diff options
Diffstat (limited to 'drivers/net/wireless/ath/ar9170/mac.c')
| -rw-r--r-- | drivers/net/wireless/ath/ar9170/mac.c | 519 |
1 files changed, 0 insertions, 519 deletions
diff --git a/drivers/net/wireless/ath/ar9170/mac.c b/drivers/net/wireless/ath/ar9170/mac.c deleted file mode 100644 index 857e8610429..00000000000 --- a/drivers/net/wireless/ath/ar9170/mac.c +++ /dev/null @@ -1,519 +0,0 @@ -/* - * Atheros AR9170 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 "ar9170.h" -#include "cmd.h" - -int ar9170_set_dyn_sifs_ack(struct ar9170 *ar) -{ - u32 val; - - if (conf_is_ht40(&ar->hw->conf)) - val = 0x010a; - else { - if (ar->hw->conf.channel->band == IEEE80211_BAND_2GHZ) - val = 0x105; - else - val = 0x104; - } - - return ar9170_write_reg(ar, AR9170_MAC_REG_DYNAMIC_SIFS_ACK, val); -} - -int ar9170_set_slot_time(struct ar9170 *ar) -{ - u32 slottime = 20; - - if (!ar->vif) - return 0; - - if ((ar->hw->conf.channel->band == IEEE80211_BAND_5GHZ) || - ar->vif->bss_conf.use_short_slot) - slottime = 9; - - return ar9170_write_reg(ar, AR9170_MAC_REG_SLOT_TIME, slottime << 10); -} - -int ar9170_set_basic_rates(struct ar9170 *ar) -{ - u8 cck, ofdm; - - if (!ar->vif) - return 0; - - ofdm = ar->vif->bss_conf.basic_rates >> 4; - - /* FIXME: is still necessary? */ - if (ar->hw->conf.channel->band == IEEE80211_BAND_5GHZ) - cck = 0; - else - cck = ar->vif->bss_conf.basic_rates & 0xf; - - return ar9170_write_reg(ar, AR9170_MAC_REG_BASIC_RATE, - ofdm << 8 | cck); -} - -int ar9170_set_qos(struct ar9170 *ar) -{ - ar9170_regwrite_begin(ar); - - ar9170_regwrite(AR9170_MAC_REG_AC0_CW, ar->edcf[0].cw_min | - (ar->edcf[0].cw_max << 16)); - ar9170_regwrite(AR9170_MAC_REG_AC1_CW, ar->edcf[1].cw_min | - (ar->edcf[1].cw_max << 16)); - ar9170_regwrite(AR9170_MAC_REG_AC2_CW, ar->edcf[2].cw_min | - (ar->edcf[2].cw_max << 16)); - ar9170_regwrite(AR9170_MAC_REG_AC3_CW, ar->edcf[3].cw_min | - (ar->edcf[3].cw_max << 16)); - ar9170_regwrite(AR9170_MAC_REG_AC4_CW, ar->edcf[4].cw_min | - (ar->edcf[4].cw_max << 16)); - - ar9170_regwrite(AR9170_MAC_REG_AC1_AC0_AIFS, - ((ar->edcf[0].aifs * 9 + 10)) | - ((ar->edcf[1].aifs * 9 + 10) << 12) | - ((ar->edcf[2].aifs * 9 + 10) << 24)); - ar9170_regwrite(AR9170_MAC_REG_AC3_AC2_AIFS, - ((ar->edcf[2].aifs * 9 + 10) >> 8) | - ((ar->edcf[3].aifs * 9 + 10) << 4) | - ((ar->edcf[4].aifs * 9 + 10) << 16)); - - ar9170_regwrite(AR9170_MAC_REG_AC1_AC0_TXOP, - ar->edcf[0].txop | ar->edcf[1].txop << 16); - ar9170_regwrite(AR9170_MAC_REG_AC3_AC2_TXOP, - ar->edcf[2].txop | ar->edcf[3].txop << 16); - - ar9170_regwrite_finish(); - - return ar9170_regwrite_result(); -} - -static int ar9170_set_ampdu_density(struct ar9170 *ar, u8 mpdudensity) -{ - u32 val; - - /* don't allow AMPDU density > 8us */ - if (mpdudensity > 6) - return -EINVAL; - - /* Watch out! Otus uses slightly different density values. */ - val = 0x140a00 | (mpdudensity ? (mpdudensity + 1) : 0); - - ar9170_regwrite_begin(ar); - ar9170_regwrite(AR9170_MAC_REG_AMPDU_DENSITY, val); - ar9170_regwrite_finish(); - - return