1 /* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr> 5 * Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org> 6 * Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 #include <sys/cdefs.h> 22 __FBSDID("$FreeBSD$"); 23 24 #include "opt_wlan.h" 25 26 #include <sys/param.h> 27 #include <sys/lock.h> 28 #include <sys/mutex.h> 29 #include <sys/mbuf.h> 30 #include <sys/kernel.h> 31 #include <sys/socket.h> 32 #include <sys/systm.h> 33 #include <sys/malloc.h> 34 #include <sys/queue.h> 35 #include <sys/taskqueue.h> 36 #include <sys/bus.h> 37 #include <sys/endian.h> 38 #include <sys/linker.h> 39 40 #include <net/if.h> 41 #include <net/ethernet.h> 42 #include <net/if_media.h> 43 44 #include <net80211/ieee80211_var.h> 45 #include <net80211/ieee80211_radiotap.h> 46 #include <net80211/ieee80211_ratectl.h> 47 48 #include <dev/rtwn/if_rtwnreg.h> 49 #include <dev/rtwn/if_rtwnvar.h> 50 51 #include <dev/rtwn/if_rtwn_debug.h> 52 #include <dev/rtwn/if_rtwn_ridx.h> 53 54 #include <dev/rtwn/rtl8192c/r92c.h> 55 #include <dev/rtwn/rtl8188e/r88e.h> 56 #include <dev/rtwn/rtl8188e/r88e_rx_desc.h> 57 58 int 59 r88e_classify_intr(struct rtwn_softc *sc, void *buf, int len) 60 { 61 struct r92c_rx_stat *stat = buf; 62 int report_sel = MS(le32toh(stat->rxdw3), R88E_RXDW3_RPT); 63 64 switch (report_sel) { 65 case R88E_RXDW3_RPT_RX: 66 return (RTWN_RX_DATA); 67 case R88E_RXDW3_RPT_TX1: /* per-packet Tx report */ 68 case R88E_RXDW3_RPT_TX2: /* periodical Tx report */ 69 return (RTWN_RX_TX_REPORT); 70 case R88E_RXDW3_RPT_HIS: 71 return (RTWN_RX_OTHER); 72 default: /* shut up the compiler */ 73 return (RTWN_RX_DATA); 74 } 75 } 76 77 void 78 r88e_ratectl_tx_complete(struct rtwn_softc *sc, uint8_t *buf, int len) 79 { 80 #if __FreeBSD_version >= 1200012 81 struct ieee80211_ratectl_tx_status txs; 82 #endif 83 struct r88e_tx_rpt_ccx *rpt; 84 struct ieee80211_node *ni; 85 uint8_t macid; 86 int ntries; 87 88 /* Skip Rx descriptor. */ 89 buf += sizeof(struct r92c_rx_stat); 90 len -= sizeof(struct r92c_rx_stat); 91 92 rpt = (struct r88e_tx_rpt_ccx *)buf; 93 if (len != sizeof(*rpt)) { 94 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 95 "%s: wrong report size (%d, must be %zu)\n", 96 __func__, len, sizeof(*rpt)); 97 return; 98 } 99 100 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 101 "%s: ccx report dump: 0: %02X, 1: %02X, 2: %02X, queue time: " 102 "low %02X, high %02X, final ridx: %02X, 6: %02X, 7: %02X\n", 103 __func__, rpt->rptb0, rpt->rptb1, rpt->rptb2, rpt->queue_time_low, 104 rpt->queue_time_high, rpt->final_rate, rpt->rptb6, rpt->rptb7); 105 106 macid = MS(rpt->rptb1, R88E_RPTB1_MACID); 107 if (macid > sc->macid_limit) { 108 device_printf(sc->sc_dev, 109 "macid %u is too big; increase MACID_MAX limit\n", 110 macid); 111 return; 112 } 113 114 ntries = MS(rpt->rptb2, R88E_RPTB2_RETRY_CNT); 115 116 ni = sc->node_list[macid]; 117 if (ni != NULL) { 118 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: frame for macid %u was" 119 "%s sent (%d retries)\n", __func__, macid, 120 (rpt->rptb1 & R88E_RPTB1_PKT_OK) ? "" : " not", 121 ntries); 122 123 #if __FreeBSD_version >= 1200012 124 txs.flags = IEEE80211_RATECTL_STATUS_LONG_RETRY | 125 