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freebsd-dev/sys/dev/bwn/if_bwn_phy_common.c

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/*-
* Copyright (c) 2009-2010 Weongyo Jeong <weongyo@freebsd.org>
* Copyright (c) 2016 Adrian Chadd <adrian@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
*
* NO WARRANTY
* 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 NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_bwn.h"
#include "opt_wlan.h"
/*
* The Broadcom Wireless LAN controller driver.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/endian.h>
#include <sys/errno.h>
#include <sys/firmware.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_llc.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/siba/siba_ids.h>
#include <dev/siba/sibareg.h>
#include <dev/siba/sibavar.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_radiotap.h>
#include <net80211/ieee80211_regdomain.h>
#include <net80211/ieee80211_phy.h>
#include <net80211/ieee80211_ratectl.h>
#include <dev/bwn/if_bwnreg.h>
#include <dev/bwn/if_bwnvar.h>
#include <dev/bwn/if_bwn_chipid.h>
#include <dev/bwn/if_bwn_debug.h>
#include <dev/bwn/if_bwn_misc.h>
#include <dev/bwn/if_bwn_phy_common.h>
void
bwn_mac_switch_freq(struct bwn_mac *mac, int spurmode)
{
struct bwn_softc *sc = mac->mac_sc;
uint16_t chip_id = siba_get_chipid(sc->sc_dev);
if (chip_id == BCMA_CHIP_ID_BCM4331) {
switch (spurmode) {
case 2: /* 168 Mhz: 2^26/168 = 0x61862 */
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x1862);
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x6);
break;
case 1: /* 164 Mhz: 2^26/164 = 0x63e70 */
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x3e70);
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x6);
break;
default: /* 160 Mhz: 2^26/160 = 0x66666 */
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x6666);
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x6);
break;
}
} else if (chip_id == BCMA_CHIP_ID_BCM43131 ||
chip_id == BCMA_CHIP_ID_BCM43217 ||
chip_id == BCMA_CHIP_ID_BCM43222 ||
chip_id == BCMA_CHIP_ID_BCM43224 ||
chip_id == BCMA_CHIP_ID_BCM43225 ||
chip_id == BCMA_CHIP_ID_BCM43227 ||
chip_id == BCMA_CHIP_ID_BCM43228) {
switch (spurmode) {
case 2: /* 126 Mhz */
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x2082);
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x8);
break;
case 1: /* 123 Mhz */
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x5341);
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x8);
break;
default: /* 120 Mhz */
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x8889);
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x8);
break;
}
} else if (mac->mac_phy.type == BWN_PHYTYPE_LCN) {
switch (spurmode) {
case 1: /* 82 Mhz */
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x7CE0);
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0xC);
break;
default: /* 80 Mhz */
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0xCCCD);
BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0xC);
break;
}
}
}
/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/BmacPhyClkFgc */
void
bwn_phy_force_clock(struct bwn_mac *mac, int force)
{
struct bwn_softc *sc = mac->mac_sc;
uint32_t tmp;
/* XXX Only for N, HT and AC PHYs */
/* XXX bhnd bus */
if (bwn_is_bus_siba(mac)) {
tmp = siba_read_4(sc->sc_dev, SIBA_TGSLOW);
if (force)
tmp |= SIBA_TGSLOW_FGC;
else
tmp &= ~SIBA_TGSLOW_FGC;
siba_write_4(sc->sc_dev, SIBA_TGSLOW, tmp);
}
}
int
bwn_radio_wait_value(struct bwn_mac *mac, uint16_t offset, uint16_t mask,
uint16_t value, int delay, int timeout)
{
uint16_t val;
int i;
for (i = 0; i < timeout; i += delay) {
val = BWN_RF_READ(mac, offset);
if ((val & mask) == value)
return (1);
DELAY(delay);
}
return (0);
}
void
bwn_mac_phy_clock_set(struct bwn_mac *mac, int enabled)
{
struct bwn_softc *sc = mac->mac_sc;
uint32_t val;
/* XXX bhnd bus */
if (bwn_is_bus_siba(mac)) {
val = siba_read_4(sc->sc_dev, SIBA_TGSLOW);
if (enabled)
val |= BWN_TGSLOW_MACPHYCLKEN;
else
val &= ~BWN_TGSLOW_MACPHYCLKEN;
siba_write_4(sc->sc_dev, SIBA_TGSLOW, val);
}
}
/* http://bcm-v4.sipsolutions.net/802.11/PHY/BmacCorePllReset */
void
bwn_wireless_core_phy_pll_reset(struct bwn_mac *mac)
{
struct bwn_softc *sc = mac->mac_sc;
/* XXX bhnd bus */
if (bwn_is_bus_siba(mac)) {
siba_cc_write32(sc->sc_dev, SIBA_CC_CHIPCTL_ADDR, 0);
siba_cc_mask32(sc->sc_dev, SIBA_CC_CHIPCTL_DATA, ~0x4);
siba_cc_set32(sc->sc_dev, SIBA_CC_CHIPCTL_DATA, 0x4);
siba_cc_mask32(sc->sc_dev, SIBA_CC_CHIPCTL_DATA, ~0x4);
}
}
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