[mirror_ubuntu-kernels.git] / drivers / staging / brcm80211 / sys / wlc_stf.c

/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or 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 <wlc_cfg.h>
#include <typedefs.h>
#include <bcmdefs.h>
#include <osl.h>
#include <bcmutils.h>
#include <siutils.h>
#include <bcmendian.h>
#include <proto/802.11.h>
#include <wlioctl.h>
#include <bcmwpa.h>
#include <bcmwifi.h>
#include <d11.h>
#include <wlc_rate.h>
#include <wlc_pub.h>
#include <wlc_key.h>
#include <wlc_channel.h>
#include <wlc_bsscfg.h>
#include <wlc_mac80211.h>
#include <wlc_scb.h>
#include <wl_export.h>
#include <wlc_bmac.h>
#include <wlc_stf.h>

#define WLC_STF_SS_STBC_RX(wlc) (WLCISNPHY(wlc->band) && \
	NREV_GT(wlc->band->phyrev, 3) && NREV_LE(wlc->band->phyrev, 6))

static int8 wlc_stf_stbc_rx_get(wlc_info_t *wlc);
static bool wlc_stf_stbc_tx_set(wlc_info_t *wlc, int32 int_val);
static int wlc_stf_txcore_set(wlc_info_t *wlc, uint8 Nsts, uint8 val);
static int wlc_stf_spatial_policy_set(wlc_info_t *wlc, int val);
static void wlc_stf_stbc_rx_ht_update(wlc_info_t *wlc, int val);

static void _wlc_stf_phy_txant_upd(wlc_info_t *wlc);
static uint16 _wlc_stf_phytxchain_sel(wlc_info_t *wlc, ratespec_t rspec);

#define NSTS_1	1
#define NSTS_2	2
#define NSTS_3	3
#define NSTS_4	4
const uint8 txcore_default[5] = {
	(0),			/* bitmap of the core enabled */
	(0x01),			/* For Nsts = 1, enable core 1 */
	(0x03),			/* For Nsts = 2, enable core 1 & 2 */
	(0x07),			/* For Nsts = 3, enable core 1, 2 & 3 */
	(0x0f)			/* For Nsts = 4, enable all cores */
};

static void wlc_stf_stbc_rx_ht_update(wlc_info_t *wlc, int val)
{
	ASSERT((val == HT_CAP_RX_STBC_NO)
	       || (val == HT_CAP_RX_STBC_ONE_STREAM));

	/* MIMOPHYs rev3-6 cannot receive STBC with only one rx core active */
	if (WLC_STF_SS_STBC_RX(wlc)) {
		if ((wlc->stf->rxstreams == 1) && (val != HT_CAP_RX_STBC_NO))
			return;
	}

	wlc->ht_cap.cap &= ~HT_CAP_RX_STBC_MASK;
	wlc->ht_cap.cap |= (val << HT_CAP_RX_STBC_SHIFT);

	if (wlc->pub->up) {
		wlc_update_beacon(wlc);
		wlc_update_probe_resp(wlc, TRUE);
	}
}

/* every WLC_TEMPSENSE_PERIOD seconds temperature check to decide whether to turn on/off txchain */
void wlc_tempsense_upd(wlc_info_t *wlc)
{
	wlc_phy_t *pi = wlc->band->pi;
	uint active_chains, txchain;

	/* Check if the chip is too hot. Disable one Tx chain, if it is */
	/* high 4 bits are for Rx chain, low 4 bits are  for Tx chain */
	active_chains = wlc_phy_stf_chain_active_get(pi);
	txchain = active_chains & 0xf;

	if (wlc->stf->txchain == wlc->stf->hw_txchain) {
		if (txchain && (txchain < wlc->stf->hw_txchain)) {
			/* turn off 1 tx chain */
			wlc_stf_txchain_set(wlc, txchain, TRUE);
		}
	} else if (wlc->stf->txchain < wlc->stf->hw_txchain) {
		if (txchain == wlc->stf->hw_txchain) {
			/* turn back on txchain */
			wlc_stf_txchain_set(wlc, txchain, TRUE);
		}
	}
}

void
wlc_stf_ss_algo_channel_get(wlc_info_t *wlc, uint16 *ss_algo_channel,
			    chanspec_t chanspec)
{
	tx_power_t power;
	uint8 siso_mcs_id, cdd_mcs_id, stbc_mcs_id;

	/* Clear previous settings */
	*ss_algo_channel = 0;

	if (!wlc->pub->up) {
		*ss_algo_channel = (uint16) - 1;
		return;
	}

	wlc_phy_txpower_get_current(wlc->band->pi, &power,
				    CHSPEC_CHANNEL(chanspec));

	siso_mcs_id = (CHSPEC_IS40(chanspec)) ?
	    WL_TX_POWER_MCS40_SISO_FIRST : WL_TX_POWER_MCS20_SISO_FIRST;
	cdd_mcs_id = (CHSPEC_IS40(chanspec)) ?
	    WL_TX_POWER_MCS40_CDD_FIRST : WL_TX_POWER_MCS20_CDD_FIRST;
	stbc_mcs_id = (CHSPEC_IS40(chanspec)) ?
	    WL_TX_POWER_MCS40_STBC_FIRST : WL_TX_POWER_MCS20_STBC_FIRST;

	/* criteria to choose stf mode */

	/* the "+3dbm (12 0.25db units)" is to account for the fact that with CDD, tx occurs
	 * on both chains
	 */
	if (power.target[siso_mcs_id] > (power.target[cdd_mcs_id] + 12))
		setbit(ss_algo_channel, PHY_TXC1_MODE_SISO);
	else
		setbit(ss_algo_channel, PHY_TXC1_MODE_CDD);

	/* STBC is ORed into to algo channel as STBC requires per-packet SCB capability check
	 * so cannot be default mode of operation. One of SISO, CDD have to be set
	 */
	if (power.target[siso_mcs_id] <= (power.target[stbc_mcs_id] + 12))
		setbit(ss_algo_channel, PHY_TXC1_MODE_STBC);
}

static int8 wlc_stf_stbc_rx_get(wlc_info_t *wlc)
{
	return (wlc->ht_cap.cap & HT_CAP_RX_STBC_MASK) >> HT_CAP_RX_STBC_SHIFT;
}

static bool wlc_stf_stbc_tx_set(wlc_info_t *wlc, int32 int_val)
{
	if ((int_val != AUTO) && (int_val != OFF) && (int_val != ON)) {
		return FALSE;
	}

	if ((int_val == ON) && (wlc->stf->txstreams == 1))
		return FALSE;

	if ((int_val == OFF) || (wlc->stf->txstreams == 1)
	    || !WLC_STBC_CAP_PHY(wlc))
		wlc->ht_cap.cap &= ~HT_CAP_TX_STBC;
	else
		wlc->ht_cap.cap |= HT_CAP_TX_STBC;

