diff options
Diffstat (limited to 'drivers/staging/brcm80211/brcmsmac/stf.c')
-rw-r--r-- | drivers/staging/brcm80211/brcmsmac/stf.c | 477 |
1 files changed, 0 insertions, 477 deletions
diff --git a/drivers/staging/brcm80211/brcmsmac/stf.c b/drivers/staging/brcm80211/brcmsmac/stf.c deleted file mode 100644 index a55ff010178..00000000000 --- a/drivers/staging/brcm80211/brcmsmac/stf.c +++ /dev/null @@ -1,477 +0,0 @@ -/* - * 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 <net/mac80211.h> - -#include "types.h" -#include "d11.h" -#include "rate.h" -#include "phy/phy_hal.h" -#include "channel.h" -#include "main.h" -#include "bmac.h" -#include "stf.h" - -#define MIN_SPATIAL_EXPANSION 0 -#define MAX_SPATIAL_EXPANSION 1 - -#define BRCMS_STF_SS_STBC_RX(wlc) (BRCMS_ISNPHY(wlc->band) && \ - NREV_GT(wlc->band->phyrev, 3) && NREV_LE(wlc->band->phyrev, 6)) - -static bool brcms_c_stf_stbc_tx_set(struct brcms_c_info *wlc, s32 int_val); -static int brcms_c_stf_txcore_set(struct brcms_c_info *wlc, u8 Nsts, u8 val); -static int brcms_c_stf_spatial_policy_set(struct brcms_c_info *wlc, int val); -static void brcms_c_stf_stbc_rx_ht_update(struct brcms_c_info *wlc, int val); - -static void _brcms_c_stf_phy_txant_upd(struct brcms_c_info *wlc); -static u16 _brcms_c_stf_phytxchain_sel(struct brcms_c_info *wlc, - ratespec_t rspec); - -#define NSTS_1 1 -#define NSTS_2 2 -#define NSTS_3 3 -#define NSTS_4 4 -const u8 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 brcms_c_stf_stbc_rx_ht_update(struct brcms_c_info *wlc, int val) -{ - /* MIMOPHYs rev3-6 cannot receive STBC with only one rx core active */ - if (BRCMS_STF_SS_STBC_RX(wlc)) { - if ((wlc->stf->rxstreams == 1) && (val != HT_CAP_RX_STBC_NO)) - return; - } - - wlc->ht_cap.cap_info &= ~IEEE80211_HT_CAP_RX_STBC; - wlc->ht_cap.cap_info |= (val << IEEE80211_HT_CAP_RX_STBC_SHIFT); - - if (wlc->pub->up) { - brcms_c_update_beacon(wlc); - brcms_c_update_probe_resp(wlc, true); - } -} - -/* every WLC_TEMPSENSE_PERIOD seconds temperature check to decide whether to turn on/off txchain */ -void brcms_c_tempsense_upd(struct brcms_c_info *wlc) -{ - struct brcms_phy_pub *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 */ - brcms_c_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 */ - brcms_c_stf_txchain_set(wlc, txchain, true); - } - } -} - -void -brcms_c_stf_ss_algo_channel_get(struct brcms_c_info *wlc, u16 *ss_algo_channel, - chanspec_t chanspec) -{ - struct tx_power power; - u8 siso_mcs_id, cdd_mcs_id, stbc_mcs_id; - - /* Clear previous settings */ - *ss_algo_channel = 0; - - if (!wlc->pub->up) { - *ss_algo_channel = (u16) -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 bool brcms_c_stf_stbc_tx_set(struct brcms_c_info *wlc, s32 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) - || !BRCMS_STBC_CAP_PHY(wlc)) - wlc->ht_cap.cap_info &= ~IEEE80211_HT_CAP_TX_STBC; - else - wlc->ht_cap.cap_info |= IEEE80211_HT_CAP_TX_STBC; - - wlc->bandstate[BAND_2G_INDEX]->band_stf_stbc_tx = (s8) int_val; - wlc->bandstate[BAND_5G_INDEX]->band_stf_stbc_tx = (s8) int_val; - - return true; -} - -bool brcms_c_stf_stbc_rx_set(struct brcms_c_info *wlc, s32 