blob: 94d1089f40220e3f463738579705ca7abce8b59c [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/* Copyright(c) 2018-2019 Realtek Corporation
*/
#include "main.h"
#include "tx.h"
#include "fw.h"
#include "ps.h"
#include "debug.h"
static
void rtw_tx_stats(struct rtw_dev *rtwdev, struct ieee80211_vif *vif,
struct sk_buff *skb)
{
struct ieee80211_hdr *hdr;
struct rtw_vif *rtwvif;
hdr = (struct ieee80211_hdr *)skb->data;
if (!ieee80211_is_data(hdr->frame_control))
return;
if (!is_broadcast_ether_addr(hdr->addr1) &&
!is_multicast_ether_addr(hdr->addr1)) {
rtwdev->stats.tx_unicast += skb->len;
rtwdev->stats.tx_cnt++;
if (vif) {
rtwvif = (struct rtw_vif *)vif->drv_priv;
rtwvif->stats.tx_unicast += skb->len;
rtwvif->stats.tx_cnt++;
}
}
}
void rtw_tx_fill_tx_desc(struct rtw_tx_pkt_info *pkt_info, struct sk_buff *skb)
{
__le32 *txdesc = (__le32 *)skb->data;
SET_TX_DESC_TXPKTSIZE(txdesc, pkt_info->tx_pkt_size);
SET_TX_DESC_OFFSET(txdesc, pkt_info->offset);
SET_TX_DESC_PKT_OFFSET(txdesc, pkt_info->pkt_offset);
SET_TX_DESC_QSEL(txdesc, pkt_info->qsel);
SET_TX_DESC_BMC(txdesc, pkt_info->bmc);
SET_TX_DESC_RATE_ID(txdesc, pkt_info->rate_id);
SET_TX_DESC_DATARATE(txdesc, pkt_info->rate);
SET_TX_DESC_DISDATAFB(txdesc, pkt_info->dis_rate_fallback);
SET_TX_DESC_USE_RATE(txdesc, pkt_info->use_rate);
SET_TX_DESC_SEC_TYPE(txdesc, pkt_info->sec_type);
SET_TX_DESC_DATA_BW(txdesc, pkt_info->bw);
SET_TX_DESC_SW_SEQ(txdesc, pkt_info->seq);
SET_TX_DESC_MAX_AGG_NUM(txdesc, pkt_info->ampdu_factor);
SET_TX_DESC_AMPDU_DENSITY(txdesc, pkt_info->ampdu_density);
SET_TX_DESC_DATA_STBC(txdesc, pkt_info->stbc);
SET_TX_DESC_DATA_LDPC(txdesc, pkt_info->ldpc);
SET_TX_DESC_AGG_EN(txdesc, pkt_info->ampdu_en);
SET_TX_DESC_LS(txdesc, pkt_info->ls);
SET_TX_DESC_DATA_SHORT(txdesc, pkt_info->short_gi);
SET_TX_DESC_SPE_RPT(txdesc, pkt_info->report);
SET_TX_DESC_SW_DEFINE(txdesc, pkt_info->sn);
SET_TX_DESC_USE_RTS(txdesc, pkt_info->rts);
if (pkt_info->rts) {
SET_TX_DESC_RTSRATE(txdesc, DESC_RATE24M);
SET_TX_DESC_DATA_RTS_SHORT(txdesc, 1);
}
SET_TX_DESC_DISQSELSEQ(txdesc, pkt_info->dis_qselseq);
SET_TX_DESC_EN_HWSEQ(txdesc, pkt_info->en_hwseq);
SET_TX_DESC_HW_SSN_SEL(txdesc, pkt_info->hw_ssn_sel);
SET_TX_DESC_NAVUSEHDR(txdesc, pkt_info->nav_use_hdr);
SET_TX_DESC_BT_NULL(txdesc, pkt_info->bt_null);
}
EXPORT_SYMBOL(rtw_tx_fill_tx_desc);
static u8 get_tx_ampdu_factor(struct ieee80211_sta *sta)
{
u8 exp = sta->ht_cap.ampdu_factor;
/* the least ampdu factor is 8K, and the value in the tx desc is the
* max aggregation num, which represents val * 2 packets can be
* aggregated in an AMPDU, so here we should use 8/2=4 as the base
*/
return (BIT(2) << exp) - 1;
}
static u8 get_tx_ampdu_density(struct ieee80211_sta *sta)
{
return sta->ht_cap.ampdu_density;
}
static u8 get_highest_ht_tx_rate(struct rtw_dev *rtwdev,
struct ieee80211_sta *sta)
{
u8 rate;
if (rtwdev->hal.rf_type == RF_2T2R && sta->ht_cap.mcs.rx_mask[1] != 0)
rate = DESC_RATEMCS15;
else
rate = DESC_RATEMCS7;
return rate;
}
static u8 get_highest_vht_tx_rate(struct rtw_dev *rtwdev,
struct ieee80211_sta *sta)
{
struct rtw_efuse *efuse = &rtwdev->efuse;
u8 rate;
u16 tx_mcs_map;
tx_mcs_map = le16_to_cpu(sta->vht_cap.vht_mcs.tx_mcs_map);
if (efuse->hw_cap.nss == 1) {
switch (tx_mcs_map & 0x3) {
