319 lines
10 KiB
C
319 lines
10 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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/*-
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* Copyright (c) 2007-2010 Damien Bergamini <damien.bergamini@free.fr>
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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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#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_util.h>
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#include <dev/iwm/if_iwm_phy_ctxt.h>
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/*
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* BEGIN iwlwifi/mvm/phy-ctxt.c
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*/
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/*
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* Construct the generic fields of the PHY context command
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*/
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static void
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iwm_phy_ctxt_cmd_hdr(struct iwm_softc *sc, struct iwm_phy_ctxt *ctxt,
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struct iwm_phy_context_cmd *cmd, uint32_t action, uint32_t apply_time)
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{
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memset(cmd, 0, sizeof(struct iwm_phy_context_cmd));
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IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD,
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"%s: id=%d, colour=%d, action=%d, apply_time=%d\n",
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__func__,
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ctxt->id,
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ctxt->color,
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action,
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apply_time);
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cmd->id_and_color = htole32(IWM_FW_CMD_ID_AND_COLOR(ctxt->id,
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ctxt->color));
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cmd->action = htole32(action);
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cmd->apply_time = htole32(apply_time);
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}
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/*
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* Add the phy configuration to the PHY context command
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*/
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static void
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iwm_phy_ctxt_cmd_data(struct iwm_softc *sc,
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struct iwm_phy_context_cmd *cmd, struct ieee80211_channel *chan,
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uint8_t chains_static, uint8_t chains_dynamic)
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{
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struct ieee80211com *ic = &sc->sc_ic;
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uint8_t active_cnt, idle_cnt;
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IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD,
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"%s: 2ghz=%d, channel=%d, chains static=0x%x, dynamic=0x%x, "
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"rx_ant=0x%x, tx_ant=0x%x\n",
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__func__,
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!! IEEE80211_IS_CHAN_2GHZ(chan),
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ieee80211_chan2ieee(ic, chan),
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chains_static,
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chains_dynamic,
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iwm_get_valid_rx_ant(sc),
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iwm_get_valid_tx_ant(sc));
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cmd->ci.band = IEEE80211_IS_CHAN_2GHZ(chan) ?
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IWM_PHY_BAND_24 : IWM_PHY_BAND_5;
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cmd->ci.channel = ieee80211_chan2ieee(ic, chan);
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cmd->ci.width = IWM_PHY_VHT_CHANNEL_MODE20;
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cmd->ci.ctrl_pos = IWM_PHY_VHT_CTRL_POS_1_BELOW;
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/* Set rx the chains */
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idle_cnt = chains_static;
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active_cnt = chains_dynamic;
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/* In scenarios where we only ever use a single-stream rates,
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* i.e. legacy 11b/g/a associations, single-stream APs or even
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* static SMPS, enable both chains to get diversity, improving
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* the case where we're far enough from the AP that attenuation
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* between the two antennas is sufficiently different to impact
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* performance.
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*/
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if (active_cnt == 1 && iwm_rx_diversity_allowed(sc)) {
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idle_cnt = 2;
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active_cnt = 2;
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}
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cmd->rxchain_info = htole32(iwm_get_valid_rx_ant(sc) <<
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IWM_PHY_RX_CHAIN_VALID_POS);
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cmd->rxchain_info |= htole32(idle_cnt << IWM_PHY_RX_CHAIN_CNT_POS);
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cmd->rxchain_info |= htole32(active_cnt <<
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IWM_PHY_RX_CHAIN_MIMO_CNT_POS);
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cmd->txchain_info = htole32(iwm_get_valid_tx_ant(sc));
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}
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/*
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* Send a command
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* only if something in the configuration changed: in case that this is the
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* first time that the phy configuration is applied or in case that the phy
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* configuration changed from the previous apply.
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*/
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static int
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iwm_phy_ctxt_apply(struct iwm_softc *sc,
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struct iwm_phy_ctxt *ctxt,
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uint8_t chains_static, uint8_t chains_dynamic,
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uint32_t action, uint32_t apply_time)
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{
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struct iwm_phy_context_cmd cmd;
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int ret;
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IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD,
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"%s: called; channel=%p\n",
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__func__,
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ctxt->channel);
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/* Set the command header fields */
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iwm_phy_ctxt_cmd_hdr(sc, ctxt, &cmd, action, apply_time);
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/* Set the command data */
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iwm_phy_ctxt_cmd_data(sc, &cmd, ctxt->channel,
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chains_static, chains_dynamic);
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ret = iwm_send_cmd_pdu(sc, IWM_PHY_CONTEXT_CMD, IWM_CMD_SYNC,
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sizeof(struct iwm_phy_context_cmd), &cmd);
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if (ret) {
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device_printf(sc->sc_dev,
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"PHY ctxt cmd error. ret=%d\n", ret);
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}
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return ret;
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}
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/*
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* Send a command to add a PHY context based on the current HW configuration.
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*/
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int
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iwm_phy_ctxt_add(struct iwm_softc *sc, struct iwm_phy_ctxt *ctxt,
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struct ieee80211_channel *chan,
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uint8_t chains_static, uint8_t chains_dynamic)
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{
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ctxt->channel = chan;
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IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD,
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"%s: called; channel=%d\n",
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__func__,
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ieee80211_chan2ieee(&sc->sc_ic, chan));
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return iwm_phy_ctxt_apply(sc, ctxt,
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chains_static, chains_dynamic, IWM_FW_CTXT_ACTION_ADD, 0);
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}
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/*
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* Send a command to modify the PHY context based on the current HW
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* configuration. Note that the function does not check that the configuration
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* changed.
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*/
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int
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iwm_phy_ctxt_changed(struct iwm_softc *sc,
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struct iwm_phy_ctxt *ctxt, struct ieee80211_channel *chan,
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uint8_t chains_static, uint8_t chains_dynamic)
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{
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ctxt->channel = chan;
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IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD,
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"%s: called; channel=%d\n",
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__func__,
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ieee80211_chan2ieee(&sc->sc_ic, chan));
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return iwm_phy_ctxt_apply(sc, ctxt,
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chains_static, chains_dynamic, IWM_FW_CTXT_ACTION_MODIFY, 0);
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}
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/*
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* END iwlwifi/mvm/phy-ctxt.c
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*/
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