int_val) -{ - if ((int_val != HT_CAP_RX_STBC_NO) - && (int_val != HT_CAP_RX_STBC_ONE_STREAM)) { - return false; - } - - if (BRCMS_STF_SS_STBC_RX(wlc)) { - if ((int_val != HT_CAP_RX_STBC_NO) - && (wlc->stf->rxstreams == 1)) - return false; - } - - brcms_c_stf_stbc_rx_ht_update(wlc, int_val); - return true; -} - -static int brcms_c_stf_txcore_set(struct brcms_c_info *wlc, u8 Nsts, - u8 core_mask) -{ - BCMMSG(wlc->wiphy, "wl%d: Nsts %d core_mask %x\n", - wlc->pub->unit, Nsts, core_mask); - - if (BRCMS_BITSCNT(core_mask) > wlc->stf->txstreams) { - core_mask = 0; - } - - if ((BRCMS_BITSCNT(core_mask) == wlc->stf->txstreams) && - ((core_mask & ~wlc->stf->txchain) - || !(core_mask & wlc->stf->txchain))) { - core_mask = wlc->stf->txchain; - } - - 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; - brcms_b_txant_set(wlc->hw, wlc->stf->phytxant); - if (wlc->clk) { - brcms_c_suspend_mac_and_wait(wlc); - brcms_c_beacon_phytxctl_txant_upd(wlc, wlc->bcn_rspec); - brcms_c_enable_mac(wlc); - } - } - - return 0; -} - -static int brcms_c_stf_spatial_policy_set(struct brcms_c_info *wlc, int val) -{ - int i; - u8 core_mask = 0; - - BCMMSG(wlc->wiphy, "wl%d: val %x\n", wlc->pub->unit, val); - - wlc->stf->spatial_policy = (s8) val; - for (i = 1; i <= MAX_STREAMS_SUPPORTED; i++) { - core_mask = (val == MAX_SPATIAL_EXPANSION) ? - wlc->stf->txchain : txcore_default[i]; - brcms_c_stf_txcore_set(wlc, (u8) i, core_mask); - } - return 0; -} - -int brcms_c_stf_txchain_set(struct brcms_c_info *wlc, s32 int_val, bool force) -{ - u8 txchain = (u8) int_val; - u8 txstreams; - uint i; - - if (wlc->stf->txchain == txchain) - return 0; - - if ((txchain & ~wlc->stf->hw_txchain) - || !(txchain & wlc->stf->hw_txchain)) - return -EINVAL; - - /* if nrate override is configured to be non-SISO STF mode, reject reducing txchain to 1 */ - txstreams = (u8) BRCMS_BITSCNT(txchain); - if (txstreams > MAX_STREAMS_SUPPORTED) - return -EINVAL; - - 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 -EBADE; - - /* over-write the override rspec */ - if (RSPEC_STF(wlc->bandstate[i]->rspec_override) - != PHY_TXC1_MODE_SISO) { - wlc->bandstate[i]->rspec_override = 0; - wiphy_err(wlc->wiphy, "%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; - wiphy_err(wlc->wiphy, "%s(): temp " - "sense override non-SISO " - "mrspec_override\n", - __func__); - } - } - } - - wlc->stf->txchain = txchain; - wlc->stf->txstreams = txstreams; - brcms_c_stf_stbc_tx_set(wlc, wlc->band->band_stf_stbc_tx); - brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]); - brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]); - wlc->stf->txant = - (wlc->stf->txstreams == 1) ? ANT_TX_FORCE_0 : ANT_TX_DEF; - _brcms_c_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++) - brcms_c_stf_txcore_set(wlc, (u8) i, txcore_default[i]); - - return 0; -} - -/* update wlc->stf->ss_opmode which represents the operational stf_ss mode we're using */ -int brcms_c_stf_ss_update(struct brcms_c_info *wlc, struct brcms_band *band) -{ - int ret_code = 0; - u8 prev_stf_ss; - u8 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 (BRCMS_STBC_CAP_PHY(wlc) && - wlc->stf->ss_algosel_auto - && (wlc->stf->ss_algo_channel != (u16) -1)) { - 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; - brcms_b_band_stf_ss_set(wlc->hw, upd_stf_ss); - } - - return ret_code; -} - -int brcms_c_stf_attach(struct brcms_c_info *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 (BRCMS_ISNPHY(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; - brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]); - brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]); - - brcms_c_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 (BRCMS_STBC_CAP_PHY(wlc)) { - wlc->stf->ss_algosel_auto = true; - wlc->stf->ss_algo_channel = (u16) -1; /* Init the default value */ - } - return 0; -} - -void brcms_c_stf_detach(struct brcms_c_info *wlc) -{ -} - -/* - * 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 _brcms_c_stf_phy_txant_upd(struct brcms_c_info *wlc) -{ - s8 txant; - - txant = (s8) wlc->stf->txant; - if (BRCMS_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 (BRCMS_ISNPHY(wlc->band) && - NREV_GE(wlc->band->phyrev, 3) - && NREV_LT(wlc->band->phyrev, 7)) { - wlc->stf->phytxant = PHY_TXC_ANT_2; - } - } else { - if (BRCMS_ISLCNPHY(wlc->band) || - BRCMS_ISSSLPNPHY(wlc->band)) - wlc->stf->phytxant = PHY_TXC_LCNPHY_ANT_LAST; - else { - /* catch out of sync wlc->stf->txcore */ - WARN_ON(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; - } - - brcms_b_txant_set(wlc->hw, wlc->stf->phytxant); -} - -void brcms_c_stf_phy_txant_upd(struct brcms_c_info *wlc) -{ - _brcms_c_stf_phy_txant_upd(wlc); -} - -void brcms_c_stf_phy_chain_calc(struct brcms_c_info *wlc) -{ - /* get available rx/tx chains */ - wlc->stf->hw_txchain = (u8) getintvar(wlc->pub->vars, "txchain"); - wlc->stf->hw_rxchain = (u8) 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 (BRCMS_ISNPHY(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 = (u8) BRCMS_BITSCNT(wlc->stf->hw_txchain); - - if (wlc->stf->hw_rxchain == 0 || wlc->stf->hw_rxchain == 0xf) { - if (BRCMS_ISNPHY(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 = (u8) BRCMS_BITSCNT(wlc->stf->hw_rxchain); - - /* initialize the txcore table */ - memcpy(wlc->stf->txcore, txcore_default, sizeof(wlc->stf->txcore)); - - /* default spatial_policy */ - wlc->stf->spatial_policy = MIN_SPATIAL_EXPANSION; - brcms_c_stf_spatial_policy_set(wlc, MIN_SPATIAL_EXPANSION); -} - -static u16 _brcms_c_stf_phytxchain_sel(struct brcms_c_info *wlc, - ratespec_t rspec) -{ - u16 phytxant = wlc->stf->phytxant; - - if (RSPEC_STF(rspec) != PHY_TXC1_MODE_SISO) { - 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; -} - -u16 brcms_c_stf_phytxchain_sel(struct brcms_c_info *wlc, ratespec_t rspec) -{ - return _brcms_c_stf_phytxchain_sel(wlc, rspec); -} - -u16 brcms_c_stf_d11hdrs_phyctl_txant(struct brcms_c_info *wlc, ratespec_t rspec) -{ - u16 phytxant = wlc->stf->phytxant; - u16 mask = PHY_TXC_ANT_MASK; - - /* for non-siso rates or default setting, use the available chains */ - if (BRCMS_ISNPHY(wlc->band)) { - phytxant = _brcms_c_stf_phytxchain_sel(wlc, rspec); - mask = PHY_TXC_HTANT_MASK; - } - phytxant |= phytxant & mask; - return phytxant; -} |