	wlc->bandstate[BAND_2G_INDEX]->band_stf_stbc_tx = (int8) int_val;
	wlc->bandstate[BAND_5G_INDEX]->band_stf_stbc_tx = (int8) int_val;

	return TRUE;
}

bool wlc_stf_stbc_rx_set(wlc_info_t *wlc, int32 int_val)
{
	if ((int_val != HT_CAP_RX_STBC_NO)
	    && (int_val != HT_CAP_RX_STBC_ONE_STREAM)) {
		return FALSE;
	}

	if (WLC_STF_SS_STBC_RX(wlc)) {
		if ((int_val != HT_CAP_RX_STBC_NO)
		    && (wlc->stf->rxstreams == 1))
			return FALSE;
	}

	wlc_stf_stbc_rx_ht_update(wlc, int_val);
	return TRUE;
}

static int wlc_stf_txcore_set(wlc_info_t *wlc, uint8 Nsts, uint8 core_mask)
{
	WL_TRACE(("wl%d: %s: Nsts %d core_mask %x\n",
		  wlc->pub->unit, __func__, Nsts, core_mask));

	ASSERT((Nsts > 0) && (Nsts <= MAX_STREAMS_SUPPORTED));

	if (WLC_BITSCNT(core_mask) > wlc->stf->txstreams) {
		core_mask = 0;
	}

	if ((WLC_BITSCNT(core_mask) == wlc->stf->txstreams) &&
	    ((core_mask & ~wlc->stf->txchain)
	     || !(core_mask & wlc->stf->txchain))) {
		core_mask = wlc->stf->txchain;
	}

	ASSERT(!core_mask || Nsts <= WLC_BITSCNT(core_mask));

	wlc->stf->txcore[Nsts] = core_mask;
	/* Nsts = 1..4, txcore index = 1..4 */
	if (Nsts == 1) {
		/* Needs to update beacon and ucode generated response
		 * frames when 1 stream core map changed
		 */
		wlc->stf->phytxant = core_mask << PHY_TXC_ANT_SHIFT;
		wlc_bmac_txant_set(wlc->hw, wlc->stf->phytxant);
		if (wlc->clk) {
			wlc_suspend_mac_and_wait(wlc);
			wlc_beacon_phytxctl_txant_upd(wlc, wlc->bcn_rspec);
			wlc_enable_mac(wlc);
		}
	}

	return BCME_OK;
}

static int wlc_stf_spatial_policy_set(wlc_info_t *wlc, int val)
{
	int i;
	uint8 core_mask = 0;

	WL_TRACE(("wl%d: %s: val %x\n", wlc->pub->unit, __func__, val));

	wlc->stf->spatial_policy = (int8) val;
	for (i = 1; i <= MAX_STREAMS_SUPPORTED; i++) {
		core_mask = (val == MAX_SPATIAL_EXPANSION) ?
		    wlc->stf->txchain : txcore_default[i];
		wlc_stf_txcore_set(wlc, (uint8) i, core_mask);
	}
	return BCME_OK;
}

int wlc_stf_txchain_set(wlc_info_t *wlc, int32 int_val, bool force)
{
	uint8 txchain = (uint8) int_val;
	uint8 txstreams;
	uint i;

	if (wlc->stf->txchain == txchain)
		return BCME_OK;

	if ((txchain & ~wlc->stf->hw_txchain)
	    || !(txchain & wlc->stf->hw_txchain))
		return BCME_RANGE;

	/* if nrate override is configured to be non-SISO STF mode, reject reducing txchain to 1 */
	txstreams = (uint8) WLC_BITSCNT(txchain);
	if (txstreams > MAX_STREAMS_SUPPORTED)
		return BCME_RANGE;

	if (txstreams == 1) {
		for (i = 0; i < NBANDS(wlc); i++)
			if ((RSPEC_STF(wlc->bandstate[i]->rspec_override) !=
			     PHY_TXC1_MODE_SISO)
			    || (RSPEC_STF(wlc->bandstate[i]->mrspec_override) !=
				PHY_TXC1_MODE_SISO)) {
				if (!force)
					return BCME_ERROR;

				/* over-write the override rspec */
				if (RSPEC_STF(wlc->bandstate[i]->rspec_override)
				    != PHY_TXC1_MODE_SISO) {
					wlc->bandstate[i]->rspec_override = 0;
					WL_ERROR(("%s(): temp sense override non-SISO" " rspec_override.\n", __func__));
				}
				if (RSPEC_STF
				    (wlc->bandstate[i]->mrspec_override) !=
				    PHY_TXC1_MODE_SISO) {
					wlc->bandstate[i]->mrspec_override = 0;
					WL_ERROR(("%s(): temp sense override non-SISO" " mrspec_override.\n", __func__));
				}
			}
	}

	wlc->stf->txchain = txchain;
	wlc->stf->txstreams = txstreams;
	wlc_stf_stbc_tx_set(wlc, wlc->band->band_stf_stbc_tx);
	wlc_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]);
	wlc_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]);
	wlc->stf->txant =
	    (wlc->stf->txstreams == 1) ? ANT_TX_FORCE_0 : ANT_TX_DEF;
	_wlc_stf_phy_txant_upd(wlc);

	wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain,
			      wlc->stf->rxchain);

	for (i = 1; i <= MAX_STREAMS_SUPPORTED; i++)
		wlc_stf_txcore_set(wlc, (uint8) i, txcore_default[i]);

	return BCME_OK;
}

int wlc_stf_rxchain_set(wlc_info_t *wlc, int32 int_val)
{
	uint8 rxchain_cnt;
	uint8 rxchain = (uint8) int_val;
	uint8 mimops_mode;
	uint8 old_rxchain, old_rxchain_cnt;

	if (wlc->stf->rxchain == rxchain)
		return BCME_OK;

	if ((rxchain & ~wlc->stf->hw_rxchain)
	    || !(rxchain & wlc->stf->hw_rxchain))
		return BCME_RANGE;

	rxchain_cnt = (uint8) WLC_BITSCNT(rxchain);
	if (WLC_STF_SS_STBC_RX(wlc)) {
		if ((rxchain_cnt == 1)
		    && (wlc_stf_stbc_rx_get(wlc) != HT_CAP_RX_STBC_NO))
			return BCME_RANGE;
	}

	if (APSTA_ENAB(wlc->pub) && (wlc->pub->associated))
		return BCME_ASSOCIATED;

	old_rxchain = wlc->stf->rxchain;
	old_rxchain_cnt = wlc->stf->rxstreams;

	wlc->stf->rxchain = rxchain;
	wlc->stf->rxstreams = rxchain_cnt;

