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 __FBSDID("$FreeBSD$"); 107 108 #include "opt_wlan.h" 109 #include "opt_iwm.h" 110 111 #include <sys/param.h> 112 #include <sys/bus.h> 113 #include <sys/conf.h> 114 #include <sys/endian.h> 115 #include <sys/firmware.h> 116 #include <sys/kernel.h> 117 #include <sys/malloc.h> 118 #include <sys/mbuf.h> 119 #include <sys/mutex.h> 120 #include <sys/module.h> 121 #include <sys/proc.h> 122 #include <sys/rman.h> 123 #include <sys/socket.h> 124 #include <sys/sockio.h> 125 #include <sys/sysctl.h> 126 #include <sys/linker.h> 127 128 #include <machine/bus.h> 129 #include <machine/endian.h> 130 #include <machine/resource.h> 131 132 #include <dev/pci/pcivar.h> 133 #include <dev/pci/pcireg.h> 134 135 #include <net/bpf.h> 136 137 #include <net/if.h> 138 #include <net/if_var.h> 139 #include <net/if_arp.h> 140 #include <net/if_dl.h> 141 #include <net/if_media.h> 142 #include <net/if_types.h> 143 144 #include <netinet/in.h> 145 #include <netinet/in_systm.h> 146 #include <netinet/if_ether.h> 147 #include <netinet/ip.h> 148 149 #include <net80211/ieee80211_var.h> 150 #include <net80211/ieee80211_regdomain.h> 151 #include <net80211/ieee80211_ratectl.h> 152 #include <net80211/ieee80211_radiotap.h> 153 154 #include <dev/iwm/if_iwmreg.h> 155 #include <dev/iwm/if_iwmvar.h> 156 #include <dev/iwm/if_iwm_debug.h> 157 #include <dev/iwm/if_iwm_util.h> 158 #include <dev/iwm/if_iwm_phy_ctxt.h> 159 160 /* 161 * BEGIN iwlwifi/mvm/phy-ctxt.c 162 */ 163 164 /* 165 * Construct the generic fields of the PHY context command 166 */ 167 static void 168 iwm_mvm_phy_ctxt_cmd_hdr(struct iwm_softc *sc, struct iwm_mvm_phy_ctxt *ctxt, 169 struct iwm_phy_context_cmd *cmd, uint32_t action, uint32_t apply_time) 170 { 171 memset(cmd, 0, sizeof(struct iwm_phy_context_cmd)); 172 173 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD, 174 "%s: id=%d, colour=%d, action=%d, apply_time=%d\n", 175 __func__, 176 ctxt->id, 177 ctxt->color, 178 action, 179 apply_time); 180 181 cmd->id_and_color = htole32(IWM_FW_CMD_ID_AND_COLOR(ctxt->id, 182 ctxt->color)); 183 cmd->action = htole32(action); 184 cmd->apply_time = htole32(apply_time); 185 } 186 187 /* 188 * Add the phy configuration to the PHY context command 189 */ 190 static void 191 iwm_mvm_phy_ctxt_cmd_data(struct iwm_softc *sc, 192 struct iwm_phy_context_cmd *cmd, struct ieee80211_channel *chan, 193 uint8_t chains_static, uint8_t chains_dynamic) 194 { 195 struct ieee80211com *ic = &sc->sc_ic; 196 uint8_t active_cnt, idle_cnt; 197 198 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD, 199 "%s: 2ghz=%d, channel=%d, chains static=0x%x, dynamic=0x%x, " 200 "rx_ant=0x%x, tx_ant=0x%x\n", 201 __func__, 202 !! IEEE80211_IS_CHAN_2GHZ(chan), 203 ieee80211_chan2ieee(ic, chan), 204 chains_static, 205 chains_dynamic, 206 iwm_mvm_get_valid_rx_ant(sc), 207 iwm_mvm_get_valid_tx_ant(sc)); 208 209 210 cmd->ci.band = IEEE80211_IS_CHAN_2GHZ(chan) ? 