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Release 4.11 drivers/net/wireless/ath/carl9170/mac.c

/*
 * Atheros CARL9170 driver
 *
 * MAC programming
 *
 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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; see the file COPYING.  If not, see
 * http://www.gnu.org/licenses/.
 *
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *    Copyright (c) 2007-2008 Atheros Communications, Inc.
 *
 *    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 <asm/unaligned.h>

#include "carl9170.h"
#include "cmd.h"


int carl9170_set_dyn_sifs_ack(struct ar9170 *ar) { u32 val; if (conf_is_ht40(&ar->hw->conf)) val = 0x010a; else { if (ar->hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) val = 0x105; else val = 0x104; } return carl9170_write_reg(ar, AR9170_MAC_REG_DYNAMIC_SIFS_ACK, val); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter6394.03%133.33%
Karl Beldan34.48%133.33%
Johannes Berg11.49%133.33%
Total67100.00%3100.00%


int carl9170_set_rts_cts_rate(struct ar9170 *ar) { u32 rts_rate, cts_rate; if (conf_is_ht(&ar->hw->conf)) { /* 12 mbit OFDM */ rts_rate = 0x1da; cts_rate = 0x10a; } else { if (ar->hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) { /* 11 mbit CCK */ rts_rate = 033; cts_rate = 003; } else { /* 6 mbit OFDM */ rts_rate = 0x1bb; cts_rate = 0x10b; } } return carl9170_write_reg(ar, AR9170_MAC_REG_RTS_CTS_RATE, rts_rate | (cts_rate) << 16); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter9295.83%133.33%
Karl Beldan33.12%133.33%
Johannes Berg11.04%133.33%
Total96100.00%3100.00%


int carl9170_set_slot_time(struct ar9170 *ar) { struct ieee80211_vif *vif; u32 slottime = 20; rcu_read_lock(); vif = carl9170_get_main_vif(ar); if (!vif) { rcu_read_unlock(); return 0; } if ((ar->hw->conf.chandef.chan->band == NL80211_BAND_5GHZ) || vif->bss_conf.use_short_slot) slottime = 9; rcu_read_unlock(); return carl9170_write_reg(ar, AR9170_MAC_REG_SLOT_TIME, slottime << 10); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter8295.35%133.33%
Karl Beldan33.49%133.33%
Johannes Berg11.16%133.33%
Total86100.00%3100.00%


int carl9170_set_mac_rates(struct ar9170 *ar) { struct ieee80211_vif *vif; u32 basic, mandatory; rcu_read_lock(); vif = carl9170_get_main_vif(ar); if (!vif) { rcu_read_unlock(); return 0; } basic = (vif->bss_conf.basic_rates & 0xf); basic |= (vif->bss_conf.basic_rates & 0xff0) << 4; rcu_read_unlock(); if (ar->hw->conf.chandef.chan->band == NL80211_BAND_5GHZ) mandatory = 0xff00; /* OFDM 6/9/12/18/24/36/48/54 */ else mandatory = 0xff0f; /* OFDM (6/9../54) + CCK (1/2/5.5/11) */ carl9170_regwrite_begin(ar); carl9170_regwrite(AR9170_MAC_REG_BASIC_RATE, basic); carl9170_regwrite(AR9170_MAC_REG_MANDATORY_RATE, mandatory); carl9170_regwrite_finish(); return carl9170_regwrite_result(); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter12196.80%133.33%
Karl Beldan32.40%133.33%
Johannes Berg10.80%133.33%
Total125100.00%3100.00%


int carl9170_set_qos(struct ar9170 *ar) { carl9170_regwrite_begin(ar); carl9170_regwrite(AR9170_MAC_REG_AC0_CW, ar->edcf[0].cw_min | (ar->edcf[0].cw_max << 16)); carl9170_regwrite(AR9170_MAC_REG_AC1_CW, ar->edcf[1].cw_min | (ar->edcf[1].cw_max << 16)); carl9170_regwrite(AR9170_MAC_REG_AC2_CW, ar->edcf[2].cw_min | (ar->edcf[2].cw_max << 16)); carl9170_regwrite(AR9170_MAC_REG_AC3_CW, ar->edcf[3].cw_min | (ar->edcf[3].cw_max << 16)); carl9170_regwrite(AR9170_MAC_REG_AC4_CW, ar->edcf[4].cw_min | (ar->edcf[4].cw_max << 16)); carl9170_regwrite(AR9170_MAC_REG_AC2_AC1_AC0_AIFS, ((ar->edcf[0].aifs * 9 + 10)) | ((ar->edcf[1].aifs * 9 + 10) << 12) | ((ar->edcf[2].aifs * 9 + 10) << 24)); carl9170_regwrite(AR9170_MAC_REG_AC4_AC3_AC2_AIFS, ((ar->edcf[2].aifs * 9 + 10) >> 8) | ((ar->edcf[3].aifs * 9 + 10) << 4) | ((ar->edcf[4].aifs * 9 + 10) << 16)); carl9170_regwrite(AR9170_MAC_REG_AC1_AC0_TXOP, ar->edcf[0].txop | ar->edcf[1].txop << 16); carl9170_regwrite(AR9170_MAC_REG_AC3_AC2_TXOP, ar->edcf[2].txop | ar->edcf[3].txop << 16 | ar->edcf[4].txop << 24); carl9170_regwrite_finish(); return carl9170_regwrite_result(); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter340100.00%1100.00%
Total340100.00%1100.00%