	if (rxchain_cnt != old_rxchain_cnt) {
		mimops_mode =
		    (rxchain_cnt == 1) ? HT_CAP_MIMO_PS_ON : HT_CAP_MIMO_PS_OFF;
		wlc->mimops_PM = mimops_mode;
		if (AP_ENAB(wlc->pub)) {
			wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain,
					      wlc->stf->rxchain);
			wlc_ht_mimops_cap_update(wlc, mimops_mode);
			if (wlc->pub->associated)
				wlc_mimops_action_ht_send(wlc, wlc->cfg,
							  mimops_mode);
			return BCME_OK;
		}
		if (wlc->pub->associated) {
			if (mimops_mode == HT_CAP_MIMO_PS_OFF) {
				/* if mimops is off, turn on the Rx chain first */
				wlc_phy_stf_chain_set(wlc->band->pi,
						      wlc->stf->txchain,
						      wlc->stf->rxchain);
				wlc_ht_mimops_cap_update(wlc, mimops_mode);
			}
		} else {
			wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain,
					      wlc->stf->rxchain);
			wlc_ht_mimops_cap_update(wlc, mimops_mode);
		}
	} else if (old_rxchain != rxchain)
		wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain,
				      wlc->stf->rxchain);

	return BCME_OK;
}

/* update wlc->stf->ss_opmode which represents the operational stf_ss mode we're using */
int wlc_stf_ss_update(wlc_info_t *wlc, wlcband_t *band)
{
	int ret_code = 0;
	uint8 prev_stf_ss;
	uint8 upd_stf_ss;

	prev_stf_ss = wlc->stf->ss_opmode;

	/* NOTE: opmode can only be SISO or CDD as STBC is decided on a per-packet basis */
	if (WLC_STBC_CAP_PHY(wlc) &&
	    wlc->stf->ss_algosel_auto
	    && (wlc->stf->ss_algo_channel != (uint16) - 1)) {
		ASSERT(isset(&wlc->stf->ss_algo_channel, PHY_TXC1_MODE_CDD)
		       || isset(&wlc->stf->ss_algo_channel,
				PHY_TXC1_MODE_SISO));
		upd_stf_ss = (wlc->stf->no_cddstbc || (wlc->stf->txstreams == 1)
			      || isset(&wlc->stf->ss_algo_channel,
				       PHY_TXC1_MODE_SISO)) ? PHY_TXC1_MODE_SISO
		    : PHY_TXC1_MODE_CDD;
	} else {
		if (wlc->band != band)
			return ret_code;
		upd_stf_ss = (wlc->stf->no_cddstbc
			      || (wlc->stf->txstreams ==
				  1)) ? PHY_TXC1_MODE_SISO : band->
		    band_stf_ss_mode;
	}
	if (prev_stf_ss != upd_stf_ss) {
		wlc->stf->ss_opmode = upd_stf_ss;
		wlc_bmac_band_stf_ss_set(wlc->hw, upd_stf_ss);
	}

	return ret_code;
}

int BCMATTACHFN(wlc_stf_attach) (wlc_info_t *wlc) {
	wlc->bandstate[BAND_2G_INDEX]->band_stf_ss_mode = PHY_TXC1_MODE_SISO;
	wlc->bandstate[BAND_5G_INDEX]->band_stf_ss_mode = PHY_TXC1_MODE_CDD;

	if (WLCISNPHY(wlc->band) &&
	    (wlc_phy_txpower_hw_ctrl_get(wlc->band->pi) != PHY_TPC_HW_ON))
		wlc->bandstate[BAND_2G_INDEX]->band_stf_ss_mode =
		    PHY_TXC1_MODE_CDD;
	wlc_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]);
	wlc_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]);

	wlc_stf_stbc_rx_ht_update(wlc, HT_CAP_RX_STBC_NO);
	wlc->bandstate[BAND_2G_INDEX]->band_stf_stbc_tx = OFF;
	wlc->bandstate[BAND_5G_INDEX]->band_stf_stbc_tx = OFF;

	if (WLC_STBC_CAP_PHY(wlc)) {
		wlc->stf->ss_algosel_auto = TRUE;
		wlc->stf->ss_algo_channel = (uint16) - 1;	/* Init the default value */
	}
	return 0;
}

void BCMATTACHFN(wlc_stf_detach) (wlc_info_t *wlc) {
}

int wlc_stf_ant_txant_validate(wlc_info_t *wlc, int8 val)
{
	int bcmerror = BCME_OK;

	/* when there is only 1 tx_streams, don't allow to change the txant */
	if (WLCISNPHY(wlc->band) && (wlc->stf->txstreams == 1))
		return ((val == wlc->stf->txant) ? bcmerror : BCME_RANGE);

	switch (val) {
	case -1:
		val = ANT_TX_DEF;
		break;
	case 0:
		val = ANT_TX_FORCE_0;
		break;
	case 1:
		val = ANT_TX_FORCE_1;
		break;
	case 3:
		val = ANT_TX_LAST_RX;
		break;
	default:
		bcmerror = BCME_RANGE;
		break;
	}

	if (bcmerror == BCME_OK)
		wlc->stf->txant = (int8) val;

	return bcmerror;

}

/*
 * Centralized txant update function. call it whenever wlc->stf->txant and/or wlc->stf->txchain
 *  change
 *
 * Antennas are controlled by ucode indirectly, which drives PHY or GPIO to
 *   achieve various tx/rx antenna selection schemes
 *
 * legacy phy, bit 6 and bit 7 means antenna 0 and 1 respectively, bit6+bit7 means auto(last rx)
 * for NREV<3, bit 6 and bit 7 means antenna 0 and 1 respectively, bit6+bit7 means last rx and
 *    do tx-antenna selection for SISO transmissions
 * for NREV=3, bit 6 and bit _8_ means antenna 0 and 1 respectively, bit6+bit7 means last rx and
 *    do tx-antenna selection for SISO transmissions
 * for NREV>=7, bit 6 and bit 7 mean antenna 0 and 1 respectively, nit6+bit7 means both cores active
*/
static void _wlc_stf_phy_txant_upd(wlc_info_t *wlc)
{
	int8 txant;

	txant = (int8) wlc->stf->txant;
	ASSERT(txant == ANT_TX_FORCE_0 || txant == ANT_TX_FORCE_1
	       || txant == ANT_TX_LAST_RX);

	if (WLC_PHY_11N_CAP(wlc->band)) {
		if (txant == ANT_TX_FORCE_0) {
			wlc->stf->phytxant = PHY_TXC_ANT_0;
		} else if (txant == ANT_TX_FORCE_1) {
			wlc->stf->phytxant = PHY_TXC_ANT_1;

