7a79cebfba
connectivity interact with the net80211 stack. Historical background: originally wireless devices created an interface, just like Ethernet devices do. Name of an interface matched the name of the driver that created. Later, wlan(4) layer was introduced, and the wlanX interfaces become the actual interface, leaving original ones as "a parent interface" of wlanX. Kernelwise, the KPI between net80211 layer and a driver became a mix of methods that pass a pointer to struct ifnet as identifier and methods that pass pointer to struct ieee80211com. From user point of view, the parent interface just hangs on in the ifconfig list, and user can't do anything useful with it. Now, the struct ifnet goes away. The struct ieee80211com is the only KPI between a device driver and net80211. Details: - The struct ieee80211com is embedded into drivers softc. - Packets are sent via new ic_transmit method, which is very much like the previous if_transmit. - Bringing parent up/down is done via new ic_parent method, which notifies driver about any changes: number of wlan(4) interfaces, number of them in promisc or allmulti state. - Device specific ioctls (if any) are received on new ic_ioctl method. - Packets/errors accounting are done by the stack. In certain cases, when driver experiences errors and can not attribute them to any specific interface, driver updates ic_oerrors or ic_ierrors counters. Details on interface configuration with new world order: - A sequence of commands needed to bring up wireless DOESN"T change. - /etc/rc.conf parameters DON'T change. - List of devices that can be used to create wlan(4) interfaces is now provided by net.wlan.devices sysctl. Most drivers in this change were converted by me, except of wpi(4), that was done by Andriy Voskoboinyk. Big thanks to Kevin Lo for testing changes to at least 8 drivers. Thanks to pluknet@, Oliver Hartmann, Olivier Cochard, gjb@, mmoll@, op@ and lev@, who also participated in testing. Reviewed by: adrian Sponsored by: Netflix Sponsored by: Nginx, Inc.
306 lines
9.9 KiB
C
306 lines
9.9 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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__FBSDID("$FreeBSD$");
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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_mvm_phy_ctxt_cmd_hdr(struct iwm_softc *sc, struct iwm_mvm_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_mvm_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_FW_VALID_RX_ANT(sc),
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IWM_FW_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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cmd->rxchain_info = htole32(IWM_FW_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_FW_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_mvm_phy_ctxt_apply(struct iwm_softc *sc,
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struct iwm_mvm_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_mvm_phy_ctxt_cmd_hdr(sc, ctxt, &cmd, action, apply_time);
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/* Set the command data */
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iwm_mvm_phy_ctxt_cmd_data(sc, &cmd, ctxt->channel,
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chains_static, chains_dynamic);
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ret = iwm_mvm_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_mvm_phy_ctxt_add(struct iwm_softc *sc, struct iwm_mvm_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_mvm_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_mvm_phy_ctxt_changed(struct iwm_softc *sc,
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struct iwm_mvm_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_mvm_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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