int carl9170_init_mac(struct ar9170 *ar) { carl9170_regwrite_begin(ar); /* switch MAC to OTUS interface */ carl9170_regwrite(0x1c3600, 0x3); carl9170_regwrite(AR9170_MAC_REG_ACK_EXTENSION, 0x40); carl9170_regwrite(AR9170_MAC_REG_RETRY_MAX, 0x0); carl9170_regwrite(AR9170_MAC_REG_FRAMETYPE_FILTER, AR9170_MAC_FTF_MONITOR); /* enable MMIC */ carl9170_regwrite(AR9170_MAC_REG_SNIFFER, AR9170_MAC_SNIFFER_DEFAULTS); carl9170_regwrite(AR9170_MAC_REG_RX_THRESHOLD, 0xc1f80); carl9170_regwrite(AR9170_MAC_REG_RX_PE_DELAY, 0x70); carl9170_regwrite(AR9170_MAC_REG_EIFS_AND_SIFS, 0xa144000); carl9170_regwrite(AR9170_MAC_REG_SLOT_TIME, 9 << 10); /* CF-END & CF-ACK rate => 24M OFDM */ carl9170_regwrite(AR9170_MAC_REG_TID_CFACK_CFEND_RATE, 0x59900000); /* NAV protects ACK only (in TXOP) */ carl9170_regwrite(AR9170_MAC_REG_TXOP_DURATION, 0x201); /* Set Beacon PHY CTRL's TPC to 0x7, TA1=1 */ /* OTUS set AM to 0x1 */ carl9170_regwrite(AR9170_MAC_REG_BCN_HT1, 0x8000170); carl9170_regwrite(AR9170_MAC_REG_BACKOFF_PROTECT, 0x105); /* Aggregation MAX number and timeout */ carl9170_regwrite(AR9170_MAC_REG_AMPDU_FACTOR, 0x8000a); carl9170_regwrite(AR9170_MAC_REG_AMPDU_DENSITY, 0x140a07); carl9170_regwrite(AR9170_MAC_REG_FRAMETYPE_FILTER, AR9170_MAC_FTF_DEFAULTS); carl9170_regwrite(AR9170_MAC_REG_RX_CONTROL, AR9170_MAC_RX_CTRL_DEAGG | AR9170_MAC_RX_CTRL_SHORT_FILTER); /* rate sets */ carl9170_regwrite(AR9170_MAC_REG_BASIC_RATE, 0x150f); carl9170_regwrite(AR9170_MAC_REG_MANDATORY_RATE, 0x150f); carl9170_regwrite(AR9170_MAC_REG_RTS_CTS_RATE, 0x0030033); /* MIMO response control */ carl9170_regwrite(AR9170_MAC_REG_ACK_TPC, 0x4003c1e); carl9170_regwrite(AR9170_MAC_REG_AMPDU_RX_THRESH, 0xffff); /* set PHY register read timeout (??) */ carl9170_regwrite(AR9170_MAC_REG_MISC_680, 0xf00008); /* Disable Rx TimeOut, workaround for BB. */ carl9170_regwrite(AR9170_MAC_REG_RX_TIMEOUT, 0x0); /* Set WLAN DMA interrupt mode: generate int per packet */ carl9170_regwrite(AR9170_MAC_REG_TXRX_MPI, 0x110011); carl9170_regwrite(AR9170_MAC_REG_FCS_SELECT, AR9170_MAC_FCS_FIFO_PROT); /* Disables the CF_END frame, undocumented register */ carl9170_regwrite(AR9170_MAC_REG_TXOP_NOT_ENOUGH_IND, 0x141e0f48); /* reset group hash table */ carl9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_L, 0xffffffff); carl9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_H, 0xffffffff); /* disable PRETBTT interrupt */ carl9170_regwrite(AR9170_MAC_REG_PRETBTT, 0x0); carl9170_regwrite(AR9170_MAC_REG_BCN_PERIOD, 0x0); carl9170_regwrite_finish(); return carl9170_regwrite_result(); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter258100.00%2100.00%
Total258100.00%2100.00%