ar9170_regwrite_result(); -} - -int ar9170_init_mac(struct ar9170 *ar) -{ - ar9170_regwrite_begin(ar); - - ar9170_regwrite(AR9170_MAC_REG_ACK_EXTENSION, 0x40); - - ar9170_regwrite(AR9170_MAC_REG_RETRY_MAX, 0); - - /* enable MMIC */ - ar9170_regwrite(AR9170_MAC_REG_SNIFFER, - AR9170_MAC_REG_SNIFFER_DEFAULTS); - - ar9170_regwrite(AR9170_MAC_REG_RX_THRESHOLD, 0xc1f80); - - ar9170_regwrite(AR9170_MAC_REG_RX_PE_DELAY, 0x70); - ar9170_regwrite(AR9170_MAC_REG_EIFS_AND_SIFS, 0xa144000); - ar9170_regwrite(AR9170_MAC_REG_SLOT_TIME, 9 << 10); - - /* CF-END mode */ - ar9170_regwrite(0x1c3b2c, 0x19000000); - - /* NAV protects ACK only (in TXOP) */ - ar9170_regwrite(0x1c3b38, 0x201); - - /* Set Beacon PHY CTRL's TPC to 0x7, TA1=1 */ - /* OTUS set AM to 0x1 */ - ar9170_regwrite(AR9170_MAC_REG_BCN_HT1, 0x8000170); - - ar9170_regwrite(AR9170_MAC_REG_BACKOFF_PROTECT, 0x105); - - /* AGG test code*/ - /* Aggregation MAX number and timeout */ - ar9170_regwrite(0x1c3b9c, 0x10000a); - - ar9170_regwrite(AR9170_MAC_REG_FRAMETYPE_FILTER, - AR9170_MAC_REG_FTF_DEFAULTS); - - /* Enable deaggregator, response in sniffer mode */ - ar9170_regwrite(0x1c3c40, 0x1 | 1<<30); - - /* rate sets */ - ar9170_regwrite(AR9170_MAC_REG_BASIC_RATE, 0x150f); - ar9170_regwrite(AR9170_MAC_REG_MANDATORY_RATE, 0x150f); - ar9170_regwrite(AR9170_MAC_REG_RTS_CTS_RATE, 0x10b01bb); - - /* MIMO response control */ - ar9170_regwrite(0x1c3694, 0x4003C1E);/* bit 26~28 otus-AM */ - - /* switch MAC to OTUS interface */ - ar9170_regwrite(0x1c3600, 0x3); - - ar9170_regwrite(AR9170_MAC_REG_AMPDU_RX_THRESH, 0xffff); - - /* set PHY register read timeout (??) */ - ar9170_regwrite(AR9170_MAC_REG_MISC_680, 0xf00008); - - /* Disable Rx TimeOut, workaround for BB. */ - ar9170_regwrite(AR9170_MAC_REG_RX_TIMEOUT, 0x0); - - /* Set CPU clock frequency to 88/80MHz */ - ar9170_regwrite(AR9170_PWR_REG_CLOCK_SEL, - AR9170_PWR_CLK_AHB_80_88MHZ | - AR9170_PWR_CLK_DAC_160_INV_DLY); - - /* Set WLAN DMA interrupt mode: generate int per packet */ - ar9170_regwrite(AR9170_MAC_REG_TXRX_MPI, 0x110011); - - ar9170_regwrite(AR9170_MAC_REG_FCS_SELECT, - AR9170_MAC_FCS_FIFO_PROT); - - /* Disables the CF_END frame, undocumented register */ - ar9170_regwrite(AR9170_MAC_REG_TXOP_NOT_ENOUGH_IND, - 0x141E0F48); - - ar9170_regwrite_finish(); - - return ar9170_regwrite_result(); -} - -static int ar9170_set_mac_reg(struct ar9170 *ar, const u32 reg, const u8 *mac) -{ - static const u8 zero[ETH_ALEN] = { 0 }; - - if (!mac) - mac = zero; - - ar9170_regwrite_begin(ar); - - ar9170_regwrite(reg, get_unaligned_le32(mac)); - ar9170_regwrite(reg + 4, get_unaligned_le16(mac + 4)); - - ar9170_regwrite_finish(); - - return ar9170_regwrite_result(); -} - -int ar9170_update_multicast(struct ar9170 *ar, const u64 mc_hash) -{ - int err; - - ar9170_regwrite_begin(ar); - ar9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_H, mc_hash >> 32); - ar9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_L, mc_hash); - ar9170_regwrite_finish(); - err = ar9170_regwrite_result(); - if (err) - return err; - - ar->cur_mc_hash = mc_hash; - return 0; -} - -int ar9170_update_frame_filter(struct ar9170 *ar, const u32 filter) -{ - int err; - - err = ar9170_write_reg(ar, AR9170_MAC_REG_FRAMETYPE_FILTER, filter); - if (err) - return err; - - ar->cur_filter = filter; - return 0; -} - -static int ar9170_set_promiscouous(struct ar9170 *ar) -{ - u32 encr_mode, sniffer; - int err; - - err = ar9170_read_reg(ar, AR9170_MAC_REG_SNIFFER, &sniffer); - if (err) - return err; - - err = ar9170_read_reg(ar, AR9170_MAC_REG_ENCRYPTION, &encr_mode); - if (err) - return err; - - if (ar->sniffer_enabled) { - sniffer |= AR9170_MAC_REG_SNIFFER_ENABLE_PROMISC; - - /* - * Rx decryption works in place. - * - * If we don't disable it, the hardware will render all - * encrypted frames which are encrypted with an unknown - * key useless. - */ - - encr_mode |= AR9170_MAC_REG_ENCRYPTION_RX_SOFTWARE; - ar->sniffer_enabled = true; - } else { - sniffer &= ~AR9170_MAC_REG_SNIFFER_ENABLE_PROMISC; - - if (ar->rx_software_decryption) - encr_mode |= AR9170_MAC_REG_ENCRYPTION_RX_SOFTWARE; - else - encr_mode &= ~AR9170_MAC_REG_ENCRYPTION_RX_SOFTWARE; - } - - ar9170_regwrite_begin(ar); - ar9170_regwrite(AR9170_MAC_REG_ENCRYPTION, encr_mode); - ar9170_regwrite(AR9170_MAC_REG_SNIFFER, sniffer); - ar9170_regwrite_finish(); - - return ar9170_regwrite_result(); -} - -int ar9170_set_operating_mode(struct ar9170 *ar) -{ - struct ath_common *common = &ar->common; - u32 pm_mode = AR9170_MAC_REG_POWERMGT_DEFAULTS; - u8 *mac_addr, *bssid; - int err; - - if (ar->vif) { - mac_addr = common->macaddr; - bssid = common->curbssid; - - switch (ar->vif->type) { - case NL80211_IFTYPE_MESH_POINT: - case NL80211_IFTYPE_ADHOC: - pm_mode |= AR9170_MAC_REG_POWERMGT_IBSS; - break; - case NL80211_IFTYPE_AP: - pm_mode |= AR9170_MAC_REG_POWERMGT_AP; - break; - case NL80211_IFTYPE_WDS: - pm_mode |= AR9170_MAC_REG_POWERMGT_AP_WDS; - break; - case NL80211_IFTYPE_MONITOR: - ar->sniffer_enabled = true; - ar->rx_software_decryption = true; - break; - default: - pm_mode |= AR9170_MAC_REG_POWERMGT_STA; - break; - } - } else { - mac_addr = NULL; - bssid = NULL; - } - - err = ar9170_set_mac_reg(ar, AR9170_MAC_REG_MAC_ADDR_L, mac_addr); - if (err) - return err; - - err = ar9170_set_mac_reg(ar, AR9170_MAC_REG_BSSID_L, bssid); - if (err) - return err; - - err = ar9170_set_promiscouous(ar); - if (err) - return err; - - /* set AMPDU density to 8us. */ - err = ar9170_set_ampdu_density(ar, 6); - if (err) - return err; - - ar9170_regwrite_begin(ar); - - ar9170_regwrite(AR9170_MAC_REG_POWERMANAGEMENT, pm_mode); - ar9170_regwrite_finish(); - - return ar9170_regwrite_result(); -} - -int ar9170_set_hwretry_limit(struct ar9170 *ar, unsigned int max_retry) -{ - u32 tmp = min_t(u32, 0x33333, max_retry * 0x11111); - - return ar9170_write_reg(ar, AR9170_MAC_REG_RETRY_MAX, tmp); -} - -int ar9170_set_beacon_timers(struct ar9170 *ar) -{ - u32 v = 0; - u32 pretbtt = 0; - - if (ar->vif) { - v |= ar->vif->bss_conf.beacon_int; - - if (ar->enable_beacon) { - switch (ar->vif->type) { - case NL80211_IFTYPE_MESH_POINT: - case NL80211_IFTYPE_ADHOC: - v |= BIT(25); - break; - case NL80211_IFTYPE_AP: - v |= BIT(24); - pretbtt = (ar->vif->bss_conf.beacon_int - 6) << - 16; - break; - default: - break; - } - } - - v |= ar->vif->bss_conf.dtim_period << 16; - } - - ar9170_regwrite_begin(ar); - ar9170_regwrite(AR9170_MAC_REG_PRETBTT, pretbtt); - ar9170_regwrite(AR9170_MAC_REG_BCN_PERIOD, v); - ar9170_regwrite_finish(); - return ar9170_regwrite_result(); -} - -int ar9170_update_beacon(struct ar9170 *ar) -{ - struct sk_buff *skb; - __le32 *data, *old = NULL; - u32 word; - int i; - - skb = ieee80211_beacon_get(ar->hw, ar->vif); - if (!skb) - return -ENOMEM; - - data = (__le32 *)skb->data; - if (ar->beacon) - old = (__le32 *)ar->beacon->data; - - ar9170_regwrite_begin(ar); - for (i = 0; i < DIV_ROUND_UP(skb->len, 4); i++) { - /* - * XXX: This accesses beyond skb data for up - * to the last 3 bytes!! - */ - - if (old && (data[i] == old[i])) - continue; - - word = le32_to_cpu(data[i]); - ar9170_regwrite(AR9170_BEACON_BUFFER_ADDRESS + 4 * i, word); - } - - /* XXX: use skb->cb info */ - if (ar->hw->conf.channel->band == IEEE80211_BAND_2GHZ) - ar9170_regwrite(AR9170_MAC_REG_BCN_PLCP, - ((skb->len + 4) << (3 + 16)) + 0x0400); - else - ar9170_regwrite(AR9170_MAC_REG_BCN_PLCP, - ((skb->len + 4) << 16) + 0x001b); - - ar9170_regwrite(AR9170_MAC_REG_BCN_LENGTH, skb->len + 4); - ar9170_regwrite(AR9170_MAC_REG_BCN_ADDR, AR9170_BEACON_BUFFER_ADDRESS); - ar9170_regwrite(AR9170_MAC_REG_BCN_CTRL, 1); - - ar9170_regwrite_finish(); - - dev_kfree_skb(ar->beacon); - ar->beacon = skb; - - return ar9170_regwrite_result(); -} - -void ar9170_new_beacon(struct work_struct *work) -{ - struct ar9170 *ar = container_of(work, struct ar9170, - beacon_work); - struct sk_buff *skb; - - if (unlikely(!IS_STARTED(ar))) - return ; - - mutex_lock(&ar->mutex); - - if (!ar->vif) - goto out; - - ar9170_update_beacon(ar); - - rcu_read_lock(); - while ((skb = ieee80211_get_buffered_bc(ar->hw, ar->vif))) - ar9170_op_tx(ar->hw, skb); - - rcu_read_unlock(); - - out: - mutex_unlock(&ar->mutex); -} - -int ar9170_upload_key(struct ar9170 *ar, u8 id, const u8 *mac, u8 ktype, - u8 keyidx, u8 *keydata, int keylen) -{ - __le32 vals[7]; - static const u8 bcast[ETH_ALEN] = - { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; - u8 dummy; - - mac = mac ? : bcast; - - vals[0] = cpu_to_le32((keyidx << 16) + id); - vals[1] = cpu_to_le32(mac[1] << 24 | mac[0] << 16 | ktype); - vals[2] = cpu_to_le32(mac[5] << 24 | mac[4] << 16 | - mac[3] << 8 | mac[2]); - memset(&vals[3], 0, 16); - if (keydata) - memcpy(&vals[3], keydata, keylen); - - return ar->exec_cmd(ar, AR9170_CMD_EKEY, - sizeof(vals), (u8 *)vals, - 1, &dummy); -} - -int ar9170_disable_key(struct ar9170 *ar, u8 id) -{ - __le32 val = cpu_to_le32(id); - u8 dummy; - - return ar->exec_cmd(ar, AR9170_CMD_EKEY, - sizeof(val), (u8 *)&val, - 1, &dummy); -} |