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 59 int 60 r88e_classify_intr(struct rtwn_softc *sc, void *buf, int len) 61 { 62 struct r92c_rx_stat *stat = buf; 63 int report_sel = MS(le32toh(stat->rxdw3), R88E_RXDW3_RPT); 64 65 switch (report_sel) { 66 case R88E_RXDW3_RPT_RX: 67 return (RTWN_RX_DATA); 68 case R88E_RXDW3_RPT_TX1: /* per-packet Tx report */ 69 case R88E_RXDW3_RPT_TX2: /* periodical Tx report */ 70 return (RTWN_RX_TX_REPORT); 71 case R88E_RXDW3_RPT_HIS: 72 return (RTWN_RX_OTHER); 73 default: /* shut up the compiler */ 74 return (RTWN_RX_DATA); 75 } 76 } 77 78 void 79 r88e_ratectl_tx_complete(struct rtwn_softc *sc, uint8_t *buf, int len) 80 { 81 #if __FreeBSD_version >= 1200012 82 struct ieee80211_ratectl_tx_status txs; 83 #endif 84 struct r88e_tx_rpt_ccx *rpt; 85 struct ieee80211_node *ni; 86 uint8_t macid; 87 int ntries; 88 89 /* Skip Rx descriptor. */ 90 buf += sizeof(struct r92c_rx_stat); 91 len -= sizeof(struct r92c_rx_stat); 92 93 rpt = (struct r88e_tx_rpt_ccx *)buf; 94 if (len != sizeof(*rpt)) { 95 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 96 "%s: wrong report size (%d, must be %zu)\n", 97 __func__, len, sizeof(*rpt)); 98 return; 99 } 100 101 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 102 "%s: ccx report dump: 0: %02X, 1: %02X, 2: %02X, queue time: " 103 "low %02X, high %02X, final ridx: %02X, 6: %02X, 7: %02X\n", 104 __func__, rpt->rptb0, rpt->rptb1, rpt->rptb2, rpt->queue_time_low, 105 rpt->queue_time_high, rpt->final_rate, rpt->rptb6, rpt->rptb7); 106 107 macid = MS(rpt->rptb1, R88E_RPTB1_MACID); 108 if (macid > sc->macid_limit) { 109 device_printf(sc->sc_dev, 110 "macid %u is too big; increase MACID_MAX limit\n", 111 macid); 112 return; 113 } 114 115 ntries = MS(rpt->rptb2, R88E_RPTB2_RETRY_CNT); 116 117 ni = sc->node_list[macid]; 118 if (ni != NULL) { 119 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: frame for macid %u was" 120 "%s sent (%d retries)\n", __func__, macid, 121 (rpt->rptb1 & R88E_RPTB1_PKT_OK) ? "" : " not", 122 ntries); 123 124 #if __FreeBSD_version >= 1200012 125 txs.flags = IEEE80211_RATECTL_STATUS_LONG_RETRY | 126 IEEE80211_RATECTL_STATUS_FINAL_RATE; 127 txs.long_retries = ntries; 128 if (rpt->final_rate > RTWN_RIDX_OFDM54) { /* MCS */ 129 txs.final_rate = 130 rpt->final_rate - RTWN_RIDX_HT_MCS_SHIFT; 131 txs.final_rate |= IEEE80211_RATE_MCS; 132 } else 133 txs.final_rate = ridx2rate[rpt->final_rate]; 134 if (rpt->rptb1 & R88E_RPTB1_PKT_OK) 135 txs.status = IEEE80211_RATECTL_TX_SUCCESS; 136 else if (rpt->rptb2 & R88E_RPTB2_RETRY_OVER) 137 txs.status = IEEE80211_RATECTL_TX_FAIL_LONG; 138 else if (rpt->rptb2 & R88E_RPTB2_LIFE_EXPIRE) 139 txs.status = IEEE80211_RATECTL_TX_FAIL_EXPIRED; 140 else 141 txs.status = IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED; 142 ieee80211_ratectl_tx_complete(ni, &txs); 143 #else 144 struct ieee80211vap *vap = ni->ni_vap; 145 if (rpt->rptb1 & R88E_RPTB1_PKT_OK) { 146 ieee80211_ratectl_tx_complete(vap, ni, 147 IEEE80211_RATECTL_TX_SUCCESS, &ntries, NULL); 148 } else { 149 ieee80211_ratectl_tx_complete(vap, ni, 150 IEEE80211_RATECTL_TX_FAILURE, &ntries, NULL); 151 } 152 #endif 153 } else { 154 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: macid %u, ni is NULL\n", 155 __func__, macid); 156 } 157 } 158 159 void 160 r88e_handle_c2h_report(struct rtwn_softc *sc, uint8_t *buf, int len) 161 { 162 163 /* Skip Rx descriptor. */ 164 buf += sizeof(struct r92c_rx_stat); 165 len -= sizeof(struct r92c_rx_stat); 166 167 if (len != R88E_INTR_MSG_LEN) { 168 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 169 "%s: wrong interrupt message size (%d, must be %d)\n", 170 __func__, len, R88E_INTR_MSG_LEN); 171 return; 172 } 173 174 /* XXX TODO */ 175 } 176 177 int8_t 178 r88e_get_rssi_cck(struct rtwn_softc *sc, void *physt) 179 { 180 struct r88e_rx_phystat *phy = (struct r88e_rx_phystat *)physt; 181 int8_t lna_idx, vga_idx, rssi; 182 183 lna_idx = (phy->agc_rpt & 0xe0) >> 5; 184 vga_idx = (phy->agc_rpt & 0x1f); 185 rssi = 6 - 2 * vga_idx; 186 187 switch (lna_idx) { 188 case 7: 189 if (vga_idx > 27) 190 rssi = -100 + 6; 191 else 192 rssi += -100 + 2 * 27; 193 break; 194 case 6: 195 rssi += -48 + 2 * 2; 196 break; 197 case 5: 198 rssi += -42 + 2 * 7; 199 break; 200 case 4: 201 rssi += -36 + 2 * 7; 202 break; 203 case 3: 204 rssi += -24 + 2 * 7; 205 break; 206 case 2: 207 rssi += -6 + 2 * 5; 208 if (sc->sc_flags & RTWN_FLAG_CCK_HIPWR) 209 rssi -= 6; 210 break; 211 case 1: 212 rssi += 8; 213 break; 214 case 0: 215 rssi += 14; 216 break; 217 } 218 219 return (rssi); 220 } 221 222 int8_t 223 r88e_get_rssi_ofdm(struct rtwn_softc *sc, void *physt) 224 { 225 struct r88e_rx_phystat *phy = (struct r88e_rx_phystat *)physt; 226 int rssi; 227 228 /* Get average RSSI. */ 229 rssi = ((phy->sig_qual >> 1) & 0x7f) - 110; 230 231 return (rssi); 232 } 233 234 void 235 r88e_get_rx_stats(struct rtwn_softc *sc, struct ieee80211_rx_stats *rxs, 236 const void *desc, const void *physt_ptr) 237 { 238 const struct r88e_rx_phystat *physt = physt_ptr; 239 240 r92c_get_rx_stats(sc, rxs, desc, physt_ptr); 241 242 if (!sc->sc_ht40) { /* XXX center channel */ 243 rxs->r_flags |= IEEE80211_R_IEEE | IEEE80211_R_FREQ; 244 rxs->c_ieee = physt->chan; 245 rxs->c_freq = ieee80211_ieee2mhz(rxs->c_ieee, 246 IEEE80211_CHAN_2GHZ); 247 } 248 } 249