			if (WLCISNPHY(wlc->band) &&
			    NREV_GE(wlc->band->phyrev, 3)
			    && NREV_LT(wlc->band->phyrev, 7)) {
				wlc->stf->phytxant = PHY_TXC_ANT_2;
			}
		} else {
			if (WLCISLCNPHY(wlc->band) || WLCISSSLPNPHY(wlc->band))
				wlc->stf->phytxant = PHY_TXC_LCNPHY_ANT_LAST;
			else {
				/* keep this assert to catch out of sync wlc->stf->txcore */
				ASSERT(wlc->stf->txchain > 0);
				wlc->stf->phytxant =
				    wlc->stf->txchain << PHY_TXC_ANT_SHIFT;
			}
		}
	} else {
		if (txant == ANT_TX_FORCE_0)
			wlc->stf->phytxant = PHY_TXC_OLD_ANT_0;
		else if (txant == ANT_TX_FORCE_1)
			wlc->stf->phytxant = PHY_TXC_OLD_ANT_1;
		else
			wlc->stf->phytxant = PHY_TXC_OLD_ANT_LAST;
	}

	wlc_bmac_txant_set(wlc->hw, wlc->stf->phytxant);
}

void wlc_stf_phy_txant_upd(wlc_info_t *wlc)
{
	_wlc_stf_phy_txant_upd(wlc);
}

void BCMATTACHFN(wlc_stf_phy_chain_calc) (wlc_info_t *wlc) {
	/* get available rx/tx chains */
	wlc->stf->hw_txchain = (uint8) getintvar(wlc->pub->vars, "txchain");
	wlc->stf->hw_rxchain = (uint8) getintvar(wlc->pub->vars, "rxchain");

	/* these parameter are intended to be used for all PHY types */
	if (wlc->stf->hw_txchain == 0 || wlc->stf->hw_txchain == 0xf) {
		if (WLCISNPHY(wlc->band)) {
			wlc->stf->hw_txchain = TXCHAIN_DEF_NPHY;
		} else {
			wlc->stf->hw_txchain = TXCHAIN_DEF;
		}
	}

	wlc->stf->txchain = wlc->stf->hw_txchain;
	wlc->stf->txstreams = (uint8) WLC_BITSCNT(wlc->stf->hw_txchain);

	if (wlc->stf->hw_rxchain == 0 || wlc->stf->hw_rxchain == 0xf) {
		if (WLCISNPHY(wlc->band)) {
			wlc->stf->hw_rxchain = RXCHAIN_DEF_NPHY;
		} else {
			wlc->stf->hw_rxchain = RXCHAIN_DEF;
		}
	}

	wlc->stf->rxchain = wlc->stf->hw_rxchain;
	wlc->stf->rxstreams = (uint8) WLC_BITSCNT(wlc->stf->hw_rxchain);

	/* initialize the txcore table */
	bcopy(txcore_default, wlc->stf->txcore, sizeof(wlc->stf->txcore));

	/* default spatial_policy */
	wlc->stf->spatial_policy = MIN_SPATIAL_EXPANSION;
	wlc_stf_spatial_policy_set(wlc, MIN_SPATIAL_EXPANSION);
}

static uint16 _wlc_stf_phytxchain_sel(wlc_info_t *wlc, ratespec_t rspec)
{
	uint16 phytxant = wlc->stf->phytxant;

	if (RSPEC_STF(rspec) != PHY_TXC1_MODE_SISO) {
		ASSERT(wlc->stf->txstreams > 1);
		phytxant = wlc->stf->txchain << PHY_TXC_ANT_SHIFT;
	} else if (wlc->stf->txant == ANT_TX_DEF)
		phytxant = wlc->stf->txchain << PHY_TXC_ANT_SHIFT;
	phytxant &= PHY_TXC_ANT_MASK;
	return phytxant;
}

uint16 wlc_stf_phytxchain_sel(wlc_info_t *wlc, ratespec_t rspec)
{
	return _wlc_stf_phytxchain_sel(wlc, rspec);
}

uint16 wlc_stf_d11hdrs_phyctl_txant(wlc_info_t *wlc, ratespec_t rspec)
{
	uint16 phytxant = wlc->stf->phytxant;
	uint16 mask = PHY_TXC_ANT_MASK;

