 264 } 265 266 if ((rxdw4 & R12A_RXDW4_SPLCP) && rate >= RTWN_RIDX_HT_MCS(0)) 267 rxs->c_pktflags |= IEEE80211_RX_F_SHORTGI; 268 269 switch (MS(rxdw4, R12A_RXDW4_BW)) { 270 case R12A_RXDW4_BW20: 271 rxs->c_width = IEEE80211_RX_FW_20MHZ; 272 break; 273 case R12A_RXDW4_BW40: 274 rxs->c_width = IEEE80211_RX_FW_40MHZ; 275 break; 276 case R12A_RXDW4_BW80: 277 rxs->c_width = IEEE80211_RX_FW_80MHZ; 278 break; 279 default: 280 break; 281 } 282 283 if (RTWN_RATE_IS_CCK(rate)) 284 rxs->c_phytype = IEEE80211_RX_FP_11B; 285 else { 286 int is5ghz; 287 288 /* XXX magic */ 289 /* XXX check with RTL8812AU */ 290 is5ghz = (physt->cfosho[2] != 0x01); 291 292 if (rate < RTWN_RIDX_HT_MCS(0)) { 293 if (is5ghz) 294 rxs->c_phytype = IEEE80211_RX_FP_11A; 295 else 296 rxs->c_phytype = IEEE80211_RX_FP_11G; 297 } else { 298 if (is5ghz) 299 rxs->c_phytype = IEEE80211_RX_FP_11NA; 300 else 301 rxs->c_phytype = IEEE80211_RX_FP_11NG; 302 } 303 } 304 305 /* Map HW rate index to 802.11 rate. */ 306 if (rate < RTWN_RIDX_HT_MCS(0)) { 307 rxs->c_rate = ridx2rate[rate]; 308 if (RTWN_RATE_IS_CCK(rate)) 309 rxs->c_pktflags |= IEEE80211_RX_F_CCK; 310 else 311 rxs->c_pktflags |= IEEE80211_RX_F_OFDM; 312 } else { /* MCS0~15. */ 313 /* TODO: VHT rates */ 314 rxs->c_rate = 315 IEEE80211_RATE_MCS | (rate - RTWN_RIDX_HT_MCS_SHIFT); 316 rxs->c_pktflags |= IEEE80211_RX_F_HT; 317 } 318 319 /* 320 * XXX always zero for RTL8821AU 321 * (vendor driver does not check this field) 322 */ 323 #if 0 324 rxs->r_flags |= IEEE80211_R_IEEE | IEEE80211_R_FREQ; 325 rxs->c_ieee = MS(le16toh(physt->phyw1), R12A_PHYW1_CHAN); 326 rxs->c_freq = ieee80211_ieee2mhz(rxs->c_ieee, 327 (rxs->c_ieee < 36) ? IEEE80211_CHAN_2GHZ : IEEE80211_CHAN_5GHZ); 328 #endif 329 } 330