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mt7603_mac.c
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/*
* Copyright (C) 2016 Felix Fietkau <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* 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.
*/
#include <linux/etherdevice.h>
#include "mt7603.h"
#include "mt7603_mac.h"
#define MT_PSE_PAGE_SIZE 128
static u32
mt7603_ac_queue_mask0(u32 mask)
{
u32 ret = 0;
ret |= GENMASK(3, 0) * !!(mask & BIT(0));
ret |= GENMASK(8, 5) * !!(mask & BIT(1));
ret |= GENMASK(13, 10) * !!(mask & BIT(2));
ret |= GENMASK(19, 16) * !!(mask & BIT(3));
return ret;
}
static void
mt76_stop_tx_ac(struct mt7603_dev *dev, u32 mask)
{
mt76_set(dev, MT_WF_ARB_TX_STOP_0, mt7603_ac_queue_mask0(mask));
}
static void
mt76_start_tx_ac(struct mt7603_dev *dev, u32 mask)
{
mt76_set(dev, MT_WF_ARB_TX_START_0, mt7603_ac_queue_mask0(mask));
}
void mt7603_mac_set_timing(struct mt7603_dev *dev)
{
u32 cck = MT76_SET(MT_TIMEOUT_VAL_PLCP, 231) |
MT76_SET(MT_TIMEOUT_VAL_CCA, 48);
u32 ofdm = MT76_SET(MT_TIMEOUT_VAL_PLCP, 60) |
MT76_SET(MT_TIMEOUT_VAL_CCA, 24);
int offset = 3 * dev->coverage_class;
u32 reg_offset = MT76_SET(MT_TIMEOUT_VAL_PLCP, offset) |
MT76_SET(MT_TIMEOUT_VAL_CCA, offset);
int sifs;
if (dev->chandef.chan->band == IEEE80211_BAND_5GHZ)
sifs = 16;
else
sifs = 10;
mt7603_mac_stop(dev);
mt76_wr(dev, MT_TIMEOUT_CCK, cck + reg_offset);
mt76_wr(dev, MT_TIMEOUT_OFDM, ofdm + reg_offset);
mt76_wr(dev, MT_IFS,
MT76_SET(MT_IFS_EIFS, 360) |
MT76_SET(MT_IFS_RIFS, 2) |
MT76_SET(MT_IFS_SIFS, sifs) |
MT76_SET(MT_IFS_SLOT, dev->slottime));
mt7603_mac_start(dev);
}
static void
mt7603_wtbl_update(struct mt7603_dev *dev, int idx, u32 mask)
{
mt76_rmw(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_WLAN_IDX,
MT76_SET(MT_WTBL_UPDATE_WLAN_IDX, idx) | mask);
mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000);
}
static u32
mt7603_wtbl1_addr(int idx)
{
return MT_WTBL1_BASE + idx * MT_WTBL1_SIZE;
}
static u32
mt7603_wtbl2_addr(int idx)
{
/* Mapped to WTBL2 */
return MT_PCIE_REMAP_BASE_1 + idx * MT_WTBL2_SIZE;
}
static u32
mt7603_wtbl3_addr(int idx)
{
u32 base = mt7603_wtbl2_addr(MT7603_WTBL_SIZE);
return base + idx * MT_WTBL3_SIZE;
}
static u32
mt7603_wtbl4_addr(int idx)
{
u32 base = mt7603_wtbl3_addr(MT7603_WTBL_SIZE);
return base + idx * MT_WTBL4_SIZE;
}
void mt7603_wtbl_init(struct mt7603_dev *dev, int idx, const u8 *mac_addr)
{
const void *_mac = mac_addr;
u32 addr = mt7603_wtbl1_addr(idx);
int i;
mt76_set(dev, addr + 0 * 4,
MT76_SET(MT_WTBL1_W0_ADDR_HI, get_unaligned_le16(_mac + 4)));
mt76_set(dev, addr + 1 * 4,
MT76_SET(MT_WTBL1_W1_ADDR_LO, get_unaligned_le32(_mac)));
mt76_set(dev, addr + 2 * 4, MT_WTBL1_W2_ADMISSION_CONTROL);
addr = mt7603_wtbl2_addr(idx);
for (i = 0; i < MT_WTBL2_SIZE; i += 4)
mt76_wr(dev, addr + i, 0);
addr = mt7603_wtbl3_addr(idx);
for (i = 0; i < MT_WTBL3_SIZE; i += 4)
mt76_wr(dev, addr + i, 0);
addr = mt7603_wtbl4_addr(idx);
for (i = 0; i < MT_WTBL4_SIZE; i += 4)
mt76_wr(dev, addr + i, 0);
}