static int carl9170_set_mac_reg(struct ar9170 *ar, const u32 reg, const u8 *mac) { static const u8 zero[ETH_ALEN] = { 0 }; if (!mac) mac = zero; carl9170_regwrite_begin(ar); carl9170_regwrite(reg, get_unaligned_le32(mac)); carl9170_regwrite(reg + 4, get_unaligned_le16(mac + 4)); carl9170_regwrite_finish(); return carl9170_regwrite_result(); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter77100.00%1100.00%
Total77100.00%1100.00%


int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id, const u8 *mac) { if (WARN_ON(id >= ar->fw.vif_num)) return -EINVAL; return carl9170_set_mac_reg(ar, AR9170_MAC_REG_ACK_TABLE + (id - 1) * 8, mac); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter55100.00%1100.00%
Total55100.00%1100.00%


int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hash) { int err; carl9170_regwrite_begin(ar); carl9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_H, mc_hash >> 32); carl9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_L, mc_hash); carl9170_regwrite_finish(); err = carl9170_regwrite_result(); if (err) return err; ar->cur_mc_hash = mc_hash; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter62100.00%1100.00%
Total62100.00%1100.00%


int carl9170_set_operating_mode(struct ar9170 *ar) { struct ieee80211_vif *vif; struct ath_common *common = &ar->common; u8 *mac_addr, *bssid; u32 cam_mode = AR9170_MAC_CAM_DEFAULTS; u32 enc_mode = AR9170_MAC_ENCRYPTION_DEFAULTS | AR9170_MAC_ENCRYPTION_MGMT_RX_SOFTWARE; u32 rx_ctrl = AR9170_MAC_RX_CTRL_DEAGG | AR9170_MAC_RX_CTRL_SHORT_FILTER; u32 sniffer = AR9170_MAC_SNIFFER_DEFAULTS; int err = 0; rcu_read_lock(); vif = carl9170_get_main_vif(ar); if (vif) { mac_addr = common->macaddr; bssid = common->curbssid; switch (vif->type) { case NL80211_IFTYPE_ADHOC: cam_mode |= AR9170_MAC_CAM_IBSS; break; case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_AP: cam_mode |= AR9170_MAC_CAM_AP; /* iwlagn 802.11n STA Workaround */ rx_ctrl |= AR9170_MAC_RX_CTRL_PASS_TO_HOST; break; case NL80211_IFTYPE_WDS: cam_mode |= AR9170_MAC_CAM_AP_WDS; rx_ctrl |= AR9170_MAC_RX_CTRL_PASS_TO_HOST; break; case NL80211_IFTYPE_STATION: cam_mode |= AR9170_MAC_CAM_STA; rx_ctrl |= AR9170_MAC_RX_CTRL_PASS_TO_HOST; break; default: WARN(1, "Unsupported operation mode %x\n", vif->type); err = -EOPNOTSUPP; break; } } else { /* * Enable monitor mode * * rx_ctrl |= AR9170_MAC_RX_CTRL_ACK_IN_SNIFFER; * sniffer |= AR9170_MAC_SNIFFER_ENABLE_PROMISC; * * When the hardware is in SNIFFER_PROMISC mode, * it generates spurious ACKs for every incoming * frame. This confuses every peer in the * vicinity and the network throughput will suffer * badly. * * Hence, the hardware will be put into station * mode and just the rx filters are disabled. */ cam_mode |= AR9170_MAC_CAM_STA; rx_ctrl |= AR9170_MAC_RX_CTRL_PASS_TO_HOST; mac_addr = common->macaddr; bssid = NULL; } rcu_read_unlock(); if (err) return err; if (ar->rx_software_decryption) enc_mode |= AR9170_MAC_ENCRYPTION_RX_SOFTWARE; if (ar->sniffer_enabled) { enc_mode |= AR9170_MAC_ENCRYPTION_RX_SOFTWARE; } err = carl9170_set_mac_reg(ar, AR9170_MAC_REG_MAC_ADDR_L, mac_addr); if (err) return err; err = carl9170_set_mac_reg(ar, AR9170_MAC_REG_BSSID_L, bssid); if (err) return err; carl9170_regwrite_begin(ar); carl9170_regwrite(AR9170_MAC_REG_SNIFFER, sniffer); carl9170_regwrite(AR9170_MAC_REG_CAM_MODE, cam_mode); carl9170_regwrite(AR9170_MAC_REG_ENCRYPTION, enc_mode); carl9170_regwrite(AR9170_MAC_REG_RX_CONTROL, rx_ctrl); carl9170_regwrite_finish(); return carl9170_regwrite_result(); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter29098.98%375.00%
Javier Lopez31.02%125.00%
Total293100.00%4100.00%