case IEEE80211_VHT_MCS_SUPPORT_0_7:
rate = DESC_RATEVHT1SS_MCS7;
break;
case IEEE80211_VHT_MCS_SUPPORT_0_8:
rate = DESC_RATEVHT1SS_MCS8;
break;
default:
case IEEE80211_VHT_MCS_SUPPORT_0_9:
rate = DESC_RATEVHT1SS_MCS9;
break;
}
} else if (efuse->hw_cap.nss >= 2) {
switch ((tx_mcs_map & 0xc) >> 2) {
case IEEE80211_VHT_MCS_SUPPORT_0_7:
rate = DESC_RATEVHT2SS_MCS7;
break;
case IEEE80211_VHT_MCS_SUPPORT_0_8:
rate = DESC_RATEVHT2SS_MCS8;
break;
default:
case IEEE80211_VHT_MCS_SUPPORT_0_9:
rate = DESC_RATEVHT2SS_MCS9;
break;
}
} else {
rate = DESC_RATEVHT1SS_MCS9;
}
return rate;
}
static void rtw_tx_report_enable(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info)
{
struct rtw_tx_report *tx_report = &rtwdev->tx_report;
/* [11:8], reserved, fills with zero
* [7:2], tx report sequence number
* [1:0], firmware use, fills with zero
*/
pkt_info->sn = (atomic_inc_return(&tx_report->sn) << 2) & 0xfc;
pkt_info->report = true;
}
void rtw_tx_report_purge_timer(struct timer_list *t)
{
struct rtw_dev *rtwdev = from_timer(rtwdev, t, tx_report.purge_timer);
struct rtw_tx_report *tx_report = &rtwdev->tx_report;
unsigned long flags;
if (skb_queue_len(&tx_report->queue) == 0)
return;
rtw_warn(rtwdev, "failed to get tx report from firmware\n");
spin_lock_irqsave(&tx_report->q_lock, flags);
skb_queue_purge(&tx_report->queue);
spin_unlock_irqrestore(&tx_report->q_lock, flags);
}
void rtw_tx_report_enqueue(struct rtw_dev *rtwdev, struct sk_buff *skb, u8 sn)
{
struct rtw_tx_report *tx_report = &rtwdev->tx_report;
unsigned long flags;
u8 *drv_data;
/* pass sn to tx report handler through driver data */
drv_data = (u8 *)IEEE80211_SKB_CB(skb)->status.status_driver_data;
*drv_data = sn;
spin_lock_irqsave(&tx_report->q_lock, flags);
__skb_queue_tail(&tx_report->queue, skb);
spin_unlock_irqrestore(&tx_report->q_lock, flags);
mod_timer(&tx_report->purge_timer, jiffies + RTW_TX_PROBE_TIMEOUT);
}
EXPORT_SYMBOL(rtw_tx_report_enqueue);
static void rtw_tx_report_tx_status(struct rtw_dev *rtwdev,
struct sk_buff *skb, bool acked)
{
struct ieee80211_tx_info *info;
info = IEEE80211_SKB_CB(skb);
ieee80211_tx_info_clear_status(info);
if (acked)
info->flags |= IEEE80211_TX_STAT_ACK;
else
info->flags &= ~IEEE80211_TX_STAT_ACK;
ieee80211_tx_status_irqsafe(rtwdev->hw, skb);
}
void rtw_tx_report_handle(struct rtw_dev *rtwdev, struct sk_buff *skb, int src)
{
struct rtw_tx_report *tx_report = &rtwdev->tx_report;
struct rtw_c2h_cmd *c2h;
struct sk_buff *cur, *tmp;
unsigned long flags;
u8 sn, st;
u8 *n;
c2h = get_c2h_from_skb(skb);
if (src == C2H_CCX_TX_RPT) {
sn = GET_CCX_REPORT_SEQNUM_V0(c2h->payload);
st = GET_CCX_REPORT_STATUS_V0(c2h->payload);
} else {
sn = GET_CCX_REPORT_SEQNUM_V1(c2h->payload);
st = GET_CCX_REPORT_STATUS_V1(c2h->payload);
}
spin_lock_irqsave(&tx_report->q_lock, flags);
skb_queue_walk_safe(&tx_report->queue, cur, tmp) {
n = (u8 *)IEEE80211_SKB_CB(cur)->status.status_driver_data;
if (*n == sn) {
__skb_unlink(cur, &tx_report->queue);
rtw_tx_report_tx_status(rtwdev, cur, st == 0);
break;
}
}
spin_unlock_irqrestore(&tx_report->q_lock, flags);
}
static u8 rtw_get_mgmt_rate(struct rtw_dev *rtwdev, struct sk_buff *skb,
u8 lowest_rate, bool ignore_rate)
{
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ieee80211_vif *vif = tx_info->control.vif;