void mt7603_wtbl_set_ps(struct mt7603_dev *dev, int idx, bool val)
{
u32 addr = mt7603_wtbl1_addr(idx);
mt76_set(dev, MT_WTBL1_OR, MT_WTBL1_OR_PSM_WRITE);
mt76_rmw_field(dev, addr + 3 * 4, MT_WTBL1_W3_POWER_SAVE, val);
mt76_clear(dev, MT_WTBL1_OR, MT_WTBL1_OR_PSM_WRITE);
}
void mt7603_wtbl_clear(struct mt7603_dev *dev, int idx)
{
int wtbl2_frame_size = MT_PSE_PAGE_SIZE / MT_WTBL2_SIZE;
int wtbl2_frame = idx / wtbl2_frame_size;
int wtbl2_entry = idx % wtbl2_frame_size;
int wtbl3_base_frame = MT_WTBL3_OFFSET / MT_PSE_PAGE_SIZE;
int wtbl3_frame_size = MT_PSE_PAGE_SIZE / MT_WTBL3_SIZE;
int wtbl3_frame = wtbl3_base_frame + idx / wtbl3_frame_size;
int wtbl3_entry = (idx % wtbl3_frame_size) * 2;
int wtbl4_base_frame = MT_WTBL4_OFFSET / MT_PSE_PAGE_SIZE;
int wtbl4_frame_size = MT_PSE_PAGE_SIZE / MT_WTBL4_SIZE;
int wtbl4_frame = wtbl4_base_frame + idx / wtbl4_frame_size;
int wtbl4_entry = idx % wtbl4_frame_size;
u32 addr = MT_WTBL1_BASE + idx * MT_WTBL1_SIZE;
int i;
mt76_wr(dev, addr + 0 * 4,
MT_WTBL1_W0_RX_CHECK_A1 |
MT_WTBL1_W0_RX_CHECK_A2 |
MT_WTBL1_W0_RX_VALID);
mt76_wr(dev, addr + 1 * 4, 0);
mt76_wr(dev, addr + 2 * 4, 0);
mt76_set(dev, MT_WTBL1_OR, MT_WTBL1_OR_PSM_WRITE);
mt76_wr(dev, addr + 3 * 4,
MT76_SET(MT_WTBL1_W3_WTBL2_FRAME_ID, wtbl2_frame) |
MT76_SET(MT_WTBL1_W3_WTBL2_ENTRY_ID, wtbl2_entry) |
MT76_SET(MT_WTBL1_W3_WTBL4_FRAME_ID, wtbl4_frame) |
MT_WTBL1_W3_I_PSM | MT_WTBL1_W3_KEEP_I_PSM);
mt76_wr(dev, addr + 4 * 4,
MT76_SET(MT_WTBL1_W4_WTBL3_FRAME_ID, wtbl3_frame) |
MT76_SET(MT_WTBL1_W4_WTBL3_ENTRY_ID, wtbl3_entry) |
MT76_SET(MT_WTBL1_W4_WTBL4_ENTRY_ID, wtbl4_entry));
mt76_clear(dev, MT_WTBL1_OR, MT_WTBL1_OR_PSM_WRITE);
addr = mt7603_wtbl2_addr(idx);
/* Clear BA information */
mt76_wr(dev, addr + (15 * 4), 0);
mt76_stop_tx_ac(dev, GENMASK(3, 0));
for (i = 2; i <= 4; i++)
mt76_wr(dev, addr + (i * 4), 0);
mt7603_wtbl_update(dev, idx, MT_WTBL_UPDATE_WTBL2);
mt76_start_tx_ac(dev, GENMASK(3, 0));
mt7603_wtbl_update(dev, idx, MT_WTBL_UPDATE_RX_COUNT_CLEAR);
mt7603_wtbl_update(dev, idx, MT_WTBL_UPDATE_TX_COUNT_CLEAR);
mt7603_wtbl_update(dev, idx, MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
}
void mt7603_wtbl_update_cap(struct mt7603_dev *dev, struct ieee80211_sta *sta)
{
struct mt7603_sta *msta = (struct mt7603_sta *) sta->drv_priv;
int idx = msta->wcid.idx;
u32 addr;
u32 val;
addr = mt7603_wtbl1_addr(idx);
val = mt76_rr(dev, addr + 2 * 4);
val &= MT_WTBL1_W2_KEY_TYPE | MT_WTBL1_W2_ADMISSION_CONTROL;
val |= MT76_SET(MT_WTBL1_W2_AMPDU_FACTOR, sta->ht_cap.ampdu_factor) |
MT76_SET(MT_WTBL1_W2_MPDU_DENSITY, sta->ht_cap.ampdu_density) |
MT_WTBL1_W2_TXS_BAF_REPORT;
if (sta->ht_cap.cap)
val |= MT_WTBL1_W2_HT;
if (sta->vht_cap.cap)
val |= MT_WTBL1_W2_VHT;
mt76_wr(dev, addr + 2 * 4, val);
addr = mt7603_wtbl2_addr(idx);
val = mt76_rr(dev, addr + 9 * 4);
val &= ~(MT_WTBL2_W9_SHORT_GI_20 | MT_WTBL2_W9_SHORT_GI_40 |
MT_WTBL2_W9_SHORT_GI_80);
if (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20)
val |= MT_WTBL2_W9_SHORT_GI_20;
if (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40)
