76039bc84f
to this event, adding if_var.h to files that do need it. Also, include all includes that now are included due to implicit pollution via if_var.h Sponsored by: Netflix Sponsored by: Nginx, Inc.
348 lines
8.7 KiB
C
348 lines
8.7 KiB
C
/*-
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* Copyright (c) 2013 Adrian Chadd <adrian@FreeBSD.org>
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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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* 1. 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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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* NO WARRANTY
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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 NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* This implements some very basic bluetooth coexistence methods for
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* the ath(4) hardware.
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*/
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#include "opt_ath.h"
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#include "opt_inet.h"
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#include "opt_wlan.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sysctl.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/errno.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/bus.h>
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#include <sys/socket.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_media.h>
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#include <net/if_arp.h>
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#include <net/ethernet.h> /* XXX for ether_sprintf */
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#include <net80211/ieee80211_var.h>
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#include <net/bpf.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#endif
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#include <dev/ath/if_athvar.h>
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#include <dev/ath/if_ath_btcoex.h>
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/*
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* Initial AR9285 / (WB195) bluetooth coexistence settings,
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* just for experimentation.
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*
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* Return 0 for OK; errno for error.
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*
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* XXX TODO: There needs to be a PCIe workaround to disable ASPM if
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* bluetooth coexistence is enabled.
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*/
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static int
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ath_btcoex_cfg_wb195(struct ath_softc *sc)
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{
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HAL_BT_COEX_INFO btinfo;
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HAL_BT_COEX_CONFIG btconfig;
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struct ath_hal *ah = sc->sc_ah;
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if (! ath_hal_btcoex_supported(ah))
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return (EINVAL);
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bzero(&btinfo, sizeof(btinfo));
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bzero(&btconfig, sizeof(btconfig));
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device_printf(sc->sc_dev, "Enabling WB195 BTCOEX\n");
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btinfo.bt_module = HAL_BT_MODULE_JANUS;
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btinfo.bt_coex_config = HAL_BT_COEX_CFG_3WIRE;
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/*
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* These are the three GPIO pins hooked up between the AR9285 and
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* the AR3011.
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*/
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btinfo.bt_gpio_bt_active = 6;
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btinfo.bt_gpio_bt_priority = 7;
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btinfo.bt_gpio_wlan_active = 5;
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btinfo.bt_active_polarity = 1; /* XXX not used */
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btinfo.bt_single_ant = 1; /* 1 antenna on ar9285 ? */
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btinfo.bt_isolation = 0; /* in dB, not used */
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ath_hal_btcoex_set_info(ah, &btinfo);
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btconfig.bt_time_extend = 0;
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btconfig.bt_txstate_extend = 1; /* true */
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btconfig.bt_txframe_extend = 1; /* true */
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btconfig.bt_mode = HAL_BT_COEX_MODE_SLOTTED;
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btconfig.bt_quiet_collision = 1; /* true */
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btconfig.bt_rxclear_polarity = 1; /* true */
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btconfig.bt_priority_time = 2;
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btconfig.bt_first_slot_time = 5;
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btconfig.bt_hold_rxclear = 1; /* true */
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ath_hal_btcoex_set_config(ah, &btconfig);
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/*
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* Enable antenna diversity.
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*/
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ath_hal_btcoex_set_parameter(ah, HAL_BT_COEX_ANTENNA_DIVERSITY, 1);
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return (0);
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}
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/*
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* Initial AR9485 / (WB225) bluetooth coexistence settings,
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* just for experimentation.
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*
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* Return 0 for OK; errno for error.
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*/
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static int
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ath_btcoex_cfg_wb225(struct ath_softc *sc)
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{
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HAL_BT_COEX_INFO btinfo;
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HAL_BT_COEX_CONFIG btconfig;
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struct ath_hal *ah = sc->sc_ah;
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if (! ath_hal_btcoex_supported(ah))
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return (EINVAL);
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bzero(&btinfo, sizeof(btinfo));
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bzero(&btconfig, sizeof(btconfig));
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device_printf(sc->sc_dev, "Enabling WB225 BTCOEX\n");
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btinfo.bt_module = HAL_BT_MODULE_JANUS; /* XXX not used? */
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btinfo.bt_coex_config = HAL_BT_COEX_CFG_3WIRE;
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/*
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* These are the three GPIO pins hooked up between the AR9485 and
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* the bluetooth module.
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*/
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btinfo.bt_gpio_bt_active = 4;
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btinfo.bt_gpio_bt_priority = 8;
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btinfo.bt_gpio_wlan_active = 5;
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btinfo.bt_active_polarity = 1; /* XXX not used */
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btinfo.bt_single_ant = 1; /* 1 antenna on ar9285 ? */
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btinfo.bt_isolation = 0; /* in dB, not used */
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ath_hal_btcoex_set_info(ah, &btinfo);
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btconfig.bt_time_extend = 0;
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btconfig.bt_txstate_extend = 1; /* true */
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btconfig.bt_txframe_extend = 1; /* true */
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btconfig.bt_mode = HAL_BT_COEX_MODE_SLOTTED;
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btconfig.bt_quiet_collision = 1; /* true */
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btconfig.bt_rxclear_polarity = 1; /* true */
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btconfig.bt_priority_time = 2;
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btconfig.bt_first_slot_time = 5;
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btconfig.bt_hold_rxclear = 1; /* true */
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ath_hal_btcoex_set_config(ah, &btconfig);
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/*
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* Enable antenna diversity.
