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 #include "opt_wlan.h" 23 24 #include <sys/param.h> 25 #include <sys/lock.h> 26 #include <sys/mutex.h> 27 #include <sys/mbuf.h> 28 #include <sys/kernel.h> 29 #include <sys/socket.h> 30 #include <sys/systm.h> 31 #include <sys/malloc.h> 32 #include <sys/queue.h> 33 #include <sys/taskqueue.h> 34 #include <sys/bus.h> 35 #include <sys/endian.h> 36 #include <sys/linker.h> 37 38 #include <net/if.h> 39 #include <net/ethernet.h> 40 #include <net/if_media.h> 41 42 #include <net80211/ieee80211_var.h> 43 #include <net80211/ieee80211_radiotap.h> 44 #include <net80211/ieee80211_ratectl.h> 45 46 #include <dev/rtwn/if_rtwnreg.h> 47 #include <dev/rtwn/if_rtwnvar.h> 48 49 #include <dev/rtwn/if_rtwn_debug.h> 50 #include <dev/rtwn/if_rtwn_ridx.h> 51 52 #include <dev/rtwn/rtl8192c/r92c.h> 53 #include <dev/rtwn/rtl8188e/r88e.h> 54 #include <dev/rtwn/rtl8188e/r88e_rx_desc.h> 55 56 int 57 r88e_classify_intr(struct rtwn_softc *sc, void *buf, int len) 58 { 59 struct r92c_rx_stat *stat = buf; 60 int report_sel = MS(le32toh(stat->rxdw3), R88E_RXDW3_RPT); 61 62 switch (report_sel) { 63 case R88E_RXDW3_RPT_RX: 64 return (RTWN_RX_DATA); 65 case R88E_RXDW3_RPT_TX1: /* per-packet Tx report */ 66 case R88E_RXDW3_RPT_TX2: /* periodical Tx report */ 67 return (RTWN_RX_TX_REPORT); 68 case R88E_RXDW3_RPT_HIS: 69 return (RTWN_RX_OTHER); 70 default: /* shut up the compiler */ 71 return (RTWN_RX_DATA); 72 } 73 } 74 75 void 76 r88e_ratectl_tx_complete(struct rtwn_softc *sc, uint8_t *buf, int len) 77 { 78 struct ieee80211_ratectl_tx_status txs; 79 struct r88e_tx_rpt_ccx *rpt; 80 struct ieee80211_node *ni; 81 uint8_t macid; 82 int ntries; 83 84 /* Skip Rx descriptor. */ 85 buf += sizeof(struct r92c_rx_stat); 86 len -= sizeof(struct r92c_rx_stat); 87 88 rpt = (struct r88e_tx_rpt_ccx *)buf; 89 if (len != sizeof(*rpt)) { 90 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 91 "%s: wrong report size (%d, must be %zu)\n", 92 __func__, len, sizeof(*rpt)); 93 return; 94 } 95 96 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 97 "%s: ccx report dump: 0: %02X, 1: %02X, 2: %02X, queue time: " 98 "low %02X, high %02X, final ridx: %02X, 6: %02X, 7: %02X\n", 99 __func__, rpt->rptb0, rpt->rptb1, rpt->rptb2, rpt->queue_time_low, 100 rpt->queue_time_high, rpt->final_rate, rpt->rptb6, rpt->rptb7); 101 102 macid = MS(rpt->rptb1, R88E_RPTB1_MACID); 103 if (macid > sc->macid_limit) { 104 device_printf(sc->sc_dev, 105 "macid %u is too big; increase MACID_MAX limit\n", 106 macid); 107 return; 108 } 109 110 ntries = MS(rpt->rptb2, R88E_RPTB2_RETRY_CNT); 111 112 ni = sc->node_list[macid]; 113 if (ni != NULL) { 114 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: frame for macid %u was" 115 "%s sent (%d retries)\n", __func__, macid, 116 (rpt->rptb1 & R88E_RPTB1_PKT_OK) ? "" : " not", 117 ntries); 118 119 txs.flags = IEEE80211_RATECTL_STATUS_LONG_RETRY | 120 