val |= MT_WTBL2_W9_SHORT_GI_40;
mt76_wr(dev, addr + 9 * 4, val);
}
void mt7603_mac_rx_ba_reset(struct mt7603_dev *dev, void *addr, u8 tid)
{
mt76_wr(dev, MT_BA_CONTROL_0, get_unaligned_le32(addr));
mt76_wr(dev, MT_BA_CONTROL_1,
(get_unaligned_le16(addr + 4) |
MT76_SET(MT_BA_CONTROL_1_TID, tid) |
MT_BA_CONTROL_1_RESET));
}
void mt7603_mac_tx_ba_reset(struct mt7603_dev *dev, int wcid, int tid, int ssn,
int ba_size)
{
u32 addr = mt7603_wtbl2_addr(wcid);
u32 tid_mask = MT76_SET(MT_WTBL2_W15_BA_EN_TIDS, BIT(tid)) |
(MT_WTBL2_W15_BA_WIN_SIZE <<
(tid * MT_WTBL2_W15_BA_WIN_SIZE_SHIFT));
u32 tid_val;
int i;
if (ba_size < 0) {
/* disable */
mt76_clear(dev, addr + (15 * 4), tid_mask);
return;
}
mt7603_mac_stop(dev);
switch (tid) {
case 0:
mt76_rmw_field(dev, addr + (2 * 4), MT_WTBL2_W2_TID0_SN, ssn);
break;
case 1:
mt76_rmw_field(dev, addr + (2 * 4), MT_WTBL2_W2_TID1_SN, ssn);
break;
case 2:
mt76_rmw_field(dev, addr + (2 * 4), MT_WTBL2_W2_TID2_SN_LO,
ssn);
mt76_rmw_field(dev, addr + (3 * 4), MT_WTBL2_W3_TID2_SN_HI,
ssn >> 8);
break;
case 3:
mt76_rmw_field(dev, addr + (3 * 4), MT_WTBL2_W3_TID3_SN, ssn);
break;
case 4:
mt76_rmw_field(dev, addr + (3 * 4), MT_WTBL2_W3_TID4_SN, ssn);
break;
case 5:
mt76_rmw_field(dev, addr + (3 * 4), MT_WTBL2_W3_TID5_SN_LO,
ssn);
mt76_rmw_field(dev, addr + (4 * 4), MT_WTBL2_W4_TID5_SN_HI,
ssn >> 4);
break;
case 6:
mt76_rmw_field(dev, addr + (4 * 4), MT_WTBL2_W4_TID6_SN, ssn);
break;
case 7:
mt76_rmw_field(dev, addr + (4 * 4), MT_WTBL2_W4_TID7_SN, ssn);
break;
}
mt7603_wtbl_update(dev, wcid, MT_WTBL_UPDATE_WTBL2);
mt7603_mac_start(dev);
for (i = 7; i > 0; i--) {
if (ba_size >= MT_AGG_SIZE_LIMIT(i))
break;
}
tid_val = MT76_SET(MT_WTBL2_W15_BA_EN_TIDS, BIT(tid)) |
i << (tid * MT_WTBL2_W15_BA_WIN_SIZE_SHIFT);
mt76_rmw(dev, addr + (15 * 4), tid_mask, tid_val);
}
static int
mt7603_get_rate(struct mt7603_dev *dev, struct ieee80211_supported_band *sband,
int idx, bool cck)
{
int offset = 0;
int len = sband->n_bitrates;
int i;
if (cck) {
if (WARN_ON_ONCE(sband == &dev->mt76.sband_5g))
return 0;
idx &= ~BIT(2); /* short preamble */
} else if (sband == &dev->mt76.sband_2g) {
offset = 4;
}
for (i = offset; i < len; i++) {
if ((sband->bitrates[i].hw_value & GENMASK(7, 0)) == idx)
return i;
}
WARN_ON_ONCE(1);
return 0;
}
int
mt7603_mac_fill_rx(struct mt7603_dev *dev, struct sk_buff *skb)
{
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_supported_band *sband;
__le32 *rxd = (__le32 *) skb->data;
u32 rxd0 = le32_to_cpu(rxd[0]);
bool remove_pad;
int i;
memset(status, 0, sizeof(*status));
i = MT76_GET(MT_RXD1_NORMAL_CH_FREQ, rxd[1]);
sband = (i & 1) ? &dev->mt76.sband_5g : &dev->mt76.sband_2g;
i >>= 1;
status->band = sband->band;
if (i < sband->n_channels)
status->freq = sband->channels[i].center_freq;
if (rxd[2] & MT_RXD2_NORMAL_FCS_ERR)
status->flag |= RX_FLAG_FAILED_FCS_CRC;
if (rxd[2] & MT_RXD2_NORMAL_TKIP_MIC_ERR)
status->flag |= RX_FLAG_MMIC_ERROR;
if (MT76_GET(MT_RXD2_NORMAL_SEC_MODE, rxd[2]) != 0 &&
!(rxd[2] & (MT_RXD2_NORMAL_CLM | MT_RXD2_NORMAL_CM))) {
