488 lines
14 KiB
C
488 lines
14 KiB
C
/* $OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $ */
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/*
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* Copyright (c) 2014 genua mbh <info@genua.de>
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* Copyright (c) 2014 Fixup Software Ltd.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*-
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* Based on BSD-licensed source modules in the Linux iwlwifi driver,
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* which were used as the reference documentation for this implementation.
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*
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* Driver version we are currently based off of is
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* Linux 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd)
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*
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***********************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called COPYING.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*
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* BSD LICENSE
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*
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* Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include "opt_wlan.h"
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#include "opt_iwm.h"
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/endian.h>
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#include <sys/firmware.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/mutex.h>
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#include <sys/module.h>
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#include <sys/proc.h>
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#include <sys/rman.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/linker.h>
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#include <machine/bus.h>
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#include <machine/endian.h>
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#include <machine/resource.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_arp.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_types.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/if_ether.h>
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#include <netinet/ip.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_regdomain.h>
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#include <net80211/ieee80211_ratectl.h>
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#include <net80211/ieee80211_radiotap.h>
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#include <dev/iwm/if_iwmreg.h>
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#include <dev/iwm/if_iwmvar.h>
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#include <dev/iwm/if_iwm_debug.h>
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#include <dev/iwm/if_iwm_constants.h>
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#include <dev/iwm/if_iwm_util.h>
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#include <dev/iwm/if_iwm_power.h>
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static int iwm_power_scheme = IWM_POWER_SCHEME_BPS;
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TUNABLE_INT("hw.iwm.power_scheme", &iwm_power_scheme);
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/*
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* BEGIN mvm/power.c
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*/
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#define IWM_POWER_KEEP_ALIVE_PERIOD_SEC 25
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static int
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iwm_beacon_filter_send_cmd(struct iwm_softc *sc,
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struct iwm_beacon_filter_cmd *cmd)
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{
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int ret;
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ret = iwm_send_cmd_pdu(sc, IWM_REPLY_BEACON_FILTERING_CMD,
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0, sizeof(struct iwm_beacon_filter_cmd), cmd);
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if (!ret) {
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"ba_enable_beacon_abort is: %d\n",
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le32toh(cmd->ba_enable_beacon_abort));
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"ba_escape_timer is: %d\n",
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le32toh(cmd->ba_escape_timer));
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"bf_debug_flag is: %d\n",
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le32toh(cmd->bf_debug_flag));
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"bf_enable_beacon_filter is: %d\n",
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le32toh(cmd->bf_enable_beacon_filter));
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"bf_energy_delta is: %d\n",
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le32toh(cmd->bf_energy_delta));
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"bf_escape_timer is: %d\n",
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le32toh(cmd->bf_escape_timer));
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"bf_roaming_energy_delta is: %d\n",
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le32toh(cmd->bf_roaming_energy_delta));
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"bf_roaming_state is: %d\n",
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le32toh(cmd->bf_roaming_state));
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"bf_temp_threshold is: %d\n",
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le32toh(cmd->bf_temp_threshold));
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"bf_temp_fast_filter is: %d\n",
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le32toh(cmd->bf_temp_fast_filter));
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"bf_temp_slow_filter is: %d\n",
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le32toh(cmd->bf_temp_slow_filter));
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}
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return ret;
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}
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static void
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iwm_beacon_filter_set_cqm_params(struct iwm_softc *sc,
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struct iwm_vap *ivp, struct iwm_beacon_filter_cmd *cmd)
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{
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cmd->ba_enable_beacon_abort = htole32(sc->sc_bf.ba_enabled);
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}
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static void
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iwm_power_log(struct iwm_softc *sc, struct iwm_mac_power_cmd *cmd)
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{
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"Sending power table command on mac id 0x%X for "
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"power level %d, flags = 0x%X\n",
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cmd->id_and_color, iwm_power_scheme, le16toh(cmd->flags));
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"Keep alive = %u sec\n", le16toh(cmd->keep_alive_seconds));
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if (!(cmd->flags & htole16(IWM_POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) {
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"Disable power management\n");
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return;
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}