	/* for non-siso rates or default setting, use the available chains */
	if (WLCISNPHY(wlc->band)) {
		ASSERT(wlc->stf->txchain != 0);
		phytxant = _wlc_stf_phytxchain_sel(wlc, rspec);
		mask = PHY_TXC_HTANT_MASK;
	}
	phytxant |= phytxant & mask;
	return phytxant;
}
Commit	Line	Data
a9533e7e HP	1	/*
	2	* Copyright (c) 2010 Broadcom Corporation
	3	*
	4	* Permission to use, copy, modify, and/or distribute this software for any
	5	* purpose with or without fee is hereby granted, provided that the above
	6	* copyright notice and this permission notice appear in all copies.
	7	*
	8	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	9	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	10	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
	11	* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	12	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
	13	* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
	14	* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	15	*/
	16
	17	#include <wlc_cfg.h>
	18	#include <typedefs.h>
	19	#include <bcmdefs.h>
	20	#include <osl.h>
	21	#include <bcmutils.h>
	22	#include <siutils.h>
	23	#include <bcmendian.h>
	24	#include <proto/802.11.h>
	25	#include <wlioctl.h>
	26	#include <bcmwpa.h>
	27	#include <bcmwifi.h>
	28	#include <d11.h>
	29	#include <wlc_rate.h>
	30	#include <wlc_pub.h>
	31	#include <wlc_key.h>
	32	#include <wlc_channel.h>
	33	#include <wlc_bsscfg.h>
	34	#include <wlc_mac80211.h>
	35	#include <wlc_scb.h>
	36	#include <wl_export.h>
	37	#include <wlc_bmac.h>
	38	#include <wlc_stf.h>
	39
	40	#define WLC_STF_SS_STBC_RX(wlc) (WLCISNPHY(wlc->band) && \
	41	NREV_GT(wlc->band->phyrev, 3) && NREV_LE(wlc->band->phyrev, 6))
	42
7cc4a4c0 JC	43	static int8 wlc_stf_stbc_rx_get(wlc_info_t *wlc);
	44	static bool wlc_stf_stbc_tx_set(wlc_info_t *wlc, int32 int_val);
	45	static int wlc_stf_txcore_set(wlc_info_t *wlc, uint8 Nsts, uint8 val);
	46	static int wlc_stf_spatial_policy_set(wlc_info_t *wlc, int val);
	47	static void wlc_stf_stbc_rx_ht_update(wlc_info_t *wlc, int val);
a9533e7e	48
7cc4a4c0 JC	49	static void _wlc_stf_phy_txant_upd(wlc_info_t *wlc);
7cc4a4c0 JC	50	static uint16 _wlc_stf_phytxchain_sel(wlc_info_t *wlc, ratespec_t rspec);
a9533e7e HP	51
	52	#define NSTS_1 1
	53	#define NSTS_2 2
	54	#define NSTS_3 3
	55	#define NSTS_4 4
	56	const uint8 txcore_default[5] = {
	57	(0), /* bitmap of the core enabled */
	58	(0x01), /* For Nsts = 1, enable core 1 */
	59	(0x03), /* For Nsts = 2, enable core 1 & 2 */
	60	(0x07), /* For Nsts = 3, enable core 1, 2 & 3 */
	61	(0x0f) /* For Nsts = 4, enable all cores */
	62	};
	63
7cc4a4c0	64	static void wlc_stf_stbc_rx_ht_update(wlc_info_t *wlc, int val)
a9533e7e HP	65	{
	66	ASSERT((val == HT_CAP_RX_STBC_NO)
	67	\|\| (val == HT_CAP_RX_STBC_ONE_STREAM));
	68
	69	/* MIMOPHYs rev3-6 cannot receive STBC with only one rx core active */
	70	if (WLC_STF_SS_STBC_RX(wlc)) {
	71	if ((wlc->stf->rxstreams == 1) && (val != HT_CAP_RX_STBC_NO))
	72	return;
	73	}
	74
	75	wlc->ht_cap.cap &= ~HT_CAP_RX_STBC_MASK;
	76	wlc->ht_cap.cap \|= (val << HT_CAP_RX_STBC_SHIFT);
	77
	78	if (wlc->pub->up) {
	79	wlc_update_beacon(wlc);
	80	wlc_update_probe_resp(wlc, TRUE);
	81	}
	82	}
	83
	84	/* every WLC_TEMPSENSE_PERIOD seconds temperature check to decide whether to turn on/off txchain */
7cc4a4c0	85	void wlc_tempsense_upd(wlc_info_t *wlc)
a9533e7e HP	86	{
	87	wlc_phy_t *pi = wlc->band->pi;
	88	uint active_chains, txchain;
	89
	90	/* Check if the chip is too hot. Disable one Tx chain, if it is */
	91	/* high 4 bits are for Rx chain, low 4 bits are for Tx chain */
	92	active_chains = wlc_phy_stf_chain_active_get(pi);
	93	txchain = active_chains & 0xf;
	94
	95	if (wlc->stf->txchain == wlc->stf->hw_txchain) {
	96	if (txchain && (txchain < wlc->stf->hw_txchain)) {
	97	/* turn off 1 tx chain */
	98	wlc_stf_txchain_set(wlc, txchain, TRUE);
	99	}
	100	} else if (wlc->stf->txchain < wlc->stf->hw_txchain) {
	101	if (txchain == wlc->stf->hw_txchain) {
	102	/* turn back on txchain */
	103	wlc_stf_txchain_set(wlc, txchain, TRUE);
	104	}
	105	}
	106	}
	107
	108	void
7cc4a4c0	109	wlc_stf_ss_algo_channel_get(wlc_info_t wlc, uint16 ss_algo_channel,
a9533e7e HP	110	chanspec_t chanspec)
	111	{
	112	tx_power_t power;
	113	uint8 siso_mcs_id, cdd_mcs_id, stbc_mcs_id;
	114
	115	/* Clear previous settings */
	116	*ss_algo_channel = 0;
	117
	118	if (!wlc->pub->up) {
	119	*ss_algo_channel = (uint16) - 1;
	120	return;
	121	}
	122
	123	wlc_phy_txpower_get_current(wlc->band->pi, &power,
	124	CHSPEC_CHANNEL(chanspec));
	125
	126	siso_mcs_id = (CHSPEC_IS40(chanspec)) ?
	127	WL_TX_POWER_MCS40_SISO_FIRST : WL_TX_POWER_MCS20_SISO_FIRST;
	128	cdd_mcs_id = (CHSPEC_IS40(chanspec)) ?
	129	WL_TX_POWER_MCS40_CDD_FIRST : WL_TX_POWER_MCS20_CDD_FIRST;
	130	stbc_mcs_id = (CHSPEC_IS40(chanspec)) ?
	131	WL_TX_POWER_MCS40_STBC_FIRST : WL_TX_POWER_MCS20_STBC_FIRST;
	132
	133	/* criteria to choose stf mode */
	134
	135	/* the "+3dbm (12 0.25db units)" is to account for the fact that with CDD, tx occurs