status->flag |= RX_FLAG_DECRYPTED;
status->flag |= RX_FLAG_IV_STRIPPED | RX_FLAG_MMIC_STRIPPED;
}
remove_pad = rxd[1] & MT_RXD1_NORMAL_HDR_OFFSET;
if (rxd[2] & MT_RXD2_NORMAL_MAX_LEN_ERROR)
return -EINVAL;
if (WARN_ON_ONCE(!sband->channels))
return -EINVAL;
rxd += 4;
if (rxd0 & MT_RXD0_NORMAL_GROUP_4) {
rxd += 4;
if ((u8 *) rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd0 & MT_RXD0_NORMAL_GROUP_1) {
rxd += 4;
if ((u8 *) rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd0 & MT_RXD0_NORMAL_GROUP_2) {
rxd += 2;
if ((u8 *) rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd0 & MT_RXD0_NORMAL_GROUP_3) {
bool cck = false;
i = MT76_GET(MT_RXV1_TX_RATE, rxd[0]);
switch (MT76_GET(MT_RXV1_TX_MODE, rxd[0])) {
case MT_PHY_TYPE_CCK:
cck = true;
/* fall through */
case MT_PHY_TYPE_OFDM:
i = mt7603_get_rate(dev, sband, i, cck);
break;
case MT_PHY_TYPE_HT_GF:
case MT_PHY_TYPE_HT:
status->flag |= RX_FLAG_HT;
break;
case MT_PHY_TYPE_VHT:
status->flag |= RX_FLAG_VHT;
break;
default:
WARN_ON(1);
}
if (rxd[0] & MT_RXV1_HT_SHORT_GI)
status->flag |= RX_FLAG_SHORT_GI;
status->flag |= RX_FLAG_STBC_MASK *
MT76_GET(MT_RXV1_HT_STBC, rxd[0]);
status->rate_idx = i;
status->chains = BIT(0) | BIT(1);
status->chain_signal[0] = MT76_GET(MT_RXV4_IB_RSSI0, rxd[3]) +
dev->rssi_offset[0];
status->chain_signal[1] = MT76_GET(MT_RXV4_IB_RSSI1, rxd[3]) +
dev->rssi_offset[1];
status->signal = max(status->chain_signal[0], status->chain_signal[1]);
rxd += 6;
if ((u8 *) rxd - skb->data >= skb->len)
return -EINVAL;
}
skb_pull(skb, (u8 *) rxd - skb->data + 2 * remove_pad);
return 0;
}
static u16
mt7603_mac_tx_rate_val(struct mt7603_dev *dev,
const struct ieee80211_tx_rate *rate, bool stbc, u8 *bw)
{
u8 phy, nss, rate_idx;
u16 rateval;
*bw = 0;
if (rate->flags & IEEE80211_TX_RC_MCS) {
rate_idx = rate->idx;
nss = 1 + (rate->idx >> 3);
phy = MT_PHY_TYPE_HT;
if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
phy = MT_PHY_TYPE_HT_GF;
if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
*bw = 1;
} else {
const struct ieee80211_rate *r;
int band = dev->chandef.chan->band;
u16 val;
nss = 1;
r = &mt76_hw(dev)->wiphy->bands[band]->bitrates[rate->idx];
if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
val = r->hw_value_short;
else
val = r->hw_value;
phy = val >> 8;
rate_idx = val & 0xff;
}
rateval = (MT76_SET(MT_TX_RATE_IDX, rate_idx) |
MT76_SET(MT_TX_RATE_MODE, phy));
if (stbc && nss == 1)
rateval |= MT_TX_RATE_STBC;
return rateval;
}
void mt7603_wtbl_set_rates(struct mt7603_dev *dev, struct mt7603_sta *sta)
{
struct ieee80211_tx_rate *rates = sta->rates;
int wcid = sta->wcid.idx;
u32 addr = mt7603_wtbl2_addr(wcid);
bool stbc = false;
int n_rates = sta->n_rates;
u8 bw, bw_prev, bw_idx = 0;
u16 val[4];
int i;
for (i = n_rates; i < 4; i++)
rates[i] = rates[n_rates - 1];
val[0] = mt7603_mac_tx_rate_val(dev, &rates[0], stbc, &bw);
mt76_rmw_field(dev, addr + 9 * 4, MT_WTBL2_W9_BW_CAP, bw);
mt76_rmw_field(dev, addr + 10 * 4, MT_WTBL2_W10_RATE1, val[0]);
bw_prev = bw;
val[1] = mt7603_mac_tx_rate_val(dev, &rates[1], stbc, &bw);