IEEE80211_RATECTL_STATUS_FINAL_RATE; 121 txs.long_retries = ntries; 122 if (rpt->final_rate > RTWN_RIDX_OFDM54) { /* MCS */ 123 txs.final_rate = 124 rpt->final_rate - RTWN_RIDX_HT_MCS_SHIFT; 125 txs.final_rate |= IEEE80211_RATE_MCS; 126 } else 127 txs.final_rate = ridx2rate[rpt->final_rate]; 128 if (rpt->rptb1 & R88E_RPTB1_PKT_OK) 129 txs.status = IEEE80211_RATECTL_TX_SUCCESS; 130 else if (rpt->rptb2 & R88E_RPTB2_RETRY_OVER) 131 txs.status = IEEE80211_RATECTL_TX_FAIL_LONG; 132 else if (rpt->rptb2 & R88E_RPTB2_LIFE_EXPIRE) 133 txs.status = IEEE80211_RATECTL_TX_FAIL_EXPIRED; 134 else 135 txs.status = IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED; 136 ieee80211_ratectl_tx_complete(ni, &txs); 137 } else { 138 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: macid %u, ni is NULL\n", 139 __func__, macid); 140 } 141 } 142 143 void 144 r88e_handle_c2h_report(struct rtwn_softc *sc, uint8_t *buf, int len) 145 { 146 147 /* Skip Rx descriptor. */ 148 buf += sizeof(struct r92c_rx_stat); 149 len -= sizeof(struct r92c_rx_stat); 150 151 if (len != R88E_INTR_MSG_LEN) { 152 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 153 "%s: wrong interrupt message size (%d, must be %d)\n", 154 __func__, len, R88E_INTR_MSG_LEN); 155 return; 156 } 157 158 /* XXX TODO */ 159 } 160 161 int8_t 162 r88e_get_rssi_cck(struct rtwn_softc *sc, void *physt) 163 { 164 struct r88e_rx_phystat *phy = (struct r88e_rx_phystat *)physt; 165 int8_t lna_idx, vga_idx, rssi; 166 167 lna_idx = (phy->agc_rpt & 0xe0) >> 5; 168 vga_idx = (phy->agc_rpt & 0x1f); 169 rssi = 6 - 2 * vga_idx; 170 171 switch (lna_idx) { 172 case 7: 173 if (vga_idx > 27) 174 rssi = -100 + 6; 175 else 176 rssi += -100 + 2 * 27; 177 break; 178 case 6: 179 rssi += -48 + 2 * 2; 180 break; 181 case 5: 182 rssi += -42 + 2 * 7; 183 break; 184 case 4: 185 rssi += -36 + 2 * 7; 186 break; 187 case 3: 188 rssi += -24 + 2 * 7; 189 break; 190 case 2: 191 rssi += -6 + 2 * 5; 192 if (sc->sc_flags & RTWN_FLAG_CCK_HIPWR) 193 rssi -= 6; 194 break; 195 case 1: 196 rssi += 8; 197 break; 198 case 0: 199 rssi += 14; 200 break; 201 } 202 203 return (rssi); 204 } 205 206 int8_t 207 r88e_get_rssi_ofdm(struct rtwn_softc *sc, void *physt) 208 { 209 struct r88e_rx_phystat *phy = (struct r88e_rx_phystat *)physt; 210 int rssi; 211 212 /* Get average RSSI. */ 213 rssi = ((phy->sig_qual >> 1) & 0x7f) - 110; 214 215 return (rssi); 216 } 217 218 void 219 r88e_get_rx_stats(struct rtwn_softc *sc, struct ieee80211_rx_stats *rxs, 220 const void *desc, const void *physt_ptr) 221 { 222 const struct r88e_rx_phystat *physt = physt_ptr; 223 224 r92c_get_rx_stats(sc, rxs, desc, physt_ptr); 225 226 if (!sc->sc_ht40) { /* XXX center channel */ 227 rxs->r_flags |= IEEE80211_R_IEEE | IEEE80211_R_FREQ; 228 rxs->r_flags |= IEEE80211_R_BAND; 229 rxs->c_ieee = physt->chan; 230 rxs->c_freq = ieee80211_ieee2mhz(rxs->c_ieee, 231 IEEE80211_CHAN_2GHZ); 232 rxs->c_band = IEEE80211_CHAN_2GHZ; 233 } 234 } 235