211 IWM_PHY_BAND_24 : IWM_PHY_BAND_5; 212 213 cmd->ci.channel = ieee80211_chan2ieee(ic, chan); 214 cmd->ci.width = IWM_PHY_VHT_CHANNEL_MODE20; 215 cmd->ci.ctrl_pos = IWM_PHY_VHT_CTRL_POS_1_BELOW; 216 217 /* Set rx the chains */ 218 idle_cnt = chains_static; 219 active_cnt = chains_dynamic; 220 221 /* In scenarios where we only ever use a single-stream rates, 222 * i.e. legacy 11b/g/a associations, single-stream APs or even 223 * static SMPS, enable both chains to get diversity, improving 224 * the case where we're far enough from the AP that attenuation 225 * between the two antennas is sufficiently different to impact 226 * performance. 227 */ 228 if (active_cnt == 1 && iwm_mvm_rx_diversity_allowed(sc)) { 229 idle_cnt = 2; 230 active_cnt = 2; 231 } 232 233 cmd->rxchain_info = htole32(iwm_mvm_get_valid_rx_ant(sc) << 234 IWM_PHY_RX_CHAIN_VALID_POS); 235 cmd->rxchain_info |= htole32(idle_cnt << IWM_PHY_RX_CHAIN_CNT_POS); 236 cmd->rxchain_info |= htole32(active_cnt << 237 IWM_PHY_RX_CHAIN_MIMO_CNT_POS); 238 239 cmd->txchain_info = htole32(iwm_mvm_get_valid_tx_ant(sc)); 240 } 241 242 /* 243 * Send a command 244 * only if something in the configuration changed: in case that this is the 245 * first time that the phy configuration is applied or in case that the phy 246 * configuration changed from the previous apply. 247 */ 248 static int 249 iwm_mvm_phy_ctxt_apply(struct iwm_softc *sc, 250 struct iwm_mvm_phy_ctxt *ctxt, 251 uint8_t chains_static, uint8_t chains_dynamic, 252 uint32_t action, uint32_t apply_time) 253 { 254 struct iwm_phy_context_cmd cmd; 255 int ret; 256 257 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD, 258 "%s: called; channel=%p\n", 259 __func__, 260 ctxt->channel); 261 262 /* Set the command header fields */ 263 iwm_mvm_phy_ctxt_cmd_hdr(sc, ctxt, &cmd, action, apply_time); 264 265 /* Set the command data */ 266 iwm_mvm_phy_ctxt_cmd_data(sc, &cmd, ctxt->channel, 267 chains_static, chains_dynamic); 268 269 ret = iwm_mvm_send_cmd_pdu(sc, IWM_PHY_CONTEXT_CMD, IWM_CMD_SYNC, 270 sizeof(struct iwm_phy_context_cmd), &cmd); 271 if (ret) { 272 device_printf(sc->sc_dev, 273 "PHY ctxt cmd error. ret=%d\n", ret); 274 } 275 return ret; 276 } 277 278 /* 279 * Send a command to add a PHY context based on the current HW configuration. 280 */ 281 int 282 iwm_mvm_phy_ctxt_add(struct iwm_softc *sc, struct iwm_mvm_phy_ctxt *ctxt, 283 struct ieee80211_channel *chan, 284 uint8_t chains_static, uint8_t chains_dynamic) 285 { 286 ctxt->channel = chan; 287 288 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD, 289 "%s: called; channel=%d\n", 290 __func__, 291 ieee80211_chan2ieee(&sc->sc_ic, chan)); 292 293 return iwm_mvm_phy_ctxt_apply(sc, ctxt, 294 chains_static, chains_dynamic, IWM_FW_CTXT_ACTION_ADD, 0); 295 } 296 297 /* 298 * Send a command to modify the PHY context based on the current HW 299 * configuration. Note that the function does not check that the configuration 300 * changed. 301 */ 302 int 303 iwm_mvm_phy_ctxt_changed(struct iwm_softc *sc, 304 struct iwm_mvm_phy_ctxt *ctxt, struct ieee80211_channel *chan, 305 uint8_t chains_static, uint8_t chains_dynamic) 306 { 307 ctxt->channel = chan; 308 309 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD, 310 "%s: called; channel=%d\n", 311 __func__, 312 ieee80211_chan2ieee(&sc->sc_ic, chan)); 313 314 return iwm_mvm_phy_ctxt_apply(sc, ctxt, 315 chains_static, chains_dynamic, IWM_FW_CTXT_ACTION_MODIFY, 0); 316 } 317 318 /* 319 * END iwlwifi/mvm/phy-ctxt.c 320 */ 321