	136	* on both chains
	137	*/
	138	if (power.target[siso_mcs_id] > (power.target[cdd_mcs_id] + 12))
	139	setbit(ss_algo_channel, PHY_TXC1_MODE_SISO);
	140	else
	141	setbit(ss_algo_channel, PHY_TXC1_MODE_CDD);
	142
	143	/* STBC is ORed into to algo channel as STBC requires per-packet SCB capability check
	144	* so cannot be default mode of operation. One of SISO, CDD have to be set
	145	*/
	146	if (power.target[siso_mcs_id] <= (power.target[stbc_mcs_id] + 12))
	147	setbit(ss_algo_channel, PHY_TXC1_MODE_STBC);
	148	}
	149
7cc4a4c0	150	static int8 wlc_stf_stbc_rx_get(wlc_info_t *wlc)
a9533e7e HP	151	{
	152	return (wlc->ht_cap.cap & HT_CAP_RX_STBC_MASK) >> HT_CAP_RX_STBC_SHIFT;
	153	}
	154
7cc4a4c0	155	static bool wlc_stf_stbc_tx_set(wlc_info_t *wlc, int32 int_val)
a9533e7e HP	156	{
	157	if ((int_val != AUTO) && (int_val != OFF) && (int_val != ON)) {
	158	return FALSE;
	159	}
	160
	161	if ((int_val == ON) && (wlc->stf->txstreams == 1))
	162	return FALSE;
	163
	164	if ((int_val == OFF) \|\| (wlc->stf->txstreams == 1)
	165	\|\| !WLC_STBC_CAP_PHY(wlc))
	166	wlc->ht_cap.cap &= ~HT_CAP_TX_STBC;
	167	else
	168	wlc->ht_cap.cap \|= HT_CAP_TX_STBC;
	169
	170	wlc->bandstate[BAND_2G_INDEX]->band_stf_stbc_tx = (int8) int_val;
	171	wlc->bandstate[BAND_5G_INDEX]->band_stf_stbc_tx = (int8) int_val;
	172
	173	return TRUE;
	174	}
	175
7cc4a4c0	176	bool wlc_stf_stbc_rx_set(wlc_info_t *wlc, int32 int_val)
a9533e7e HP	177	{
	178	if ((int_val != HT_CAP_RX_STBC_NO)
	179	&& (int_val != HT_CAP_RX_STBC_ONE_STREAM)) {
	180	return FALSE;
	181	}
	182
	183	if (WLC_STF_SS_STBC_RX(wlc)) {
	184	if ((int_val != HT_CAP_RX_STBC_NO)
	185	&& (wlc->stf->rxstreams == 1))
	186	return FALSE;
	187	}
	188
	189	wlc_stf_stbc_rx_ht_update(wlc, int_val);
	190	return TRUE;
	191	}
	192
7cc4a4c0	193	static int wlc_stf_txcore_set(wlc_info_t *wlc, uint8 Nsts, uint8 core_mask)
a9533e7e HP	194	{
	195	WL_TRACE(("wl%d: %s: Nsts %d core_mask %x\n",
	196	wlc->pub->unit, __func__, Nsts, core_mask));
	197
	198	ASSERT((Nsts > 0) && (Nsts <= MAX_STREAMS_SUPPORTED));
	199
	200	if (WLC_BITSCNT(core_mask) > wlc->stf->txstreams) {
	201	core_mask = 0;
	202	}
	203
	204	if ((WLC_BITSCNT(core_mask) == wlc->stf->txstreams) &&
	205	((core_mask & ~wlc->stf->txchain)
	206	\|\| !(core_mask & wlc->stf->txchain))) {
	207	core_mask = wlc->stf->txchain;
	208	}
	209
	210	ASSERT(!core_mask \|\| Nsts <= WLC_BITSCNT(core_mask));
	211
	212	wlc->stf->txcore[Nsts] = core_mask;
	213	/* Nsts = 1..4, txcore index = 1..4 */
	214	if (Nsts == 1) {
	215	/* Needs to update beacon and ucode generated response
	216	* frames when 1 stream core map changed
	217	*/
	218	wlc->stf->phytxant = core_mask << PHY_TXC_ANT_SHIFT;
	219	wlc_bmac_txant_set(wlc->hw, wlc->stf->phytxant);
	220	if (wlc->clk) {
	221	wlc_suspend_mac_and_wait(wlc);
	222	wlc_beacon_phytxctl_txant_upd(wlc, wlc->bcn_rspec);
	223	wlc_enable_mac(wlc);
	224	}
	225	}
	226
	227	return BCME_OK;
	228	}
	229
7cc4a4c0	230	static int wlc_stf_spatial_policy_set(wlc_info_t *wlc, int val)
a9533e7e HP	231	{
	232	int i;
	233	uint8 core_mask = 0;
	234
	235	WL_TRACE(("wl%d: %s: val %x\n", wlc->pub->unit, __func__, val));
	236
	237	wlc->stf->spatial_policy = (int8) val;
	238	for (i = 1; i <= MAX_STREAMS_SUPPORTED; i++) {
	239	core_mask = (val == MAX_SPATIAL_EXPANSION) ?
	240	wlc->stf->txchain : txcore_default[i];
	241	wlc_stf_txcore_set(wlc, (uint8) i, core_mask);
	242	}
	243	return BCME_OK;
	244	}
	245
7cc4a4c0	246	int wlc_stf_txchain_set(wlc_info_t *wlc, int32 int_val, bool force)
a9533e7e HP	247	{
	248	uint8 txchain = (uint8) int_val;
	249	uint8 txstreams;
	250	uint i;
	251
	252	if (wlc->stf->txchain == txchain)
	253	return BCME_OK;
	254
	255	if ((txchain & ~wlc->stf->hw_txchain)
	256	\|\| !(txchain & wlc->stf->hw_txchain))
	257	return BCME_RANGE;
	258
	259	/* if nrate override is configured to be non-SISO STF mode, reject reducing txchain to 1 */
	260	txstreams = (uint8) WLC_BITSCNT(txchain);
	261	if (txstreams > MAX_STREAMS_SUPPORTED)
	262	return BCME_RANGE;
	263
	264	if (txstreams == 1) {
	265	for (i = 0; i < NBANDS(wlc); i++)
	266	if ((RSPEC_STF(wlc->bandstate[i]->rspec_override) !=
	267	PHY_TXC1_MODE_SISO)
	268	\|\| (RSPEC_STF(wlc->bandstate[i]->mrspec_override) !=
	269	PHY_TXC1_MODE_SISO)) {
	270	if (!force)
	271	return BCME_ERROR;
	272
	273	/* over-write the override rspec */
	274	if (RSPEC_STF(wlc->bandstate[i]->rspec_override)
	275	!= PHY_TXC1_MODE_SISO) {
	276	wlc->bandstate[i]->rspec_override = 0;
	277	WL_ERROR(("%s(): temp sense override non-SISO" " rspec_override.\n", __func__));
	278	}
	279	if (RSPEC_STF
	280	(wlc->bandstate[i]->mrspec_override) !=
	281	PHY_TXC1_MODE_SISO) {
	282	wlc->bandstate[i]->mrspec_override = 0;
	283	WL_ERROR(("%s(): temp sense override non-SISO" " mrspec_override.\n", __func__));
	284	}
	285	}
	286	}
	287
	288	wlc->stf->txchain = txchain;
	289	wlc->stf->txstreams = txstreams;
	290	wlc_stf_stbc_tx_set(wlc, wlc->band->band_stf_stbc_tx);
	291	wlc_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]);