bool force_lowest = test_bit(RTW_FLAG_FORCE_LOWEST_RATE, rtwdev->flags);
if (!vif || !vif->bss_conf.basic_rates || ignore_rate || force_lowest)
return lowest_rate;
return __ffs(vif->bss_conf.basic_rates) + lowest_rate;
}
static void rtw_tx_pkt_info_update_rate(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info,
struct sk_buff *skb,
bool ignore_rate)
{
if (rtwdev->hal.current_band_type == RTW_BAND_2G) {
pkt_info->rate_id = RTW_RATEID_B_20M;
pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE1M,
ignore_rate);
} else {
pkt_info->rate_id = RTW_RATEID_G;
pkt_info->rate = rtw_get_mgmt_rate(rtwdev, skb, DESC_RATE6M,
ignore_rate);
}
pkt_info->use_rate = true;
pkt_info->dis_rate_fallback = true;
}
static void rtw_tx_pkt_info_update_sec(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info,
struct sk_buff *skb)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
u8 sec_type = 0;
if (info && info->control.hw_key) {
struct ieee80211_key_conf *key = info->control.hw_key;
switch (key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
case WLAN_CIPHER_SUITE_TKIP:
sec_type = 0x01;
break;
case WLAN_CIPHER_SUITE_CCMP:
sec_type = 0x03;
break;
default:
break;
}
}
pkt_info->sec_type = sec_type;
}
static void rtw_tx_mgmt_pkt_info_update(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info,
struct ieee80211_sta *sta,
struct sk_buff *skb)
{
rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, false);
pkt_info->dis_qselseq = true;
pkt_info->en_hwseq = true;
pkt_info->hw_ssn_sel = 0;
/* TODO: need to change hw port and hw ssn sel for multiple vifs */
}
static void rtw_tx_data_pkt_info_update(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info,
struct ieee80211_sta *sta,
struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hw *hw = rtwdev->hw;
struct rtw_dm_info *dm_info = &rtwdev->dm_info;
struct rtw_sta_info *si;
u8 fix_rate;
u16 seq;
u8 ampdu_factor = 0;
u8 ampdu_density = 0;
bool ampdu_en = false;
u8 rate = DESC_RATE6M;
u8 rate_id = 6;
u8 bw = RTW_CHANNEL_WIDTH_20;
bool stbc = false;
bool ldpc = false;
seq = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
/* for broadcast/multicast, use default values */
if (!sta)
goto out;
if (info->flags & IEEE80211_TX_CTL_AMPDU) {
ampdu_en = true;
ampdu_factor = get_tx_ampdu_factor(sta);
ampdu_density = get_tx_ampdu_density(sta);
}
if (info->control.use_rts || skb->len > hw->wiphy->rts_threshold)
pkt_info->rts = true;
if (sta->vht_cap.vht_supported)
rate = get_highest_vht_tx_rate(rtwdev, sta);
else if (sta->ht_cap.ht_supported)
rate = get_highest_ht_tx_rate(rtwdev, sta);
else if (sta->supp_rates[0] <= 0xf)
rate = DESC_RATE11M;
else
rate = DESC_RATE54M;
si = (struct rtw_sta_info *)sta->drv_priv;
bw = si->bw_mode;
rate_id = si->rate_id;
stbc = rtwdev->hal.txrx_1ss ? false : si->stbc_en;
ldpc = si->ldpc_en;
out:
pkt_info->seq = seq;
pkt_info->ampdu_factor = ampdu_factor;
pkt_info->ampdu_density = ampdu_density;
pkt_info->ampdu_en = ampdu_en;
pkt_info->rate = rate;
pkt_info->rate_id = rate_id;
pkt_info->bw = bw;
pkt_info->stbc = stbc;
pkt_info->ldpc = ldpc;
fix_rate = dm_info->fix_rate;
if (fix_rate < DESC_RATE_MAX) {
pkt_info->rate = fix_rate;
pkt_info->dis_rate_fallback = true;
pkt_info->use_rate = true;
}
