/* $OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $ */
/*
* Copyright (c) 2014 genua mbh <info@genua.de>
* Copyright (c) 2014 Fixup Software Ltd.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*-
* Based on BSD-licensed source modules in the Linux iwlwifi driver,
* which were used as the reference documentation for this implementation.
*
* Driver version we are currently based off of is
* Linux 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd)
*
***********************************************************************
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called COPYING.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*
* BSD LICENSE
*
* Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*-
* Copyright (c) 2007-2010 Damien Bergamini <damien.bergamini@free.fr>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_wlan.h"
#include "opt_iwm.h"
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/endian.h>
#include <sys/firmware.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/mutex.h>
#include <sys/module.h>
#include <sys/proc.h>
#include <sys/rman.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/linker.h>
#include <machine/bus.h>
#include <machine/endian.h>
#include <machine/resource.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/if_ether.h>
#include <netinet/ip.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_regdomain.h>
#include <net80211/ieee80211_ratectl.h>
#include <net80211/ieee80211_radiotap.h>
#include <dev/iwm/if_iwmreg.h>
#include <dev/iwm/if_iwmvar.h>
#include <dev/iwm/if_iwm_debug.h>
#include <dev/iwm/if_iwm_util.h>
#include <dev/iwm/if_iwm_phy_ctxt.h>
/*
* BEGIN iwlwifi/mvm/phy-ctxt.c
*/
/*
* Construct the generic fields of the PHY context command
*/
static void
iwm_mvm_phy_ctxt_cmd_hdr(struct iwm_softc *sc, struct iwm_mvm_phy_ctxt *ctxt,
struct iwm_phy_context_cmd *cmd, uint32_t action, uint32_t apply_time)
{
memset(cmd, 0, sizeof(struct iwm_phy_context_cmd));
IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD,
"%s: id=%d, colour=%d, action=%d, apply_time=%d\n",
__func__,
ctxt->id,
ctxt->color,
action,
apply_time);
cmd->id_and_color = htole32(IWM_FW_CMD_ID_AND_COLOR(ctxt->id,
ctxt->color));
cmd->action = htole32(action);
cmd->apply_time = htole32(apply_time);
}
/*
* Add the phy configuration to the PHY context command
*/
static void
iwm_mvm_phy_ctxt_cmd_data(struct iwm_softc *sc,
struct iwm_phy_context_cmd *cmd, struct ieee80211_channel *chan,
uint8_t chains_static, uint8_t chains_dynamic)
{
struct ieee80211com *ic = &sc->sc_ic;
uint8_t active_cnt, idle_cnt;
IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD,
"%s: 2ghz=%d, channel=%d, chains static=0x%x, dynamic=0x%x, "
"rx_ant=0x%x, tx_ant=0x%x\n",
__func__,
!! IEEE80211_IS_CHAN_2GHZ(chan),
ieee80211_chan2ieee(ic, chan),
chains_static,
chains_dynamic,
iwm_mvm_get_valid_rx_ant(sc),
iwm_mvm_get_valid_tx_ant(sc));
cmd->ci.band = IEEE80211_IS_CHAN_2GHZ(chan) ?
IWM_PHY_BAND_24 : IWM_PHY_BAND_5;
cmd->ci.channel = ieee80211_chan2ieee(ic, chan);
cmd->ci.width = IWM_PHY_VHT_CHANNEL_MODE20;
cmd->ci.ctrl_pos = IWM_PHY_VHT_CTRL_POS_1_BELOW;
/* Set rx the chains */
idle_cnt = chains_static;
active_cnt = chains_dynamic;
/* In scenarios where we only ever use a single-stream rates,
* i.e. legacy 11b/g/a associations, single-stream APs or even
* static SMPS, enable both chains to get diversity, improving
* the case where we're far enough from the AP that attenuation
* between the two antennas is sufficiently different to impact
* performance.
*/
if (active_cnt == 1 && iwm_mvm_rx_diversity_allowed(sc)) {
idle_cnt = 2;
active_cnt = 2;
}
cmd->rxchain_info = htole32(iwm_mvm_get_valid_rx_ant(sc) <<
IWM_PHY_RX_CHAIN_VALID_POS);
cmd->rxchain_info |= htole32(idle_cnt << IWM_PHY_RX_CHAIN_CNT_POS);
cmd->rxchain_info |= htole32(active_cnt <<
IWM_PHY_RX_CHAIN_MIMO_CNT_POS);
cmd->txchain_info = htole32(iwm_mvm_get_valid_tx_ant(sc));
}
/*
* Send a command
* only if something in the configuration changed: in case that this is the
* first time that the phy configuration is applied or in case that the phy
* configuration changed from the previous apply.
*/
static int
iwm_mvm_phy_ctxt_apply(struct iwm_softc *sc,
struct iwm_mvm_phy_ctxt *ctxt,
uint8_t chains_static, uint8_t chains_dynamic,
uint32_t action, uint32_t apply_time)
{
struct iwm_phy_context_cmd cmd;
int ret;
IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD,
"%s: called; channel=%p\n",
__func__,
ctxt->channel);
/* Set the command header fields */
iwm_mvm_phy_ctxt_cmd_hdr(sc, ctxt, &cmd, action, apply_time);
/* Set the command data */
iwm_mvm_phy_ctxt_cmd_data(sc, &cmd, ctxt->channel,
chains_static, chains_dynamic);
ret = iwm_mvm_send_cmd_pdu(sc, IWM_PHY_CONTEXT_CMD, IWM_CMD_SYNC,
sizeof(struct iwm_phy_context_cmd), &cmd);
if (ret) {
device_printf(sc->sc_dev,
"PHY ctxt cmd error. ret=%d\n", ret);
}
return ret;
}
/*
* Send a command to add a PHY context based on the current HW configuration.
*/
int
iwm_mvm_phy_ctxt_add(struct iwm_softc *sc, struct iwm_mvm_phy_ctxt *ctxt,
struct ieee80211_channel *chan,
uint8_t chains_static, uint8_t chains_dynamic)
{
ctxt->channel = chan;
IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD,
"%s: called; channel=%d\n",
__func__,
ieee80211_chan2ieee(&sc->sc_ic, chan));
return iwm_mvm_phy_ctxt_apply(sc, ctxt,
chains_static, chains_dynamic, IWM_FW_CTXT_ACTION_ADD, 0);
}
/*
* Send a command to modify the PHY context based on the current HW
* configuration. Note that the function does not check that the configuration
* changed.
*/
int
iwm_mvm_phy_ctxt_changed(struct iwm_softc *sc,
struct iwm_mvm_phy_ctxt *ctxt, struct ieee80211_channel *chan,
uint8_t chains_static, uint8_t chains_dynamic)
{
ctxt->channel = chan;
IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD,
"%s: called; channel=%d\n",
__func__,
ieee80211_chan2ieee(&sc->sc_ic, chan));
return iwm_mvm_phy_ctxt_apply(sc, ctxt,
chains_static, chains_dynamic, IWM_FW_CTXT_ACTION_MODIFY, 0);
}
/*
* END iwlwifi/mvm/phy-ctxt.c
*/
