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Release 4.11 drivers/net/wireless/ath/ath9k/tx99.c

/*
 * Copyright (c) 2013 Qualcomm Atheros, 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 "ath9k.h"


static void ath9k_tx99_stop(struct ath_softc *sc) { struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); ath_drain_all_txq(sc); ath_startrecv(sc); ath9k_hw_set_interrupts(ah); ath9k_hw_enable_interrupts(ah); ieee80211_wake_queues(sc->hw); kfree_skb(sc->tx99_skb); sc->tx99_skb = NULL; sc->tx99_state = false; ath9k_hw_tx99_stop(sc->sc_ah); ath_dbg(common, XMIT, "TX99 stopped\n"); }

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Sujith Manoharan92100.00%1100.00%
Total92100.00%1100.00%


static struct sk_buff *ath9k_build_tx99_skb(struct ath_softc *sc) { static u8 PN9Data[] = {0xff, 0x87, 0xb8, 0x59, 0xb7, 0xa1, 0xcc, 0x24, 0x57, 0x5e, 0x4b, 0x9c, 0x0e, 0xe9, 0xea, 0x50, 0x2a, 0xbe, 0xb4, 0x1b, 0xb6, 0xb0, 0x5d, 0xf1, 0xe6, 0x9a, 0xe3, 0x45, 0xfd, 0x2c, 0x53, 0x18, 0x0c, 0xca, 0xc9, 0xfb, 0x49, 0x37, 0xe5, 0xa8, 0x51, 0x3b, 0x2f, 0x61, 0xaa, 0x72, 0x18, 0x84, 0x02, 0x23, 0x23, 0xab, 0x63, 0x89, 0x51, 0xb3, 0xe7, 0x8b, 0x72, 0x90, 0x4c, 0xe8, 0xfb, 0xc0}; u32 len = 1200; struct ieee80211_tx_rate *rate; struct ieee80211_hw *hw = sc->hw; struct ath_hw *ah = sc->sc_ah; struct ieee80211_hdr *hdr; struct ieee80211_tx_info *tx_info; struct sk_buff *skb; struct ath_vif *avp; if (!sc->tx99_vif) return NULL; avp = (struct ath_vif *)sc->tx99_vif->drv_priv; skb = alloc_skb(len, GFP_KERNEL); if (!skb) return NULL; skb_put(skb, len); memset(skb->data, 0, len); hdr = (struct ieee80211_hdr *)skb->data; hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA); hdr->duration_id = 0; memcpy(hdr->addr1, hw->wiphy->perm_addr, ETH_ALEN); memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN); memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN); hdr->seq_ctrl |= cpu_to_le16(avp->seq_no); tx_info = IEEE80211_SKB_CB(skb); memset(tx_info, 0, sizeof(*tx_info)); rate = &tx_info->control.rates[0]; tx_info->band = sc->cur_chan->chandef.chan->band; tx_info->flags = IEEE80211_TX_CTL_NO_ACK; tx_info->control.vif = sc->tx99_vif; rate->count = 1; if (ah->curchan && IS_CHAN_HT(ah->curchan)) { rate->flags |= IEEE80211_TX_RC_MCS; if (IS_CHAN_HT40(ah->curchan)) rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; } memcpy(skb->data + sizeof(*hdr), PN9Data, sizeof(PN9Data)); return skb; }

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PersonTokensPropCommitsCommitProp
Sujith Manoharan39284.67%240.00%
Lorenzo Bianconi6814.69%240.00%
Felix Fietkau30.65%120.00%
Total463100.00%5100.00%


static void ath9k_tx99_deinit(struct ath_softc *sc) { ath_reset(sc, NULL); ath9k_ps_wakeup(sc); ath9k_tx99_stop(sc); ath9k_ps_restore(sc); }