mt76_rmw_field(dev, addr + 10 * 4, MT_WTBL2_W10_RATE2, val[1]);
if (bw_prev < bw && !bw_idx)
bw_idx = 1;
bw_prev = bw;
val[2] = mt7603_mac_tx_rate_val(dev, &rates[2], stbc, &bw);
mt76_rmw_field(dev, addr + 10 * 4, MT_WTBL2_W10_RATE3_LO, val[2]);
mt76_rmw_field(dev, addr + 11 * 4, MT_WTBL2_W11_RATE3_HI, val[2] >> 4);
if (bw_prev < bw && !bw_idx)
bw_idx = 2;
bw_prev = bw;
val[3] = mt7603_mac_tx_rate_val(dev, &rates[3], stbc, &bw);
mt76_rmw_field(dev, addr + 11 * 4, MT_WTBL2_W11_RATE4, val[3]);
if (bw_prev < bw && !bw_idx)
bw_idx = 3;
mt76_rmw_field(dev, addr + 9 * 4, MT_WTBL2_W9_CHANGE_BW_RATE,
bw_idx ? bw_idx - 1 : 7);
mt76_wr(dev, MT_WTBL_UPDATE,
MT76_SET(MT_WTBL_UPDATE_WLAN_IDX, wcid) |
MT_WTBL_UPDATE_WTBL2 |
MT_WTBL_UPDATE_TX_COUNT_CLEAR);
}
static enum mt7603_cipher_type
mt7603_mac_get_key_info(struct ieee80211_key_conf *key, u8 *key_data)
{
memset(key_data, 0, 32);
if (!key)
return MT_CIPHER_NONE;
if (key->keylen > 32)
return MT_CIPHER_NONE;
memcpy(key_data, key->key, key->keylen);
switch(key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
return MT_CIPHER_WEP40;
case WLAN_CIPHER_SUITE_WEP104:
return MT_CIPHER_WEP104;
case WLAN_CIPHER_SUITE_TKIP:
return MT_CIPHER_TKIP;
case WLAN_CIPHER_SUITE_CCMP:
return MT_CIPHER_AES_CCMP;
default:
return MT_CIPHER_NONE;
}
}
int mt7603_wtbl_set_key(struct mt7603_dev *dev, int wcid,
struct ieee80211_key_conf *key)
{
enum mt7603_cipher_type cipher;
u32 addr = mt7603_wtbl3_addr(wcid);
u8 key_data[32];
int key_len = sizeof(key_data);
cipher = mt7603_mac_get_key_info(key, key_data);
if (cipher == MT_CIPHER_NONE && key)
return -EINVAL;
if (key && (cipher == MT_CIPHER_WEP40 || cipher == MT_CIPHER_WEP104)) {
addr += key->keyidx * 16;
key_len = 16;
}
mt76_wr_copy(dev, addr, key_data, key_len);
addr = mt7603_wtbl1_addr(wcid);
mt76_rmw_field(dev, addr + 2 * 4, MT_WTBL1_W2_KEY_TYPE, cipher);
if (key)
mt76_rmw_field(dev, addr, MT_WTBL1_W0_KEY_IDX, key->keyidx);
mt76_rmw_field(dev, addr, MT_WTBL1_W0_RX_KEY_VALID, !!key);
return 0;
}
static int
mt7603_mac_write_txwi(struct mt7603_dev *dev, __le32 *txwi,
struct sk_buff *skb, struct mt76_queue *q,
struct mt76_wcid *wcid, struct ieee80211_sta *sta,
int pid, struct ieee80211_key_conf *key)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_rate *rate = &info->control.rates[0];
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
int wlan_idx;
int hdr_len = ieee80211_get_hdrlen_from_skb(skb);
int tx_count = 8;
u8 frame_type, frame_subtype;
u8 bw;
if (sta) {
struct mt7603_sta *msta = (struct mt7603_sta *) sta->drv_priv;
tx_count = msta->n_rates * MT7603_RATE_RETRY;
}
if (wcid)
wlan_idx = wcid->idx;
else
wlan_idx = MT7603_WTBL_RESERVED;
frame_type = MT76_GET(IEEE80211_FCTL_FTYPE,
le16_to_cpu(hdr->frame_control));
frame_subtype = MT76_GET(IEEE80211_FCTL_STYPE,
le16_to_cpu(hdr->frame_control));
txwi[0] = cpu_to_le32(
MT76_SET(MT_TXD0_TX_BYTES, skb->len + MT_TXD_SIZE) |
MT76_SET(MT_TXD0_Q_IDX, q->hw_idx)
);
txwi[1] = cpu_to_le32(
MT_TXD1_LONG_FORMAT |
MT76_SET(MT_TXD1_OWN_MAC, 0) |
