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 struct ieee80211_ratectl_tx_status txs; 81 struct r88e_tx_rpt_ccx *rpt; 82 struct ieee80211_node *ni; 83 uint8_t macid; 84 int ntries; 85 86 /* Skip Rx descriptor. */ 87 buf += sizeof(struct r92c_rx_stat); 88 len -= sizeof(struct r92c_rx_stat); 89 90 rpt = (struct r88e_tx_rpt_ccx *)buf; 91 if (len != sizeof(*rpt)) { 92 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 93 "%s: wrong report size (%d, must be %zu)\n", 94 __func__, len, sizeof(*rpt)); 95 return; 96 } 97 98 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 99 "%s: ccx report dump: 0: %02X, 1: %02X, 2: %02X, queue time: " 100 "low %02X, high %02X, final ridx: %02X, 6: %02X, 7: %02X\n", 101 __func__, rpt->rptb0, rpt->rptb1, rpt->rptb2, rpt->queue_time_low, 102 rpt->queue_time_high, rpt->final_rate, rpt->rptb6, rpt->rptb7); 103 104 macid = MS(rpt->rptb1, R88E_RPTB1_MACID); 105 if (macid > sc->macid_limit) { 106 device_printf(sc->sc_dev, 107 "macid %u is too big; increase MACID_MAX limit\n", 108 macid); 109 return; 110 } 111 112 ntries = MS(rpt->rptb2, R88E_RPTB2_RETRY_CNT); 113 114 ni = sc->node_list[macid]; 115 if (ni != NULL) { 116 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: frame for macid %u was" 117 "%s sent (%d retries)\n", __func__, macid, 118 (rpt->rptb1 & R88E_RPTB1_PKT_OK) ? "" : " not", 119 ntries); 120 121 txs.flags = IEEE80211_RATECTL_STATUS_LONG_RETRY | 122 IEEE80211_RATECTL_STATUS_FINAL_RATE; 123 txs.long_retries = ntries; 124 if (rpt->final_rate > RTWN_RIDX_OFDM54) { /* MCS */ 125 txs.final_rate = 126 rpt->final_rate - RTWN_RIDX_HT_MCS_SHIFT; 127 txs.final_rate |= IEEE80211_RATE_MCS; 128 } else 129 txs.final_rate = ridx2rate[rpt->final_rate]; 130 if (rpt->rptb1 & R88E_RPTB1_PKT_OK) 131 txs.status = IEEE80211_RATECTL_TX_SUCCESS; 132 else if (rpt->rptb2 & R88E_RPTB2_RETRY_OVER) 133 txs.status = IEEE80211_RATECTL_TX_FAIL_LONG; 134 else if (rpt->rptb2 & R88E_RPTB2_LIFE_EXPIRE) 135 txs.status = IEEE80211_RATECTL_TX_FAIL_EXPIRED; 136 else 137 txs.status = IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED; 138 ieee80211_ratectl_tx_complete(ni, &txs); 139 } else { 140 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: macid %u, ni is NULL\n", 141 __func__, macid); 142 } 143 } 144 145 void 146 r88e_handle_c2h_report(struct rtwn_softc *sc, uint8_t *buf, int len) 147 { 148 149 /* Skip Rx descriptor. */ 150 buf += sizeof(struct r92c_rx_stat); 151 len -= sizeof(struct r92c_rx_stat); 152 153 if (len != R88E_INTR_MSG_LEN) { 154 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 155 "%s: wrong interrupt message size (%d, must be %d)\n", 156 __func__, len, R88E_INTR_MSG_LEN); 157 return; 158 } 159 160 /* XXX TODO */ 161 } 162 163 int8_t 164 r88e_get_rssi_cck(struct rtwn_softc *sc, void *physt) 165 { 166 struct r88e_rx_phystat *phy = (struct r88e_rx_phystat *)physt; 167 int8_t lna_idx, vga_idx, rssi; 168 169 lna_idx = (phy->agc_rpt & 0xe0) >> 5; 170 vga_idx = (phy->agc_rpt & 0x1f); 171 rssi = 6 - 2 * vga_idx; 172 173 switch (lna_idx) { 174 case 7: 175 if (vga_idx > 27) 176 rssi = -100 + 6; 177 else 178 rssi += -100 + 2 * 27; 179 break; 180 case 6: 181 rssi += -48 + 2 * 2; 182 break; 183 case 5: 184 rssi += -42 + 2 * 7; 185 break; 186 case 4: 187 rssi += -36 + 2 * 7; 188 break; 189 case 3: 190 rssi += -24 + 2 * 7; 191 break; 192 case 2: 193 rssi += -6 + 2 * 5; 194 if (sc->sc_flags & RTWN_FLAG_CCK_HIPWR) 195 rssi -= 6; 196 break; 197 case 1: 198 rssi += 8; 199 break; 200 case 0: 201 rssi += 14; 202 break; 203 } 204 205 return (rssi); 206 } 207 208 int8_t 209 r88e_get_rssi_ofdm(struct rtwn_softc *sc, void *physt) 210 { 211 struct r88e_rx_phystat *phy = (struct r88e_rx_phystat *)physt; 212 int rssi; 213 214 /* Get average RSSI. */ 215 rssi = ((phy->sig_qual >> 1) & 0x7f) - 110; 216 217 return (rssi); 218 } 219 220 void 221 r88e_get_rx_stats(struct rtwn_softc *sc, struct ieee80211_rx_stats *rxs, 222 const void *desc, const void *physt_ptr) 223 { 224 const struct r88e_rx_phystat *physt = physt_ptr; 225 226 r92c_get_rx_stats(sc, rxs, desc, physt_ptr); 227 228 if (!sc->sc_ht40) { /* XXX center channel */ 229 rxs->r_flags |= IEEE80211_R_IEEE | IEEE80211_R_FREQ; 230 rxs->r_flags |= IEEE80211_R_BAND; 231 rxs->c_ieee = physt->chan; 232 rxs->c_freq = ieee80211_ieee2mhz(rxs->c_ieee, 233 IEEE80211_CHAN_2GHZ); 234 rxs->c_band = IEEE80211_CHAN_2GHZ; 235 } 236 } 237