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Sujith Manoharan33100.00%2100.00%
Total33100.00%2100.00%


static int ath9k_tx99_init(struct ath_softc *sc) { struct ieee80211_hw *hw = sc->hw; struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); struct ath_tx_control txctl; int r; if (test_bit(ATH_OP_INVALID, &common->op_flags)) { ath_err(common, "driver is in invalid state unable to use TX99"); return -EINVAL; } sc->tx99_skb = ath9k_build_tx99_skb(sc); if (!sc->tx99_skb) return -ENOMEM; memset(&txctl, 0, sizeof(txctl)); txctl.txq = sc->tx.txq_map[IEEE80211_AC_VO]; ath_reset(sc, NULL); ath9k_ps_wakeup(sc); ath9k_hw_disable_interrupts(ah); ath_drain_all_txq(sc); ath_stoprecv(sc); sc->tx99_state = true; ieee80211_stop_queues(hw); if (sc->tx99_power == MAX_RATE_POWER + 1) sc->tx99_power = MAX_RATE_POWER; ath9k_hw_tx99_set_txpower(ah, sc->tx99_power); r = ath9k_tx99_send(sc, sc->tx99_skb, &txctl); if (r) { ath_dbg(common, XMIT, "Failed to xmit TX99 skb\n"); return r; } ath_dbg(common, XMIT, "TX99 xmit started using %d ( %ddBm)\n", sc->tx99_power, sc->tx99_power / 2); /* We leave the harware awake as it will be chugging on */ return 0; }

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PersonTokensPropCommitsCommitProp
Sujith Manoharan22796.60%250.00%
Dan Carpenter52.13%125.00%
Oleksij Rempel31.28%125.00%
Total235100.00%4100.00%


static ssize_t read_file_tx99(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ath_softc *sc = file->private_data; char buf[3]; unsigned int len; len = sprintf(buf, "%d\n", sc->tx99_state); return simple_read_from_buffer(user_buf, count, ppos, buf, len); }

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PersonTokensPropCommitsCommitProp
Sujith Manoharan69100.00%1100.00%
Total69100.00%1100.00%


static ssize_t write_file_tx99(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct ath_softc *sc = file->private_data; struct ath_common *common = ath9k_hw_common(sc->sc_ah); char buf[32]; bool start; ssize_t len; int r; if (sc->cur_chan->nvifs > 1) return -EOPNOTSUPP; len = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, len)) return -EFAULT; if (strtobool(buf, &start)) return -EINVAL; if (start == sc->tx99_state) { if (!start) return count; ath_dbg(common, XMIT, "Resetting TX99\n"); ath9k_tx99_deinit(sc); } if (!start) { ath9k_tx99_deinit(sc); return count; } r = ath9k_tx99_init(sc); if (r) return r; return count; }

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Sujith Manoharan181100.00%2100.00%
Total181100.00%2100.00%

static const struct file_operations fops_tx99 = { .read = read_file_tx99, .write = write_file_tx99, .open = simple_open, .owner = THIS_MODULE, .llseek = default_llseek, };
static ssize_t read_file_tx99_power(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ath_softc *sc = file->private_data; char buf[32]; unsigned int len; len = sprintf(buf, "%d (%d dBm)\n", sc->tx99_power, sc->tx99_power / 2); return simple_read_from_buffer(user_buf, count, ppos, buf, len); }

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PersonTokensPropCommitsCommitProp
Sujith Manoharan75100.00%1100.00%
Total75100.00%1100.00%


static ssize_t write_file_tx99_power(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct ath_softc *sc = file->private_data; int r; u8 tx_power; r = kstrtou8_from_user(user_buf, count, 0, &tx_power); if (r) return r; if (tx_power > MAX_RATE_POWER) return -EINVAL; sc->tx99_power = tx_power; ath9k_ps_wakeup(sc); ath9k_hw_tx99_set_txpower(sc->sc_ah, sc->tx99_power); ath9k_ps_restore(sc); return count; }

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PersonTokensPropCommitsCommitProp
Sujith Manoharan100100.00%1100.00%
Total100100.00%1100.00%

static const struct file_operations fops_tx99_power = { .read = read_file_tx99_power, .write = write_file_tx99_power, .open = simple_open, .owner = THIS_MODULE, .llseek = default_llseek, };
void ath9k_tx99_init_debug(struct ath_softc *sc) { if (!AR_SREV_9280_20_OR_LATER(sc->sc_ah)) return; debugfs_create_file("tx99", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_tx99); debugfs_create_file("tx99_power", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_tx99_power); }

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PersonTokensPropCommitsCommitProp
Sujith Manoharan6098.36%150.00%
Eduardo Abinader11.64%150.00%
Total61100.00%2100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Sujith Manoharan129994.20%440.00%
Lorenzo Bianconi684.93%220.00%
Dan Carpenter50.36%110.00%
Felix Fietkau30.22%110.00%
Oleksij Rempel30.22%110.00%
Eduardo Abinader10.07%110.00%
Total1379100.00%10100.00%
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