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"Rx timeout = %u usec\n", le32toh(cmd->rx_data_timeout));
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"Tx timeout = %u usec\n", le32toh(cmd->tx_data_timeout));
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if (cmd->flags & htole16(IWM_POWER_FLAGS_SKIP_OVER_DTIM_MSK))
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IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
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"DTIM periods to skip = %u\n", cmd->skip_dtim_periods);
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}
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static boolean_t
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iwm_power_is_radar(struct iwm_softc *sc)
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{
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struct ieee80211com *ic = &sc->sc_ic;
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struct ieee80211_channel *chan;
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boolean_t radar_detect = FALSE;
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chan = ic->ic_bsschan;
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if (chan == IEEE80211_CHAN_ANYC ||
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(chan->ic_flags & IEEE80211_CHAN_DFS) != 0) {
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radar_detect = TRUE;
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}
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return radar_detect;
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}
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static void
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iwm_power_config_skip_dtim(struct iwm_softc *sc,
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struct iwm_mac_power_cmd *cmd)
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{
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struct ieee80211com *ic = &sc->sc_ic;
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struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
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int dtimper = vap->iv_dtim_period ?: 1;
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int skip;
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/* disable, in case we're supposed to override */
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cmd->skip_dtim_periods = 0;
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cmd->flags &= ~htole16(IWM_POWER_FLAGS_SKIP_OVER_DTIM_MSK);
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if (iwm_power_is_radar(sc))
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return;
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if (dtimper >= 10)
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return;
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/* TODO: check that multicast wake lock is off */
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if (iwm_power_scheme != IWM_POWER_SCHEME_LP)
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return;
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skip = 2;
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/* the firmware really expects "look at every X DTIMs", so add 1 */
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cmd->skip_dtim_periods = 1 + skip;
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cmd->flags |= htole16(IWM_POWER_FLAGS_SKIP_OVER_DTIM_MSK);
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}
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static void
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iwm_power_build_cmd(struct iwm_softc *sc, struct iwm_vap *ivp,
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struct iwm_mac_power_cmd *cmd)
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{
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struct ieee80211vap *vap = &ivp->iv_vap;
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struct ieee80211_node *ni = vap->iv_bss;
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int dtimper, dtimper_msec;
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int keep_alive;
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boolean_t bss_conf_ps = FALSE;
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cmd->id_and_color = htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id,
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ivp->color));
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dtimper = vap->iv_dtim_period ?: 1;
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/*
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* Regardless of power management state the driver must set
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* keep alive period. FW will use it for sending keep alive NDPs
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* immediately after association. Check that keep alive period
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* is at least 3 * DTIM
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*/
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dtimper_msec = dtimper * ni->ni_intval;
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keep_alive
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= imax(3 * dtimper_msec, 1000 * IWM_POWER_KEEP_ALIVE_PERIOD_SEC);
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keep_alive = roundup(keep_alive, 1000) / 1000;
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cmd->keep_alive_seconds = htole16(keep_alive);
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if (sc->sc_ps_disabled)
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return;
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cmd->flags |= htole16(IWM_POWER_FLAGS_POWER_SAVE_ENA_MSK);
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if (IWM_NODE(ni)->in_assoc &&
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(vap->iv_flags & IEEE80211_F_PMGTON) != 0) {
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bss_conf_ps = TRUE;
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}
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if (!bss_conf_ps)
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return;
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cmd->flags |= htole16(IWM_POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK);
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iwm_power_config_skip_dtim(sc, cmd);
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cmd->rx_data_timeout =
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htole32(IWM_DEFAULT_PS_RX_DATA_TIMEOUT);
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cmd->tx_data_timeout =
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htole32(IWM_DEFAULT_PS_TX_DATA_TIMEOUT);
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}
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static int
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iwm_power_send_cmd(struct iwm_softc *sc, struct iwm_vap *ivp)
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{
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struct iwm_mac_power_cmd cmd = {};
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iwm_power_build_cmd(sc, ivp, &cmd);
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iwm_power_log(sc, &cmd);
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return iwm_send_cmd_pdu(sc, IWM_MAC_PM_POWER_TABLE, 0,
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sizeof(cmd), &cmd);
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}
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static int
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_iwm_enable_beacon_filter(struct iwm_softc *sc, struct iwm_vap *ivp,
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struct iwm_beacon_filter_cmd *cmd)
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{
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int ret;
