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/rtl8188e/r88e.h> 55 #include <dev/rtwn/rtl8188e/r88e_rx_desc.h> 56 57 58 void 59 r88e_ratectl_tx_complete(struct rtwn_softc *sc, uint8_t *buf, int len) 60 { 61 #if __FreeBSD_version >= 1200012 62 struct ieee80211_ratectl_tx_status txs; 63 #endif 64 struct r88e_tx_rpt_ccx *rpt; 65 struct ieee80211_node *ni; 66 uint8_t macid; 67 int ntries; 68 69 /* Skip Rx descriptor. */ 70 buf += sizeof(struct r92c_rx_stat); 71 len -= sizeof(struct r92c_rx_stat); 72 73 rpt = (struct r88e_tx_rpt_ccx *)buf; 74 if (len != sizeof(*rpt)) { 75 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 76 "%s: wrong report size (%d, must be %zu)\n", 77 __func__, len, sizeof(*rpt)); 78 return; 79 } 80 81 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 82 "%s: ccx report dump: 0: %02X, 1: %02X, 2: %02X, queue time: " 83 "low %02X, high %02X, final ridx: %02X, 6: %02X, 7: %02X\n", 84 __func__, rpt->rptb0, rpt->rptb1, rpt->rptb2, rpt->queue_time_low, 85 rpt->queue_time_high, rpt->final_rate, rpt->rptb6, rpt->rptb7); 86 87 macid = MS(rpt->rptb1, R88E_RPTB1_MACID); 88 if (macid > sc->macid_limit) { 89 device_printf(sc->sc_dev, 90 "macid %u is too big; increase MACID_MAX limit\n", 91 macid); 92 return; 93 } 94 95 ntries = MS(rpt->rptb2, R88E_RPTB2_RETRY_CNT); 96 97 ni = sc->node_list[macid]; 98 if (ni != NULL) { 99 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: frame for macid %u was" 100 "%s sent (%d retries)\n", __func__, macid, 101 (rpt->rptb1 & R88E_RPTB1_PKT_OK) ? "" : " not", 102 ntries); 103 104 #if __FreeBSD_version >= 1200012 105 txs.flags = IEEE80211_RATECTL_STATUS_LONG_RETRY | 106 IEEE80211_RATECTL_STATUS_FINAL_RATE; 107 txs.long_retries = ntries; 108 if (rpt->final_rate > RTWN_RIDX_OFDM54) { /* MCS */ 109 txs.final_rate = 110 (rpt->final_rate - 12) | IEEE80211_RATE_MCS; 111 } else 112 txs.final_rate = ridx2rate[rpt->final_rate]; 113 if (rpt->rptb1 & R88E_RPTB1_PKT_OK) 114 txs.status = IEEE80211_RATECTL_TX_SUCCESS; 115 else if (rpt->rptb2 & R88E_RPTB2_RETRY_OVER) 116 txs.status = IEEE80211_RATECTL_TX_FAIL_LONG; 117 else if (rpt->rptb2 & R88E_RPTB2_LIFE_EXPIRE) 118 txs.status = IEEE80211_RATECTL_TX_FAIL_EXPIRED; 119 else 120 txs.status = IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED; 121 ieee80211_ratectl_tx_complete(ni, &txs); 122 #else 123 struct ieee80211vap *vap = ni->ni_vap; 124 if (rpt->rptb1 & R88E_RPTB1_PKT_OK) { 125 ieee80211_ratectl_tx_complete(vap, ni, 126 IEEE80211_RATECTL_TX_SUCCESS, &ntries, NULL); 127 } else { 128 ieee80211_ratectl_tx_complete(vap, ni, 129 IEEE80211_RATECTL_TX_FAILURE, &ntries, NULL); 130 } 131 #endif 132 } else { 133 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: macid %u, ni is NULL\n", 134 __func__, macid); 135 } 136 } 137 138 void 139 r88e_handle_c2h_report(struct rtwn_softc *sc, uint8_t *buf, int len) 140 { 141 142 /* Skip Rx descriptor. */ 143 buf += sizeof(struct r92c_rx_stat); 144 len -= sizeof(struct r92c_rx_stat); 145 146 if (len != R88E_INTR_MSG_LEN) { 147 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, 148 "%s: wrong interrupt message size (%d, must be %d)\n", 149 __func__, len, R88E_INTR_MSG_LEN); 150 return; 151 } 152 153 /* XXX TODO */ 154 } 155 156 int8_t 157 r88e_get_rssi_cck(struct rtwn_softc *sc, void *physt) 158 { 159 struct r88e_rx_phystat *phy = (struct r88e_rx_phystat *)physt; 160 int8_t lna_idx, vga_idx, rssi; 161 162 lna_idx = (phy->agc_rpt & 0xe0) >> 5; 163 vga_idx = (phy->agc_rpt & 0x1f); 164 rssi = 6 - 2 * vga_idx; 165 166 switch (lna_idx) { 167 case 7: 168 if (vga_idx > 27) 169 rssi = -100 + 6; 170 else 171 rssi += -100 + 2 * 27; 172 break; 173 case 6: 174 rssi += -48 + 2 * 2; 175 break; 176 case 5: 177 rssi += -42 + 2 * 7; 178 break; 179 case 4: 180 rssi += -36 + 2 * 7; 181 break; 182 case 3: 183 rssi += -24 + 2 * 7; 184 break; 185 case 2: 186 rssi += -6 + 2 * 5; 187 if (sc->sc_flags & RTWN_FLAG_CCK_HIPWR) 188 rssi -= 6; 189 break; 190 case 1: 191 rssi += 8; 192 break; 193 case 0: 194 rssi += 14; 195 break; 196 } 197 198 return (rssi); 199 } 200 201 int8_t 202 r88e_get_rssi_ofdm(struct rtwn_softc *sc, void *physt) 203 { 204 struct r88e_rx_phystat *phy = (struct r88e_rx_phystat *)physt; 205 int rssi; 206 207 /* Get average RSSI. */ 208 rssi = ((phy->sig_qual >> 1) & 0x7f) - 110; 209 210 return (rssi); 211 } 212