IEEE80211_RATECTL_STATUS_FINAL_RATE; 126 txs.long_retries = ntries; 127 if (rpt->final_rate > RTWN_RIDX_OFDM54) { /* MCS */ 128 txs.final_rate = 129 rpt->final_rate - RTWN_RIDX_HT_MCS_SHIFT; 130 txs.final_rate |= IEEE80211_RATE_MCS; 131 } else 132 txs.final_rate = ridx2rate[rpt->final_rate]; 133 if (rpt->rptb1 & R88E_RPTB1_PKT_OK) 134 txs.status = IEEE80211_RATECTL_TX_SUCCESS; 135 else if (rpt->rptb2 & R88E_RPTB2_RETRY_OVER) 136 txs.status = IEEE80211_RATECTL_TX_FAIL_LONG; 137 else if (rpt->rptb2 & R88E_RPTB2_LIFE_EXPIRE) 138 txs.status = IEEE80211_RATECTL_TX_FAIL_EXPIRED; 139 else 140 txs.status = IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED; 141 ieee80211_ratectl_tx_complete(ni, &txs); 142 #else 143 struct ieee80211vap *vap = ni->ni_vap; 144 if (rpt->rptb1 & R88E_RPTB1_PKT_OK) { 145 ieee80211_ratectl_tx_complete(vap, ni, 146 IEEE80211_RATECTL_TX_SUCCESS, &ntries, NULL); 147 } else { 148 ieee80211_ratectl_tx_complete(vap, ni, 149 IEEE80211_RATECTL_TX_FAILURE, &ntries, NULL); 150 } 151 #endif 152 } else { 153 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: macid %u, ni is NULL\n", 154 __func__, macid); 155 } 156 } 157 158 void 159 r88e_handle_c2h_report(struct rtwn_softc *sc, uint8_t *buf, int len) 160 { 161 162 /* Skip Rx descriptor. */ 163 buf += sizeof(struct r92c_rx_stat); 164 len -= sizeof(struct r92c_rx_stat); 165 166 if (len != R88E_INTR_MSG_LEN) { 167 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 168 "%s: wrong interrupt message size (%d, must be %d)\n", 169 __func__, len, R88E_INTR_MSG_LEN); 170 return; 171 } 172 173 /* XXX TODO */ 174 } 175 176 int8_t 177 r88e_get_rssi_cck(struct rtwn_softc *sc, void *physt) 178 { 179 struct r88e_rx_phystat *phy = (struct r88e_rx_phystat *)physt; 180 int8_t lna_idx, vga_idx, rssi; 181 182 lna_idx = (phy->agc_rpt & 0xe0) >> 5; 183 vga_idx = (phy->agc_rpt & 0x1f); 184 rssi = 6 - 2 * vga_idx; 185 186 switch (lna_idx) { 187 case 7: 188 if (vga_idx > 27) 189 rssi = -100 + 6; 190 else 191 rssi += -100 + 2 * 27; 192 break; 193 case 6: 194 rssi += -48 + 2 * 2; 195 break; 196 case 5: 197 rssi += -42 + 2 * 7; 198 break; 199 case 4: 200 rssi += -36 + 2 * 7; 201 break; 202 case 3: 203 rssi += -24 + 2 * 7; 204 break; 205 case 2: 206 rssi += -6 + 2 * 5; 207 if (sc->sc_flags & RTWN_FLAG_CCK_HIPWR) 208 rssi -= 6; 209 break; 210 case 1: 211 rssi += 8; 212 break; 213 case 0: 214 rssi += 14; 215 break; 216 } 217 218 return (rssi); 219 } 220 221 int8_t 222 r88e_get_rssi_ofdm(struct rtwn_softc *sc, void *physt) 223 { 224 struct r88e_rx_phystat *phy = (struct r88e_rx_phystat *)physt; 225 int rssi; 226 227 /* Get average RSSI. */ 228 rssi = ((phy->sig_qual >> 1) & 0x7f) - 110; 229 230 return (rssi); 231 } 232 233 void 234 r88e_get_rx_stats(struct rtwn_softc *sc, struct ieee80211_rx_stats *rxs, 235 const void *desc, const void *physt_ptr) 236 { 237 const struct r88e_rx_phystat *physt = physt_ptr; 238 239 r92c_get_rx_stats(sc, rxs, desc, physt_ptr); 240 241 if (!sc->sc_ht40) { /* XXX center channel */ 242 rxs->r_flags |= IEEE80211_R_IEEE | IEEE80211_R_FREQ; 243 rxs->c_ieee = physt->chan; 244 rxs->c_freq = ieee80211_ieee2mhz(rxs->c_ieee, 245 IEEE80211_CHAN_2GHZ); 246 } 247 } 248