1 /* $OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $ */ 2 3 /* 4 * Copyright (c) 2014 genua mbh <info@genua.de> 5 * Copyright (c) 2014 Fixup Software Ltd. 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /*- 21 * Based on BSD-licensed source modules in the Linux iwlwifi driver, 22 * which were used as the reference documentation for this implementation. 23 * 24 * Driver version we are currently based off of is 25 * Linux 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd) 26 * 27 *********************************************************************** 28 * 29 * This file is provided under a dual BSD/GPLv2 license. When using or 30 * redistributing this file, you may do so under either license. 31 * 32 * GPL LICENSE SUMMARY 33 * 34 * Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved. 35 * 36 * This program is free software; you can redistribute it and/or modify 37 * it under the terms of version 2 of the GNU General Public License as 38 * published by the Free Software Foundation. 39 * 40 * This program is distributed in the hope that it will be useful, but 41 * WITHOUT ANY WARRANTY; without even the implied warranty of 42 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 43 * General Public License for more details. 44 * 45 * You should have received a copy of the GNU General Public License 46 * along with this program; if not, write to the Free Software 47 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 48 * USA 49 * 50 * The full GNU General Public License is included in this distribution 51 * in the file called COPYING. 52 * 53 * Contact Information: 54 * Intel Linux Wireless <ilw@linux.intel.com> 55 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 56 * 57 * 58 * BSD LICENSE 59 * 60 * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved. 61 * All rights reserved. 62 * 63 * Redistribution and use in source and binary forms, with or without 64 * modification, are permitted provided that the following conditions 65 * are met: 66 * 67 * * Redistributions of source code must retain the above copyright 68 * notice, this list of conditions and the following disclaimer. 69 * * Redistributions in binary form must reproduce the above copyright 70 * notice, this list of conditions and the following disclaimer in 71 * the documentation and/or other materials provided with the 72 * distribution. 73 * * Neither the name Intel Corporation nor the names of its 74 * contributors may be used to endorse or promote products derived 75 * from this software without specific prior written permission. 76 * 77 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 78 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 79 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 80 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 81 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 82 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 83 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 84 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 85 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 86 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 87 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 88 */ 89 90 /*- 91 * Copyright (c) 2007-2010 Damien Bergamini <damien.bergamini@free.fr> 92 * 93 * Permission to use, copy, modify, and distribute this software for any 94 * purpose with or without fee is hereby granted, provided that the above 95 * copyright notice and this permission notice appear in all copies. 96 * 97 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 98 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 99 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 100 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 101 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 102 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 103 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 104 */ 105 #include <sys/cdefs.h> 106 #include "opt_wlan.h" 107 #include "opt_iwm.h" 108 109 #include <sys/param.h> 110 #include <sys/bus.h> 111 #include <sys/conf.h> 112 #include <sys/endian.h> 113 #include <sys/firmware.h> 114 #include <sys/kernel.h> 115 #include <sys/malloc.h> 116 #include <sys/mbuf.h> 117 #include <sys/mutex.h> 118 #include <sys/module.h> 119 #include <sys/proc.h> 120 #include <sys/rman.h> 121 #include <sys/socket.h> 122 #include <sys/sockio.h> 123 #include <sys/sysctl.h> 124 #include <sys/linker.h> 125 126 #include <machine/bus.h> 127 #include <machine/endian.h> 128 #include <machine/resource.h> 129 130 #include <dev/pci/pcivar.h> 131 #include <dev/pci/pcireg.h> 132 133 #include <net/bpf.h> 134 135 #include <net/if.h> 136 #include <net/if_var.h> 137 #include <net/if_arp.h> 138 #include <net/if_dl.h> 139 #include <net/if_media.h> 140 #include <net/if_types.h> 141 142 #include <netinet/in.h> 143 #include <netinet/in_systm.h> 144 #include <netinet/if_ether.h> 145 #include <netinet/ip.h> 146 147 #include <net80211/ieee80211_var.h> 148 #include <net80211/ieee80211_regdomain.h> 149 #include <net80211/ieee80211_ratectl.h> 150 #include <net80211/ieee80211_radiotap.h> 