int carl9170_set_hwretry_limit(struct ar9170 *ar, const unsigned int max_retry) { u32 tmp = min_t(u32, 0x33333, max_retry * 0x11111); return carl9170_write_reg(ar, AR9170_MAC_REG_RETRY_MAX, tmp); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter39100.00%1100.00%
Total39100.00%1100.00%


int carl9170_set_beacon_timers(struct ar9170 *ar) { struct ieee80211_vif *vif; u32 v = 0; u32 pretbtt = 0; rcu_read_lock(); vif = carl9170_get_main_vif(ar); if (vif) { struct carl9170_vif_info *mvif; mvif = (void *) vif->drv_priv; if (mvif->enable_beacon && !WARN_ON(!ar->beacon_enabled)) { ar->global_beacon_int = vif->bss_conf.beacon_int / ar->beacon_enabled; SET_VAL(AR9170_MAC_BCN_DTIM, v, vif->bss_conf.dtim_period); switch (vif->type) { case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_ADHOC: v |= AR9170_MAC_BCN_IBSS_MODE; break; case NL80211_IFTYPE_AP: v |= AR9170_MAC_BCN_AP_MODE; break; default: WARN_ON_ONCE(1); break; } } else if (vif->type == NL80211_IFTYPE_STATION) { ar->global_beacon_int = vif->bss_conf.beacon_int; SET_VAL(AR9170_MAC_BCN_DTIM, v, ar->hw->conf.ps_dtim_period); v |= AR9170_MAC_BCN_STA_PS | AR9170_MAC_BCN_PWR_MGT; } if (ar->global_beacon_int) { if (ar->global_beacon_int < 15) { rcu_read_unlock(); return -ERANGE; } ar->global_pretbtt = ar->global_beacon_int - CARL9170_PRETBTT_KUS; } else { ar->global_pretbtt = 0; } } else { ar->global_beacon_int = 0; ar->global_pretbtt = 0; } rcu_read_unlock(); SET_VAL(AR9170_MAC_BCN_PERIOD, v, ar->global_beacon_int); SET_VAL(AR9170_MAC_PRETBTT, pretbtt, ar->global_pretbtt); SET_VAL(AR9170_MAC_PRETBTT2, pretbtt, ar->global_pretbtt); carl9170_regwrite_begin(ar); carl9170_regwrite(AR9170_MAC_REG_PRETBTT, pretbtt); carl9170_regwrite(AR9170_MAC_REG_BCN_PERIOD, v); carl9170_regwrite_finish(); return carl9170_regwrite_result(); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter297100.00%1100.00%
Total297100.00%1100.00%


int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac, const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen) { struct carl9170_set_key_cmd key = { }; static const u8 bcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; mac = mac ? : bcast; key.user = cpu_to_le16(id); key.keyId = cpu_to_le16(keyidx); key.type = cpu_to_le16(ktype); memcpy(&key.macAddr, mac, ETH_ALEN); if (keydata) memcpy(&key.key, keydata, keylen); return carl9170_exec_cmd(ar, CARL9170_CMD_EKEY, sizeof(key), (u8 *)&key, 0, NULL); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter150100.00%1100.00%
Total150100.00%1100.00%


int carl9170_disable_key(struct ar9170 *ar, const u8 id) { struct carl9170_disable_key_cmd key = { }; key.user = cpu_to_le16(id); return carl9170_exec_cmd(ar, CARL9170_CMD_DKEY, sizeof(key), (u8 *)&key, 0, NULL); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter53100.00%1100.00%
Total53100.00%1100.00%


int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel) { unsigned int power, chains; if (ar->eeprom.tx_mask != 1) chains = AR9170_TX_PHY_TXCHAIN_2; else chains = AR9170_TX_PHY_TXCHAIN_1; switch (channel->band) { case NL80211_BAND_2GHZ: power = ar->power_2G_ofdm[0] & 0x3f; break; case NL80211_BAND_5GHZ: power = ar->power_5G_leg[0] & 0x3f; break; default: BUG_ON(1); } power = min_t(unsigned int, power, ar->hw->conf.power_level * 2); carl9170_regwrite_begin(ar); carl9170_regwrite(AR9170_MAC_REG_ACK_TPC, 0x3c1e | power << 20 | chains << 26); carl9170_regwrite(AR9170_MAC_REG_RTS_CTS_TPC, power << 5 | chains << 11 | power << 21 | chains << 27); carl9170_regwrite(AR9170_MAC_REG_CFEND_QOSNULL_TPC, power << 5 | chains << 11 | power << 21 | chains << 27); carl9170_regwrite_finish(); return carl9170_regwrite_result(); }

Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter16398.79%150.00%
Johannes Berg21.21%150.00%
Total165100.00%2100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Christian Lamparter215299.03%562.50%
Karl Beldan120.55%112.50%
Johannes Berg60.28%112.50%
Javier Lopez30.14%112.50%
Total2173100.00%8100.00%
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