}
void rtw_tx_pkt_info_update(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info,
struct ieee80211_sta *sta,
struct sk_buff *skb)
{
struct rtw_chip_info *chip = rtwdev->chip;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct rtw_sta_info *si;
struct ieee80211_vif *vif = NULL;
__le16 fc = hdr->frame_control;
bool bmc;
if (sta) {
si = (struct rtw_sta_info *)sta->drv_priv;
vif = si->vif;
}
if (ieee80211_is_mgmt(fc) || ieee80211_is_nullfunc(fc))
rtw_tx_mgmt_pkt_info_update(rtwdev, pkt_info, sta, skb);
else if (ieee80211_is_data(fc))
rtw_tx_data_pkt_info_update(rtwdev, pkt_info, sta, skb);
bmc = is_broadcast_ether_addr(hdr->addr1) ||
is_multicast_ether_addr(hdr->addr1);
if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
rtw_tx_report_enable(rtwdev, pkt_info);
pkt_info->bmc = bmc;
rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb);
pkt_info->tx_pkt_size = skb->len;
pkt_info->offset = chip->tx_pkt_desc_sz;
pkt_info->qsel = skb->priority;
pkt_info->ls = true;
/* maybe merge with tx status ? */
rtw_tx_stats(rtwdev, vif, skb);
}
void rtw_tx_rsvd_page_pkt_info_update(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info,
struct sk_buff *skb,
enum rtw_rsvd_packet_type type)
{
struct rtw_chip_info *chip = rtwdev->chip;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
bool bmc;
/* A beacon or dummy reserved page packet indicates that it is the first
* reserved page, and the qsel of it will be set in each hci.
*/
if (type != RSVD_BEACON && type != RSVD_DUMMY)
pkt_info->qsel = TX_DESC_QSEL_MGMT;
rtw_tx_pkt_info_update_rate(rtwdev, pkt_info, skb, true);
bmc = is_broadcast_ether_addr(hdr->addr1) ||
is_multicast_ether_addr(hdr->addr1);
pkt_info->bmc = bmc;
pkt_info->tx_pkt_size = skb->len;
pkt_info->offset = chip->tx_pkt_desc_sz;
pkt_info->ls = true;
if (type == RSVD_PS_POLL) {
pkt_info->nav_use_hdr = true;
} else {
pkt_info->dis_qselseq = true;
pkt_info->en_hwseq = true;
pkt_info->hw_ssn_sel = 0;
}
if (type == RSVD_QOS_NULL)
pkt_info->bt_null = true;
rtw_tx_pkt_info_update_sec(rtwdev, pkt_info, skb);
/* TODO: need to change hw port and hw ssn sel for multiple vifs */
}
struct sk_buff *
rtw_tx_write_data_rsvd_page_get(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info,
u8 *buf, u32 size)
{
struct rtw_chip_info *chip = rtwdev->chip;
struct sk_buff *skb;
u32 tx_pkt_desc_sz;
u32 length;
tx_pkt_desc_sz = chip->tx_pkt_desc_sz;
length = size + tx_pkt_desc_sz;
skb = dev_alloc_skb(length);
if (!skb) {
rtw_err(rtwdev, "failed to alloc write data rsvd page skb\n");
return NULL;
}
skb_reserve(skb, tx_pkt_desc_sz);
skb_put_data(skb, buf, size);
rtw_tx_rsvd_page_pkt_info_update(rtwdev, pkt_info, skb, RSVD_BEACON);
return skb;
}
EXPORT_SYMBOL(rtw_tx_write_data_rsvd_page_get);
struct sk_buff *
rtw_tx_write_data_h2c_get(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info,
u8 *buf, u32 size)
{
struct rtw_chip_info *chip = rtwdev->chip;
struct sk_buff *skb;
u32 tx_pkt_desc_sz;
u32 length;
tx_pkt_desc_sz = chip->tx_pkt_desc_sz;
length = size + tx_pkt_desc_sz;
skb = dev_alloc_skb(length);
if (!skb) {
rtw_err(rtwdev, "failed to alloc write data h2c skb\n");
return NULL;
}
skb_reserve(skb, tx_pkt_desc_sz);
skb_put_data(skb, buf, size);
pkt_info->tx_pkt_size = size;
return skb;
}