MT76_SET(MT_TXD1_TID, skb->priority &
IEEE80211_QOS_CTL_TID_MASK) |
MT76_SET(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_11) |
MT76_SET(MT_TXD1_HDR_INFO, hdr_len / 2) |
MT76_SET(MT_TXD1_WLAN_IDX, wlan_idx) |
MT76_SET(MT_TXD1_PROTECTED, !!key)
);
if (info->flags & IEEE80211_TX_CTL_NO_ACK) {
txwi[1] |= cpu_to_le32(MT_TXD1_NO_ACK);
pid = MT_PID_NOACK;
}
txwi[2] = cpu_to_le32(
MT76_SET(MT_TXD2_FRAME_TYPE, frame_type) |
MT76_SET(MT_TXD2_SUB_TYPE, frame_subtype) |
MT76_SET(MT_TXD2_MULTICAST, is_multicast_ether_addr(hdr->addr1))
);
if (!(info->flags & IEEE80211_TX_CTL_AMPDU))
txwi[2] |= cpu_to_le32(MT_TXD2_BA_DISABLE);
txwi[4] = 0;
txwi[5] = cpu_to_le32(
MT_TXD5_TX_STATUS_HOST | MT_TXD5_SW_POWER_MGMT |
MT76_SET(MT_TXD5_PID, pid)
);
txwi[6] = 0;
if (rate->idx >= 0 && rate->count) {
bool stbc = info->flags & IEEE80211_TX_CTL_STBC;
u16 rateval = mt7603_mac_tx_rate_val(dev, rate, stbc, &bw);
txwi[6] |= cpu_to_le32(
MT_TXD6_FIXED_RATE |
MT_TXD6_FIXED_BW |
MT76_SET(MT_TXD6_BW, bw) |
MT76_SET(MT_TXD6_TX_RATE, rateval)
);
if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
txwi[6] |= cpu_to_le32(MT_TXD6_SGI);
tx_count = rate->count;
}
/* use maximum tx count for beacons */
if (q->hw_idx == MT_TX_HW_QUEUE_BCN)
tx_count = 0x1f;
txwi[3] = cpu_to_le32(
MT76_SET(MT_TXD3_REM_TX_COUNT, tx_count) |
MT76_SET(MT_TXD3_SEQ, le16_to_cpu(hdr->seq_ctrl))
);
if (key) {
u64 pn = atomic64_inc_return(&key->tx_pn);
txwi[3] |= cpu_to_le32(MT_TXD3_PN_VALID);
txwi[4] = pn & GENMASK(31, 0);
txwi[5] |= MT76_SET(MT_TXD5_PN_HIGH, pn >> 32);
}
txwi[7] = 0;
return 0;
}
int mt7603_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
struct sk_buff *skb, struct mt76_queue *q,
struct mt76_wcid *wcid, struct ieee80211_sta *sta,
u32 *tx_info)
{
struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct mt7603_sta *msta = container_of(wcid, struct mt7603_sta, wcid);
struct mt7603_cb *cb = mt7603_skb_cb(skb);
struct ieee80211_key_conf *key = info->control.hw_key;
int pid = 0;
if (!wcid)
wcid = &dev->global_sta.wcid;
memset(cb, 0, sizeof(*cb));
if ((info->flags & (IEEE80211_TX_CTL_REQ_TX_STATUS |
IEEE80211_TX_CTL_RATE_CTRL_PROBE)) ||
info->control.rates[0].idx >= 0) {
spin_lock_bh(&dev->status_lock);
msta->pid = (msta->pid + 1) & MT_PID_INDEX;
if (!msta->pid || msta->pid == MT_PID_NOACK)
msta->pid = 1;
pid = msta->pid;
cb->wcid = wcid->idx;
cb->pktid = pid;
list_add_tail(&cb->list, &dev->status_list);
spin_unlock_bh(&dev->status_lock);
} else {
INIT_LIST_HEAD(&cb->list);
}
mt7603_mac_write_txwi(dev, txwi_ptr, skb, q, wcid, sta, pid, key);
return 0;
}
static bool
mt7603_fill_txs(struct mt7603_dev *dev, struct mt7603_sta *sta,
struct ieee80211_tx_info *info, __le32 *txs_data)
{
bool final_mpdu;
bool ampdu;
int count;
u32 txs;
u8 pid;
int i;
txs = le32_to_cpu(txs_data[4]);
final_mpdu = txs & MT_TXS4_ACKED_MPDU;
ampdu = txs & MT_TXS4_AMPDU;
pid = MT76_GET(MT_TXS4_PID, txs);
count = MT76_GET(MT_TXS4_TX_COUNT, txs);
txs = le32_to_cpu(txs_data[0]);
if (!(txs & MT_TXS0_ACK_ERROR_MASK)) {
if (ampdu)
sta->ampdu_acked++;