151 152 #include <dev/iwm/if_iwmreg.h> 153 #include <dev/iwm/if_iwmvar.h> 154 #include <dev/iwm/if_iwm_debug.h> 155 #include <dev/iwm/if_iwm_util.h> 156 #include <dev/iwm/if_iwm_phy_ctxt.h> 157 158 /* 159 * BEGIN iwlwifi/mvm/phy-ctxt.c 160 */ 161 162 /* 163 * Construct the generic fields of the PHY context command 164 */ 165 static void 166 iwm_phy_ctxt_cmd_hdr(struct iwm_softc *sc, struct iwm_phy_ctxt *ctxt, 167 struct iwm_phy_context_cmd *cmd, uint32_t action, uint32_t apply_time) 168 { 169 memset(cmd, 0, sizeof(struct iwm_phy_context_cmd)); 170 171 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD, 172 "%s: id=%d, colour=%d, action=%d, apply_time=%d\n", 173 __func__, 174 ctxt->id, 175 ctxt->color, 176 action, 177 apply_time); 178 179 cmd->id_and_color = htole32(IWM_FW_CMD_ID_AND_COLOR(ctxt->id, 180 ctxt->color)); 181 cmd->action = htole32(action); 182 cmd->apply_time = htole32(apply_time); 183 } 184 185 /* 186 * Add the phy configuration to the PHY context command 187 */ 188 static void 189 iwm_phy_ctxt_cmd_data(struct iwm_softc *sc, 190 struct iwm_phy_context_cmd *cmd, struct ieee80211_channel *chan, 191 uint8_t chains_static, uint8_t chains_dynamic) 192 { 193 struct ieee80211com *ic = &sc->sc_ic; 194 uint8_t active_cnt, idle_cnt; 195 196 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD, 197 "%s: 2ghz=%d, channel=%d, chains static=0x%x, dynamic=0x%x, " 198 "rx_ant=0x%x, tx_ant=0x%x\n", 199 __func__, 200 !! IEEE80211_IS_CHAN_2GHZ(chan), 201 ieee80211_chan2ieee(ic, chan), 202 chains_static, 203 chains_dynamic, 204 iwm_get_valid_rx_ant(sc), 205 iwm_get_valid_tx_ant(sc)); 206 207 208 cmd->ci.band = IEEE80211_IS_CHAN_2GHZ(chan) ? 209 IWM_PHY_BAND_24 : IWM_PHY_BAND_5; 210 211 cmd->ci.channel = ieee80211_chan2ieee(ic, chan); 212 cmd->ci.width = IWM_PHY_VHT_CHANNEL_MODE20; 213 cmd->ci.ctrl_pos = IWM_PHY_VHT_CTRL_POS_1_BELOW; 214 215 /* Set rx the chains */ 216 idle_cnt = chains_static; 217 active_cnt = chains_dynamic; 218 219 /* In scenarios where we only ever use a single-stream rates, 220 * i.e. legacy 11b/g/a associations, single-stream APs or even 221 * static SMPS, enable both chains to get diversity, improving 222 * the case where we're far enough from the AP that attenuation 223 * between the two antennas is sufficiently different to impact 224 * performance. 225 */ 226 if (active_cnt == 1 && iwm_rx_diversity_allowed(sc)) { 227 idle_cnt = 2; 228 active_cnt = 2; 229 } 230 231 cmd->rxchain_info = htole32(iwm_get_valid_rx_ant(sc) << 232 IWM_PHY_RX_CHAIN_VALID_POS); 233 cmd->rxchain_info |= htole32(idle_cnt << IWM_PHY_RX_CHAIN_CNT_POS); 234 cmd->rxchain_info |= htole32(active_cnt << 235 IWM_PHY_RX_CHAIN_MIMO_CNT_POS); 236 237 cmd->txchain_info = htole32(iwm_get_valid_tx_ant(sc)); 238 } 239 240 /* 241 * Send a command 242 * only if something in the configuration changed: in case that this is the 243 * first time that the phy configuration is applied or in case that the phy 244 * configuration changed from the previous apply. 245 */ 246 static int 247 iwm_phy_ctxt_apply(struct iwm_softc *sc, 248 struct iwm_phy_ctxt *ctxt, 249 uint8_t chains_static, uint8_t chains_dynamic, 250 uint32_t action, uint32_t apply_time) 251 { 252 struct iwm_phy_context_cmd cmd; 253 int ret; 254 255 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD, 256 "%s: called; channel=%p\n", 257 __func__, 258 ctxt->channel); 259 260 /* Set the command header fields */ 261 iwm_phy_ctxt_cmd_hdr(sc, ctxt, &cmd, action, apply_time); 262 263 /* Set the command data */ 264 iwm_phy_ctxt_cmd_data(sc, &cmd, ctxt->channel, 265 chains_static, chains_dynamic); 266 267 ret = iwm_send_cmd_pdu(sc, IWM_PHY_CONTEXT_CMD, IWM_CMD_SYNC, 268 sizeof(struct iwm_phy_context_cmd), &cmd); 269 if (ret) { 270 device_printf(sc->sc_dev, 271 "PHY ctxt cmd error. ret=%d\n", ret); 272 } 273 return ret; 274 } 275 276 /* 277 * Send a command to add a PHY context based on the current HW configuration. 278 */ 279 int 280 iwm_phy_ctxt_add(struct iwm_softc *sc, struct iwm_phy_ctxt *ctxt, 281 struct ieee80211_channel *chan, 282 uint8_t chains_static, uint8_t chains_dynamic) 283 { 284 ctxt->channel = chan; 285 286 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD, 287 "%s: called; channel=%d\n", 288 __func__, 289 ieee80211_chan2ieee(&sc->sc_ic, chan)); 290 291 return iwm_phy_ctxt_apply(sc, ctxt, 292 chains_static, chains_dynamic, IWM_FW_CTXT_ACTION_ADD, 0); 293 } 294 295 /* 296 * Send a command to modify the PHY context based on the current HW 297 * configuration. Note that the function does not check that the configuration 298 * changed. 299 */ 300 int 301 iwm_phy_ctxt_changed(struct iwm_softc *sc, 302 struct iwm_phy_ctxt *ctxt, struct ieee80211_channel *chan, 303 uint8_t chains_static, uint8_t chains_dynamic) 304 { 305 ctxt->channel = chan; 306 307 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD, 308 "%s: called; channel=%d\n", 309 __func__, 310 ieee80211_chan2ieee(&sc->sc_ic, chan)); 311 312 return iwm_phy_ctxt_apply(sc, ctxt, 313 chains_static, chains_dynamic, IWM_FW_CTXT_ACTION_MODIFY, 0); 314 } 315 316 /* 317 * END iwlwifi/mvm/phy-ctxt.c 318 */ 319