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*/
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ath_hal_btcoex_set_parameter(ah, HAL_BT_COEX_ANTENNA_DIVERSITY, 1);
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return (0);
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}
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#if 0
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/*
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* When using bluetooth coexistence, ASPM needs to be disabled
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* otherwise the sleeping interferes with the bluetooth (USB)
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* operation and the MAC sleep/wakeup hardware.
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*
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* The PCIe powersave routine also needs to not be called
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* by the driver during suspend/resume, else things will get
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* a little odd. Check Linux ath9k for more details.
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*/
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static int
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ath_btcoex_aspm_wb195(struct ath_softc *sc)
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{
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/* XXX TODO: clear device ASPM L0S and L1 */
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/* XXX TODO: clear _parent_ ASPM L0S and L1 */
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}
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#endif
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/*
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* Methods which are required
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*/
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/*
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* Attach btcoex to the given interface
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*/
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int
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ath_btcoex_attach(struct ath_softc *sc)
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{
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int ret;
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struct ath_hal *ah = sc->sc_ah;
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const char *profname;
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/*
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* No chipset bluetooth coexistence? Then do nothing.
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*/
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if (! ath_hal_btcoex_supported(ah))
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return (0);
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/*
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* Look at the hints to determine which bluetooth
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* profile to configure.
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*/
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ret = resource_string_value(device_get_name(sc->sc_dev),
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device_get_unit(sc->sc_dev),
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"btcoex_profile",
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&profname);
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if (ret != 0) {
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/* nothing to do */
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return (0);
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}
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if (strncmp(profname, "wb195", 5) == 0) {
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ret = ath_btcoex_cfg_wb195(sc);
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} else if (strncmp(profname, "wb225", 5) == 0) {
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ret = ath_btcoex_cfg_wb225(sc);
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} else {
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return (0);
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}
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/*
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* Propagate up failure from the actual attach phase.
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*/
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if (ret != 0)
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return (ret);
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return (0);
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}
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/*
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* Detach btcoex from the given interface
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*/
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int
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ath_btcoex_detach(struct ath_softc *sc)
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{
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return (0);
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}
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/*
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* Configure or disable bluetooth coexistence on the given channel.
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*
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* For AR9285/AR9287/AR9485, we'll never see a 5GHz channel, so we just
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* assume bluetooth coexistence is always on.
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*
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* For AR9462, we may see a 5GHz channel; bluetooth coexistence should
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* not be enabled on those channels.
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*/
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int
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ath_btcoex_enable(struct ath_softc *sc, const struct ieee80211_channel *chan)
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{
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return (0);
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}
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/*
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* Handle ioctl requests from the diagnostic interface.
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*
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* The initial part of this code resembles ath_ioctl_diag();
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* it's likely a good idea to reduce duplication between
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* these two routines.
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*/
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int
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ath_btcoex_ioctl(struct ath_softc *sc, struct ath_diag *ad)
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{
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unsigned int id = ad->ad_id & ATH_DIAG_ID;
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void *indata = NULL;
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void *outdata = NULL;
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u_int32_t insize = ad->ad_in_size;
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u_int32_t outsize = ad->ad_out_size;
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int error = 0;
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// int val;
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if (ad->ad_id & ATH_DIAG_IN) {
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/*
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* Copy in data.
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*/
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indata = malloc(insize, M_TEMP, M_NOWAIT);
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if (indata == NULL) {
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error = ENOMEM;
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goto bad;
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}
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error = copyin(ad->ad_in_data, indata, insize);
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if (error)
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goto bad;
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}
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if (ad->ad_id & ATH_DIAG_DYN) {
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/*
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* Allocate a buffer for the results (otherwise the HAL
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* returns a pointer to a buffer where we can read the
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* results). Note that we depend on the HAL leaving this
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* pointer for us to use below in reclaiming the buffer;
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* may want to be more defensive.
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*/
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outdata = malloc(outsize, M_TEMP, M_NOWAIT);
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if (outdata == NULL) {
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error = ENOMEM;
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goto bad;
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}
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}
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switch (id) {
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default:
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error = EINVAL;
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}
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if (outsize < ad->ad_out_size)
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ad->ad_out_size = outsize;
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if (outdata && copyout(outdata, ad->ad_out_data, ad->ad_out_size))
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error = EFAULT;
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bad:
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if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL)
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free(indata, M_TEMP);
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if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL)
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free(outdata, M_TEMP);
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return (error);
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}
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