EXPORT_SYMBOL(rtw_tx_write_data_h2c_get);
void rtw_tx(struct rtw_dev *rtwdev,
struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
struct rtw_tx_pkt_info pkt_info = {0};
int ret;
rtw_tx_pkt_info_update(rtwdev, &pkt_info, control->sta, skb);
ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb);
if (ret) {
rtw_err(rtwdev, "failed to write TX skb to HCI\n");
goto out;
}
rtw_hci_tx_kick_off(rtwdev);
return;
out:
ieee80211_free_txskb(rtwdev->hw, skb);
}
static void rtw_txq_check_agg(struct rtw_dev *rtwdev,
struct rtw_txq *rtwtxq,
struct sk_buff *skb)
{
struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq);
struct ieee80211_tx_info *info;
struct rtw_sta_info *si;
if (test_bit(RTW_TXQ_AMPDU, &rtwtxq->flags)) {
info = IEEE80211_SKB_CB(skb);
info->flags |= IEEE80211_TX_CTL_AMPDU;
return;
}
if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
return;
if (test_bit(RTW_TXQ_BLOCK_BA, &rtwtxq->flags))
return;
if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE)))
return;
if (!txq->sta)
return;
si = (struct rtw_sta_info *)txq->sta->drv_priv;
set_bit(txq->tid, si->tid_ba);
ieee80211_queue_work(rtwdev->hw, &rtwdev->ba_work);
}
static int rtw_txq_push_skb(struct rtw_dev *rtwdev,
struct rtw_txq *rtwtxq,
struct sk_buff *skb)
{
struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq);
struct rtw_tx_pkt_info pkt_info = {0};
int ret;
rtw_txq_check_agg(rtwdev, rtwtxq, skb);
rtw_tx_pkt_info_update(rtwdev, &pkt_info, txq->sta, skb);
ret = rtw_hci_tx_write(rtwdev, &pkt_info, skb);
if (ret) {
rtw_err(rtwdev, "failed to write TX skb to HCI\n");
return ret;
}
rtwtxq->last_push = jiffies;
return 0;
}
static struct sk_buff *rtw_txq_dequeue(struct rtw_dev *rtwdev,
struct rtw_txq *rtwtxq)
{
struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq);
struct sk_buff *skb;
skb = ieee80211_tx_dequeue(rtwdev->hw, txq);
if (!skb)
return NULL;
return skb;
}
static void rtw_txq_push(struct rtw_dev *rtwdev,
struct rtw_txq *rtwtxq,
unsigned long frames)
{
struct sk_buff *skb;
int ret;
int i;
rcu_read_lock();
for (i = 0; i < frames; i++) {
skb = rtw_txq_dequeue(rtwdev, rtwtxq);
if (!skb)
break;
ret = rtw_txq_push_skb(rtwdev, rtwtxq, skb);
if (ret) {
rtw_err(rtwdev, "failed to pusk skb, ret %d\n", ret);
break;
}
}
rcu_read_unlock();
}
void rtw_tx_work(struct work_struct *w)
{
struct rtw_dev *rtwdev = container_of(w, struct rtw_dev, tx_work);
struct rtw_txq *rtwtxq, *tmp;
spin_lock_bh(&rtwdev->txq_lock);
list_for_each_entry_safe(rtwtxq, tmp, &rtwdev->txqs, list) {
struct ieee80211_txq *txq = rtwtxq_to_txq(rtwtxq);
unsigned long frame_cnt;
unsigned long byte_cnt;
ieee80211_txq_get_depth(txq, &frame_cnt, &byte_cnt);
rtw_txq_push(rtwdev, rtwtxq, frame_cnt);
list_del_init(&rtwtxq->list);
}
rtw_hci_tx_kick_off(rtwdev);
spin_unlock_bh(&rtwdev->txq_lock);
}
void rtw_txq_init(struct rtw_dev *rtwdev, struct ieee80211_txq *txq)
{
struct rtw_txq *rtwtxq;
if (!txq)
return;
rtwtxq = (struct rtw_txq *)txq->drv_priv;
INIT_LIST_HEAD(&rtwtxq->list);
}
void rtw_txq_cleanup(struct rtw_dev *rtwdev, struct ieee80211_txq *txq)
{
struct rtw_txq *rtwtxq;
if (!txq)
return;
rtwtxq = (struct rtw_txq *)txq->drv_priv;
spin_lock_bh(&rtwdev->txq_lock);
if (!list_empty(&rtwtxq->list))
list_del_init(&rtwtxq->list);
spin_unlock_bh(&rtwdev->txq_lock);
}