280 lines
6.7 KiB
C
280 lines
6.7 KiB
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");
|
|
}
|
|
|
|
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;
|
|
|
|
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);
|
|
|
|
if (sc->tx99_vif) {
|
|
avp = (struct ath_vif *) sc->tx99_vif->drv_priv;
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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 hardware awake as it will be chugging on */
|
|
|
|
return 0;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
bool start;
|
|
ssize_t ret;
|
|
int r;
|
|
|
|
if (count < 1)
|
|
return -EINVAL;
|
|
|
|
if (sc->cur_chan->nvifs > 1)
|
|
return -EOPNOTSUPP;
|
|
|
|
ret = kstrtobool_from_user(user_buf, count, &start);
|
|
if (ret)
|
|
return ret;
|
|
|
|
mutex_lock(&sc->mutex);
|
|
|
|
if (start == sc->tx99_state) {
|
|
if (!start)
|
|
goto out;
|
|
ath_dbg(common, XMIT, "Resetting TX99\n");
|
|
ath9k_tx99_deinit(sc);
|
|
}
|
|
|
|
if (!start) {
|
|
ath9k_tx99_deinit(sc);
|
|
goto out;
|
|
}
|
|
|
|
r = ath9k_tx99_init(sc);
|
|
if (r) {
|
|
mutex_unlock(&sc->mutex);
|
|
return r;
|
|
}
|
|
out:
|
|
mutex_unlock(&sc->mutex);
|
|
return count;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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", 0600,
|
|
sc->debug.debugfs_phy, sc,
|
|
&fops_tx99);
|
|
debugfs_create_file("tx99_power", 0600,
|
|
sc->debug.debugfs_phy, sc,
|
|
&fops_tx99_power);
|
|
}
|