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iwm_beacon_filter_set_cqm_params(sc, ivp, cmd);
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ret = iwm_beacon_filter_send_cmd(sc, cmd);
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if (!ret)
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sc->sc_bf.bf_enabled = 1;
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return ret;
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}
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int
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iwm_enable_beacon_filter(struct iwm_softc *sc, struct iwm_vap *ivp)
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{
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struct iwm_beacon_filter_cmd cmd = {
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IWM_BF_CMD_CONFIG_DEFAULTS,
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.bf_enable_beacon_filter = htole32(1),
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};
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return _iwm_enable_beacon_filter(sc, ivp, &cmd);
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}
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int
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iwm_disable_beacon_filter(struct iwm_softc *sc)
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{
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struct iwm_beacon_filter_cmd cmd = {};
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int ret;
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ret = iwm_beacon_filter_send_cmd(sc, &cmd);
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if (ret == 0)
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sc->sc_bf.bf_enabled = 0;
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return ret;
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}
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static int
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iwm_power_set_ps(struct iwm_softc *sc)
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{
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struct ieee80211vap *vap;
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boolean_t disable_ps;
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int ret;
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/* disable PS if CAM */
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disable_ps = (iwm_power_scheme == IWM_POWER_SCHEME_CAM);
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/* ...or if any of the vifs require PS to be off */
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TAILQ_FOREACH(vap, &sc->sc_ic.ic_vaps, iv_next) {
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struct iwm_vap *ivp = IWM_VAP(vap);
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if (ivp->phy_ctxt != NULL && ivp->ps_disabled)
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disable_ps = TRUE;
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}
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/* update device power state if it has changed */
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if (sc->sc_ps_disabled != disable_ps) {
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boolean_t old_ps_disabled = sc->sc_ps_disabled;
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sc->sc_ps_disabled = disable_ps;
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ret = iwm_power_update_device(sc);
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if (ret) {
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sc->sc_ps_disabled = old_ps_disabled;
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return ret;
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}
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}
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return 0;
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}
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static int
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iwm_power_set_ba(struct iwm_softc *sc, struct iwm_vap *ivp)
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{
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struct iwm_beacon_filter_cmd cmd = {
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IWM_BF_CMD_CONFIG_DEFAULTS,
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.bf_enable_beacon_filter = htole32(1),
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};
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struct ieee80211vap *vap = &ivp->iv_vap;
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struct ieee80211_node *ni = vap->iv_bss;
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boolean_t bss_conf_ps = FALSE;
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if (!sc->sc_bf.bf_enabled)
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return 0;
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if (ni != NULL && IWM_NODE(ni)->in_assoc &&
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(vap->iv_flags & IEEE80211_F_PMGTON) != 0) {
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bss_conf_ps = TRUE;
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}
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sc->sc_bf.ba_enabled = !sc->sc_ps_disabled && bss_conf_ps;
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return _iwm_enable_beacon_filter(sc, ivp, &cmd);
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}
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int
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iwm_power_update_ps(struct iwm_softc *sc)
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{
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struct ieee80211vap *vap = TAILQ_FIRST(&sc->sc_ic.ic_vaps);
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int ret;
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ret = iwm_power_set_ps(sc);
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if (ret)
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return ret;
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if (vap != NULL)
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return iwm_power_set_ba(sc, IWM_VAP(vap));
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return 0;
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}
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int
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iwm_power_update_mac(struct iwm_softc *sc)
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{
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struct ieee80211vap *vap = TAILQ_FIRST(&sc->sc_ic.ic_vaps);
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int ret;
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ret = iwm_power_set_ps(sc);
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if (ret)
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return ret;
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if (vap != NULL) {
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ret = iwm_power_send_cmd(sc, IWM_VAP(vap));
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if (ret)
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return ret;
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}
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|
if (vap != NULL)
|
|
return iwm_power_set_ba(sc, IWM_VAP(vap));
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
iwm_power_update_device(struct iwm_softc *sc)
|
|
{
|
|
struct iwm_device_power_cmd cmd = {
|
|
.flags = 0,
|
|
};
|
|
|
|
if (iwm_power_scheme == IWM_POWER_SCHEME_CAM)
|
|
sc->sc_ps_disabled = TRUE;
|
|
|
|
if (!sc->sc_ps_disabled)
|
|
cmd.flags |= htole16(IWM_DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
|
|
|
|
IWM_DPRINTF(sc, IWM_DEBUG_PWRSAVE | IWM_DEBUG_CMD,
|
|
"Sending device power command with flags = 0x%X\n", cmd.flags);
|
|
|
|
return iwm_send_cmd_pdu(sc,
|
|
IWM_POWER_TABLE_CMD, 0, sizeof(cmd), &cmd);
|
|
}
|