	292	wlc_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]);
	293	wlc->stf->txant =
	294	(wlc->stf->txstreams == 1) ? ANT_TX_FORCE_0 : ANT_TX_DEF;
	295	_wlc_stf_phy_txant_upd(wlc);
	296
	297	wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain,
	298	wlc->stf->rxchain);
	299
	300	for (i = 1; i <= MAX_STREAMS_SUPPORTED; i++)
	301	wlc_stf_txcore_set(wlc, (uint8) i, txcore_default[i]);
	302
	303	return BCME_OK;
	304	}
	305
7cc4a4c0	306	int wlc_stf_rxchain_set(wlc_info_t *wlc, int32 int_val)
a9533e7e HP	307	{
	308	uint8 rxchain_cnt;
	309	uint8 rxchain = (uint8) int_val;
	310	uint8 mimops_mode;
	311	uint8 old_rxchain, old_rxchain_cnt;
	312
	313	if (wlc->stf->rxchain == rxchain)
	314	return BCME_OK;
	315
	316	if ((rxchain & ~wlc->stf->hw_rxchain)
	317	\|\| !(rxchain & wlc->stf->hw_rxchain))
	318	return BCME_RANGE;
	319
	320	rxchain_cnt = (uint8) WLC_BITSCNT(rxchain);
	321	if (WLC_STF_SS_STBC_RX(wlc)) {
	322	if ((rxchain_cnt == 1)
	323	&& (wlc_stf_stbc_rx_get(wlc) != HT_CAP_RX_STBC_NO))
	324	return BCME_RANGE;
	325	}
	326
	327	if (APSTA_ENAB(wlc->pub) && (wlc->pub->associated))
	328	return BCME_ASSOCIATED;
	329
	330	old_rxchain = wlc->stf->rxchain;
	331	old_rxchain_cnt = wlc->stf->rxstreams;
	332
	333	wlc->stf->rxchain = rxchain;
	334	wlc->stf->rxstreams = rxchain_cnt;
	335
	336	if (rxchain_cnt != old_rxchain_cnt) {
	337	mimops_mode =
	338	(rxchain_cnt == 1) ? HT_CAP_MIMO_PS_ON : HT_CAP_MIMO_PS_OFF;
	339	wlc->mimops_PM = mimops_mode;
	340	if (AP_ENAB(wlc->pub)) {
	341	wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain,
	342	wlc->stf->rxchain);
	343	wlc_ht_mimops_cap_update(wlc, mimops_mode);
	344	if (wlc->pub->associated)
	345	wlc_mimops_action_ht_send(wlc, wlc->cfg,
	346	mimops_mode);
	347	return BCME_OK;
	348	}
	349	if (wlc->pub->associated) {
	350	if (mimops_mode == HT_CAP_MIMO_PS_OFF) {
	351	/* if mimops is off, turn on the Rx chain first */
	352	wlc_phy_stf_chain_set(wlc->band->pi,
	353	wlc->stf->txchain,
	354	wlc->stf->rxchain);
	355	wlc_ht_mimops_cap_update(wlc, mimops_mode);
	356	}
	357	} else {
	358	wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain,
	359	wlc->stf->rxchain);
	360	wlc_ht_mimops_cap_update(wlc, mimops_mode);
	361	}
	362	} else if (old_rxchain != rxchain)
	363	wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain,
	364	wlc->stf->rxchain);
	365
	366	return BCME_OK;
	367	}
	368
	369	/* update wlc->stf->ss_opmode which represents the operational stf_ss mode we're using */
7cc4a4c0	370	int wlc_stf_ss_update(wlc_info_t wlc, wlcband_t band)
a9533e7e HP	371	{
	372	int ret_code = 0;
	373	uint8 prev_stf_ss;
	374	uint8 upd_stf_ss;
	375
	376	prev_stf_ss = wlc->stf->ss_opmode;
	377
	378	/* NOTE: opmode can only be SISO or CDD as STBC is decided on a per-packet basis */
	379	if (WLC_STBC_CAP_PHY(wlc) &&
	380	wlc->stf->ss_algosel_auto
	381	&& (wlc->stf->ss_algo_channel != (uint16) - 1)) {
	382	ASSERT(isset(&wlc->stf->ss_algo_channel, PHY_TXC1_MODE_CDD)
	383	\|\| isset(&wlc->stf->ss_algo_channel,
	384	PHY_TXC1_MODE_SISO));
	385	upd_stf_ss = (wlc->stf->no_cddstbc \|\| (wlc->stf->txstreams == 1)
	386	\|\| isset(&wlc->stf->ss_algo_channel,
	387	PHY_TXC1_MODE_SISO)) ? PHY_TXC1_MODE_SISO
	388	: PHY_TXC1_MODE_CDD;
	389	} else {
	390	if (wlc->band != band)
	391	return ret_code;
	392	upd_stf_ss = (wlc->stf->no_cddstbc
	393	\|\| (wlc->stf->txstreams ==
	394	1)) ? PHY_TXC1_MODE_SISO : band->
	395	band_stf_ss_mode;
	396	}
	397	if (prev_stf_ss != upd_stf_ss) {
	398	wlc->stf->ss_opmode = upd_stf_ss;
	399	wlc_bmac_band_stf_ss_set(wlc->hw, upd_stf_ss);
	400	}
	401
	402	return ret_code;
	403	}
	404
7cc4a4c0	405	int BCMATTACHFN(wlc_stf_attach) (wlc_info_t *wlc) {
a9533e7e HP	406	wlc->bandstate[BAND_2G_INDEX]->band_stf_ss_mode = PHY_TXC1_MODE_SISO;
	407	wlc->bandstate[BAND_5G_INDEX]->band_stf_ss_mode = PHY_TXC1_MODE_CDD;
	408
	409	if (WLCISNPHY(wlc->band) &&
	410	(wlc_phy_txpower_hw_ctrl_get(wlc->band->pi) != PHY_TPC_HW_ON))
	411	wlc->bandstate[BAND_2G_INDEX]->band_stf_ss_mode =
	412	PHY_TXC1_MODE_CDD;
	413	wlc_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]);
	414	wlc_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]);
	415
	416	wlc_stf_stbc_rx_ht_update(wlc, HT_CAP_RX_STBC_NO);
	417	wlc->bandstate[BAND_2G_INDEX]->band_stf_stbc_tx = OFF;
	418	wlc->bandstate[BAND_5G_INDEX]->band_stf_stbc_tx = OFF;
	419
	420	if (WLC_STBC_CAP_PHY(wlc)) {
	421	wlc->stf->ss_algosel_auto = TRUE;
	422	wlc->stf->ss_algo_channel = (uint16) - 1; /* Init the default value */
	423	}
	424	return 0;
	425	}
	426
7cc4a4c0	427	void BCMATTACHFN(wlc_stf_detach) (wlc_info_t *wlc) {
a9533e7e HP	428	}
a9533e7e HP	429
7cc4a4c0	430	int wlc_stf_ant_txant_validate(wlc_info_t *wlc, int8 val)
a9533e7e HP	431	{
	432	int bcmerror = BCME_OK;
	433
	434	/* when there is only 1 tx_streams, don't allow to change the txant */
	435	if (WLCISNPHY(wlc->band) && (wlc->stf->txstreams == 1))
	436	return ((val == wlc->stf->txant) ? bcmerror : BCME_RANGE);
	437
	438	switch (val) {
