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// SPDX-License-Identifier: ISC
#include "mt7603.h"
#include "mac.h"
#include "../dma.h"
static int
mt7603_init_tx_queue(struct mt7603_dev *dev, struct mt76_sw_queue *q,
int idx, int n_desc)
{
struct mt76_queue *hwq;
int err;
hwq = devm_kzalloc(dev->mt76.dev, sizeof(*hwq), GFP_KERNEL);
if (!hwq)
return -ENOMEM;
err = mt76_queue_alloc(dev, hwq, idx, n_desc, 0, MT_TX_RING_BASE);
if (err < 0)
return err;
INIT_LIST_HEAD(&q->swq);
q->q = hwq;
mt7603_irq_enable(dev, MT_INT_TX_DONE(idx));
return 0;
}
static void
mt7603_rx_loopback_skb(struct mt7603_dev *dev, struct sk_buff *skb)
{
__le32 *txd = (__le32 *)skb->data;
struct ieee80211_hdr *hdr;
struct ieee80211_sta *sta;
struct mt7603_sta *msta;
struct mt76_wcid *wcid;
void *priv;
int idx;
u32 val;
u8 tid;
if (skb->len < MT_TXD_SIZE + sizeof(struct ieee80211_hdr))
goto free;
val = le32_to_cpu(txd[1]);
idx = FIELD_GET(MT_TXD1_WLAN_IDX, val);
skb->priority = FIELD_GET(MT_TXD1_TID, val);
if (idx >= MT7603_WTBL_STA - 1)
goto free;
wcid = rcu_dereference(dev->mt76.wcid[idx]);
if (!wcid)
goto free;
priv = msta = container_of(wcid, struct mt7603_sta, wcid);
val = le32_to_cpu(txd[0]);
skb_set_queue_mapping(skb, FIELD_GET(MT_TXD0_Q_IDX, val));
val &= ~(MT_TXD0_P_IDX | MT_TXD0_Q_IDX);
val |= FIELD_PREP(MT_TXD0_Q_IDX, MT_TX_HW_QUEUE_MGMT);
txd[0] = cpu_to_le32(val);
sta = container_of(priv, struct ieee80211_sta, drv_priv);
hdr = (struct ieee80211_hdr *)&skb->data[MT_TXD_SIZE];
tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
ieee80211_sta_set_buffered(sta, tid, true);
spin_lock_bh(&dev->ps_lock);
__skb_queue_tail(&msta->psq, skb);
if (skb_queue_len(&msta->psq) >= 64) {
skb = __skb_dequeue(&msta->psq);
dev_kfree_skb(skb);
}
spin_unlock_bh(&dev->ps_lock);
return;
free:
dev_kfree_skb(skb);
}
void mt7603_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
struct sk_buff *skb)
{
struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
__le32 *rxd = (__le32 *)skb->data;
__le32 *end = (__le32 *)&skb->data[skb->len];
enum rx_pkt_type type;
type = FIELD_GET(MT_RXD0_PKT_TYPE, le32_to_cpu(rxd[0]));
if (q == MT_RXQ_MCU) {
if (type == PKT_TYPE_RX_EVENT)
mt76_mcu_rx_event(&dev->mt76, skb);
else
mt7603_rx_loopback_skb(dev, skb);
return;
}
switch (type) {
case PKT_TYPE_TXS:
for (rxd++; rxd + 5 <= end; rxd += 5)
mt7603_mac_add_txs(dev, rxd);
dev_kfree_skb(skb);
break;
case PKT_TYPE_RX_EVENT:
mt76_mcu_rx_event(&dev->mt76, skb);
return;
case PKT_TYPE_NORMAL:
if (mt7603_mac_fill_rx(dev, skb) == 0) {
mt76_rx(&dev->mt76, q, skb);
return;
}
/* fall through */
default:
dev_kfree_skb(skb);
break;
}
}
static int