info->flags |= IEEE80211_TX_STAT_ACK;
}
if (info->status.rates[0].count) {
info->status.rates[0].count = count;
info->status.rates[1].count = 0;
} else {
for (i = 0; i < ARRAY_SIZE(info->status.rates); i++) {
if (!count) {
info->status.rates[i].idx = -1;
break;
}
info->status.rates[i] = sta->rates[i];
info->status.rates[i].count = min_t(int, count, MT7603_RATE_RETRY);
count -= MT7603_RATE_RETRY;
if (count < 0)
count = 0;
}
}
sta->ampdu_count++;
if (ampdu && !final_mpdu)
return false;
info->status.ampdu_len = sta->ampdu_count;
info->status.ampdu_ack_len = sta->ampdu_acked;
if (ampdu || (info->flags & IEEE80211_TX_CTL_AMPDU))
info->flags |= IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_CTL_AMPDU;
sta->ampdu_count = 0;
sta->ampdu_acked = 0;
return true;
}
static void
mt7603_skb_done(struct mt7603_dev *dev, struct sk_buff *skb, u8 flags)
{
struct mt7603_cb *cb = mt7603_skb_cb(skb);
u8 done = MT7603_CB_DMA_DONE | MT7603_CB_TXS_DONE;
flags |= cb->flags;
cb->flags = flags;
if ((flags & done) != done)
return;
if (flags & MT7603_CB_TXS_FAILED)
ieee80211_free_txskb(mt76_hw(dev), skb);
else
ieee80211_tx_status(mt76_hw(dev), skb);
}
struct sk_buff *
mt7603_mac_status_skb(struct mt7603_dev *dev, struct mt7603_sta *sta, int pktid)
{
struct mt7603_cb *cb, *tmp;
struct sk_buff *skb = NULL;
list_for_each_entry_safe(cb, tmp, &dev->status_list, list) {
if (sta && cb->wcid != sta->wcid.idx)
continue;
list_del_init(&cb->list);
skb = mt7603_cb_skb(cb);
if (cb->pktid == pktid)
break;
mt7603_skb_done(dev, skb,
MT7603_CB_TXS_FAILED | MT7603_CB_TXS_DONE);
skb = NULL;
}
return skb;
}
static bool
mt7603_mac_add_txs_skb(struct mt7603_dev *dev, struct mt7603_sta *sta, int pid,
__le32 *txs_data)
{
struct sk_buff *skb;
if (!pid)
return false;
spin_lock_bh(&dev->status_lock);
skb = mt7603_mac_status_skb(dev, sta, pid);
spin_unlock_bh(&dev->status_lock);
if (skb) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
mt7603_fill_txs(dev, sta, info, txs_data);
mt7603_skb_done(dev, skb, MT7603_CB_TXS_DONE);
}
return !!skb;
}
void mt7603_mac_add_txs(struct mt7603_dev *dev, void *data)
{
struct ieee80211_tx_info info = {};
struct ieee80211_sta *sta = NULL;
struct mt7603_sta *msta = NULL;
struct mt76_wcid *wcid;
__le32 *txs_data = data;
void *priv;
u32 txs;
u8 wcidx;
u8 pid;
txs = le32_to_cpu(txs_data[4]);
pid = MT76_GET(MT_TXS4_PID, txs);
txs = le32_to_cpu(txs_data[3]);
wcidx = MT76_GET(MT_TXS3_WCID, txs);
if (pid == MT_PID_NOACK)
return;
if (wcidx >= ARRAY_SIZE(dev->wcid))
return;
rcu_read_lock();
wcid = rcu_dereference(dev->wcid[wcidx]);
if (!wcid)
goto out;
priv = msta = container_of(wcid, struct mt7603_sta, wcid);
sta = container_of(priv, struct ieee80211_sta, drv_priv);
pid &= MT_PID_INDEX;
if (mt7603_mac_add_txs_skb(dev, msta, pid, txs_data))
goto out;
if (wcidx >= MT7603_WTBL_STA)
goto out;
if (mt7603_fill_txs(dev, msta, &info, txs_data))
ieee80211_tx_status_noskb(mt76_hw(dev), sta, &info);
out:
rcu_read_unlock();
}
void mt7603_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue *q,