	439	case -1:
	440	val = ANT_TX_DEF;
	441	break;
	442	case 0:
	443	val = ANT_TX_FORCE_0;
	444	break;
	445	case 1:
	446	val = ANT_TX_FORCE_1;
	447	break;
	448	case 3:
	449	val = ANT_TX_LAST_RX;
	450	break;
	451	default:
	452	bcmerror = BCME_RANGE;
	453	break;
	454	}
	455
	456	if (bcmerror == BCME_OK)
	457	wlc->stf->txant = (int8) val;
	458
	459	return bcmerror;
	460
	461	}
	462
	463	/*
	464	* Centralized txant update function. call it whenever wlc->stf->txant and/or wlc->stf->txchain
	465	* change
	466	*
	467	* Antennas are controlled by ucode indirectly, which drives PHY or GPIO to
	468	* achieve various tx/rx antenna selection schemes
	469	*
	470	* legacy phy, bit 6 and bit 7 means antenna 0 and 1 respectively, bit6+bit7 means auto(last rx)
	471	* for NREV<3, bit 6 and bit 7 means antenna 0 and 1 respectively, bit6+bit7 means last rx and
	472	* do tx-antenna selection for SISO transmissions
	473	* for NREV=3, bit 6 and bit _8_ means antenna 0 and 1 respectively, bit6+bit7 means last rx and
	474	* do tx-antenna selection for SISO transmissions
	475	* for NREV>=7, bit 6 and bit 7 mean antenna 0 and 1 respectively, nit6+bit7 means both cores active
	476	*/
7cc4a4c0	477	static void _wlc_stf_phy_txant_upd(wlc_info_t *wlc)
a9533e7e HP	478	{
	479	int8 txant;
	480
	481	txant = (int8) wlc->stf->txant;
	482	ASSERT(txant == ANT_TX_FORCE_0 \|\| txant == ANT_TX_FORCE_1
	483	\|\| txant == ANT_TX_LAST_RX);
	484
	485	if (WLC_PHY_11N_CAP(wlc->band)) {
	486	if (txant == ANT_TX_FORCE_0) {
	487	wlc->stf->phytxant = PHY_TXC_ANT_0;
	488	} else if (txant == ANT_TX_FORCE_1) {
	489	wlc->stf->phytxant = PHY_TXC_ANT_1;
	490
	491	if (WLCISNPHY(wlc->band) &&
	492	NREV_GE(wlc->band->phyrev, 3)
	493	&& NREV_LT(wlc->band->phyrev, 7)) {
	494	wlc->stf->phytxant = PHY_TXC_ANT_2;
	495	}
	496	} else {
	497	if (WLCISLCNPHY(wlc->band) \|\| WLCISSSLPNPHY(wlc->band))
	498	wlc->stf->phytxant = PHY_TXC_LCNPHY_ANT_LAST;
	499	else {
	500	/* keep this assert to catch out of sync wlc->stf->txcore */
	501	ASSERT(wlc->stf->txchain > 0);
	502	wlc->stf->phytxant =
	503	wlc->stf->txchain << PHY_TXC_ANT_SHIFT;
	504	}
	505	}
	506	} else {
	507	if (txant == ANT_TX_FORCE_0)
	508	wlc->stf->phytxant = PHY_TXC_OLD_ANT_0;
	509	else if (txant == ANT_TX_FORCE_1)
	510	wlc->stf->phytxant = PHY_TXC_OLD_ANT_1;
	511	else
	512	wlc->stf->phytxant = PHY_TXC_OLD_ANT_LAST;
	513	}
	514
	515	wlc_bmac_txant_set(wlc->hw, wlc->stf->phytxant);
	516	}
	517
7cc4a4c0	518	void wlc_stf_phy_txant_upd(wlc_info_t *wlc)
a9533e7e HP	519	{
	520	_wlc_stf_phy_txant_upd(wlc);
	521	}
	522
7cc4a4c0	523	void BCMATTACHFN(wlc_stf_phy_chain_calc) (wlc_info_t *wlc) {
a9533e7e HP	524	/* get available rx/tx chains */
	525	wlc->stf->hw_txchain = (uint8) getintvar(wlc->pub->vars, "txchain");
	526	wlc->stf->hw_rxchain = (uint8) getintvar(wlc->pub->vars, "rxchain");
	527
	528	/* these parameter are intended to be used for all PHY types */
	529	if (wlc->stf->hw_txchain == 0 \|\| wlc->stf->hw_txchain == 0xf) {
	530	if (WLCISNPHY(wlc->band)) {
	531	wlc->stf->hw_txchain = TXCHAIN_DEF_NPHY;
	532	} else {
	533	wlc->stf->hw_txchain = TXCHAIN_DEF;
	534	}
	535	}
	536
	537	wlc->stf->txchain = wlc->stf->hw_txchain;
	538	wlc->stf->txstreams = (uint8) WLC_BITSCNT(wlc->stf->hw_txchain);
	539
	540	if (wlc->stf->hw_rxchain == 0 \|\| wlc->stf->hw_rxchain == 0xf) {
	541	if (WLCISNPHY(wlc->band)) {
	542	wlc->stf->hw_rxchain = RXCHAIN_DEF_NPHY;
	543	} else {
	544	wlc->stf->hw_rxchain = RXCHAIN_DEF;
	545	}
	546	}
	547
	548	wlc->stf->rxchain = wlc->stf->hw_rxchain;
	549	wlc->stf->rxstreams = (uint8) WLC_BITSCNT(wlc->stf->hw_rxchain);
	550
	551	/* initialize the txcore table */
	552	bcopy(txcore_default, wlc->stf->txcore, sizeof(wlc->stf->txcore));
	553
	554	/* default spatial_policy */
	555	wlc->stf->spatial_policy = MIN_SPATIAL_EXPANSION;
	556	wlc_stf_spatial_policy_set(wlc, MIN_SPATIAL_EXPANSION);
	557	}
	558
7cc4a4c0	559	static uint16 _wlc_stf_phytxchain_sel(wlc_info_t *wlc, ratespec_t rspec)
a9533e7e HP	560	{
	561	uint16 phytxant = wlc->stf->phytxant;
	562
	563	if (RSPEC_STF(rspec) != PHY_TXC1_MODE_SISO) {
	564	ASSERT(wlc->stf->txstreams > 1);
	565	phytxant = wlc->stf->txchain << PHY_TXC_ANT_SHIFT;
	566	} else if (wlc->stf->txant == ANT_TX_DEF)
	567	phytxant = wlc->stf->txchain << PHY_TXC_ANT_SHIFT;
	568	phytxant &= PHY_TXC_ANT_MASK;
	569	return phytxant;
	570	}
	571
7cc4a4c0	572	uint16 wlc_stf_phytxchain_sel(wlc_info_t *wlc, ratespec_t rspec)
a9533e7e HP	573	{
	574	return _wlc_stf_phytxchain_sel(wlc, rspec);
	575	}
	576
7cc4a4c0	577	uint16 wlc_stf_d11hdrs_phyctl_txant(wlc_info_t *wlc, ratespec_t rspec)
a9533e7e HP	578	{
	579	uint16 phytxant = wlc->stf->phytxant;
	580	uint16 mask = PHY_TXC_ANT_MASK;
	581
	582	/* for non-siso rates or default setting, use the available chains */
	583	if (WLCISNPHY(wlc->band)) {
	584	ASSERT(wlc->stf->txchain != 0);
	585	phytxant = _wlc_stf_phytxchain_sel(wlc, rspec);
	586	mask = PHY_TXC_HTANT_MASK;
	587	}
	588	phytxant \|= phytxant & mask;
	589	return phytxant;
	590	}