mt7603_init_rx_queue(struct mt7603_dev *dev, struct mt76_queue *q,
int idx, int n_desc, int bufsize)
{
int err;
err = mt76_queue_alloc(dev, q, idx, n_desc, bufsize,
MT_RX_RING_BASE);
if (err < 0)
return err;
mt7603_irq_enable(dev, MT_INT_RX_DONE(idx));
return 0;
}
static int mt7603_poll_tx(struct napi_struct *napi, int budget)
{
struct mt7603_dev *dev;
int i;
dev = container_of(napi, struct mt7603_dev, mt76.tx_napi);
dev->tx_dma_check = 0;
for (i = MT_TXQ_MCU; i >= 0; i--)
mt76_queue_tx_cleanup(dev, i, false);
if (napi_complete_done(napi, 0))
mt7603_irq_enable(dev, MT_INT_TX_DONE_ALL);
for (i = MT_TXQ_MCU; i >= 0; i--)
mt76_queue_tx_cleanup(dev, i, false);
tasklet_schedule(&dev->mt76.tx_tasklet);
return 0;
}
int mt7603_dma_init(struct mt7603_dev *dev)
{
static const u8 wmm_queue_map[] = {
[IEEE80211_AC_BK] = 0,
[IEEE80211_AC_BE] = 1,
[IEEE80211_AC_VI] = 2,
[IEEE80211_AC_VO] = 3,
};
int ret;
int i;
mt76_dma_attach(&dev->mt76);
mt76_clear(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_TX_DMA_EN |
MT_WPDMA_GLO_CFG_RX_DMA_EN |
MT_WPDMA_GLO_CFG_DMA_BURST_SIZE |
MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE);
mt76_wr(dev, MT_WPDMA_RST_IDX, ~0);
mt7603_pse_client_reset(dev);
for (i = 0; i < ARRAY_SIZE(wmm_queue_map); i++) {
ret = mt7603_init_tx_queue(dev, &dev->mt76.q_tx[i],
wmm_queue_map[i],
MT_TX_RING_SIZE);
if (ret)
return ret;
}
ret = mt7603_init_tx_queue(dev, &dev->mt76.q_tx[MT_TXQ_PSD],
MT_TX_HW_QUEUE_MGMT, MT_TX_RING_SIZE);
if (ret)
return ret;
ret = mt7603_init_tx_queue(dev, &dev->mt76.q_tx[MT_TXQ_MCU],
MT_TX_HW_QUEUE_MCU, MT_MCU_RING_SIZE);
if (ret)
return ret;
ret = mt7603_init_tx_queue(dev, &dev->mt76.q_tx[MT_TXQ_BEACON],
MT_TX_HW_QUEUE_BCN, MT_MCU_RING_SIZE);
if (ret)
return ret;
ret = mt7603_init_tx_queue(dev, &dev->mt76.q_tx[MT_TXQ_CAB],
MT_TX_HW_QUEUE_BMC, MT_MCU_RING_SIZE);
if (ret)
return ret;
ret = mt7603_init_rx_queue(dev, &dev->mt76.q_rx[MT_RXQ_MCU], 1,
MT_MCU_RING_SIZE, MT_RX_BUF_SIZE);
if (ret)
return ret;
ret = mt7603_init_rx_queue(dev, &dev->mt76.q_rx[MT_RXQ_MAIN], 0,
MT7603_RX_RING_SIZE, MT_RX_BUF_SIZE);
if (ret)
return ret;
mt76_wr(dev, MT_DELAY_INT_CFG, 0);
ret = mt76_init_queues(dev);
if (ret)
return ret;
netif_tx_napi_add(&dev->mt76.napi_dev, &dev->mt76.tx_napi,
mt7603_poll_tx, NAPI_POLL_WEIGHT);
napi_enable(&dev->mt76.tx_napi);
return 0;
}
void mt7603_dma_cleanup(struct mt7603_dev *dev)
{
mt76_clear(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_TX_DMA_EN |
MT_WPDMA_GLO_CFG_RX_DMA_EN |
MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE);
tasklet_kill(&dev->mt76.tx_tasklet);
mt76_dma_cleanup(&dev->mt76);
}
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