struct mt76_queue_entry *e, bool flush)
{
struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
struct mt7603_cb *cb = mt7603_skb_cb(e->skb);
bool free = true;
if (!e->txwi) {
dev_kfree_skb_any(e->skb);
return;
}
/* will be freed by tx status handling codepath */
if (!list_empty(&cb->list)) {
spin_lock_bh(&dev->status_lock);
if (!flush) {
mt7603_skb_done(dev, e->skb, MT7603_CB_DMA_DONE);
free = false;
} else {
list_del_init(&cb->list);
}
spin_unlock_bh(&dev->status_lock);
}
if (free)
ieee80211_free_txskb(mdev->hw, e->skb);
}
static bool
wait_for_wpdma(struct mt7603_dev *dev)
{
return mt76_poll(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_TX_DMA_BUSY |
MT_WPDMA_GLO_CFG_RX_DMA_BUSY,
0, 1000);
}
void mt7603_mac_reset(struct mt7603_dev *dev)
{
u32 addr = mt7603_reg_map(dev, MT_CLIENT_BASE_PHYS_ADDR);
/* Reset PSE */
mt76_set(dev, MT_PSE_RESET, MT_PSE_RESET_SW);
mt76_poll_msec(dev, MT_PSE_RESET, MT_PSE_RESET_SW_S,
MT_PSE_RESET_SW_S, 500);
mt76_clear(dev, MT_PSE_RESET, MT_PSE_RESET_SW_S);
mt76_set(dev, addr + MT_CLIENT_RESET_TX, MT_CLIENT_RESET_TX_R_E_1);
mt76_poll_msec(dev, addr + MT_CLIENT_RESET_TX,
MT_CLIENT_RESET_TX_R_E_1_S,
MT_CLIENT_RESET_TX_R_E_1_S, 500);
mt76_set(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_SW_RESET);
mt76_set(dev, addr + MT_CLIENT_RESET_TX, MT_CLIENT_RESET_TX_R_E_2);
mt76_poll_msec(dev, addr + MT_CLIENT_RESET_TX,
MT_CLIENT_RESET_TX_R_E_2_S,
MT_CLIENT_RESET_TX_R_E_2_S, 500);
mt76_clear(dev, addr + MT_CLIENT_RESET_TX,
MT_CLIENT_RESET_TX_R_E_1 | MT_CLIENT_RESET_TX_R_E_2);
}
void mt7603_mac_dma_start(struct mt7603_dev *dev)
{
mt7603_mac_start(dev);
wait_for_wpdma(dev);
udelay(50);
mt76_set(dev, MT_WPDMA_GLO_CFG,
(MT_WPDMA_GLO_CFG_TX_DMA_EN |
MT_WPDMA_GLO_CFG_RX_DMA_EN |
MT76_SET(MT_WPDMA_GLO_CFG_DMA_BURST_SIZE, 3) |
MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE));
mt7603_irq_enable(dev, MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL);
}
void mt7603_mac_start(struct mt7603_dev *dev)
{
mt76_clear(dev, MT_ARB_SCR, MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE);
mt76_wr(dev, MT_WF_ARB_TX_START_0, ~0);
mt76_set(dev, MT_WF_ARB_RQCR, MT_WF_ARB_RQCR_RX_START);
}
void mt7603_mac_stop(struct mt7603_dev *dev)
{
mt76_set(dev, MT_ARB_SCR, MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE);
mt76_wr(dev, MT_WF_ARB_TX_START_0, 0);
mt76_clear(dev, MT_WF_ARB_RQCR, MT_WF_ARB_RQCR_RX_START);
}
static void mt7603_mac_watchdog_reset(struct mt7603_dev *dev)
{
int beacon_int = dev->beacon_int;
u32 mask = dev->irqmask;
int i;
set_bit(MT76_RESET, &dev->mt76.state);
mt76_clear(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_RX_DMA_EN | MT_WPDMA_GLO_CFG_TX_DMA_EN |
MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE);
msleep(1);
mt7603_irq_disable(dev, mask);
tasklet_disable(&dev->tx_tasklet);
tasklet_disable(&dev->pre_tbtt_tasklet);
napi_disable(&dev->mt76.napi[0]);
napi_disable(&dev->mt76.napi[1]);
mt7603_beacon_set_timer(dev, -1, 0);
mt76_set(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_FORCE_TX_EOF);
mt7603_mac_reset(dev);