diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/wed.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/wed.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/wed.c b/drivers/net/wireless/mediatek/mt76/wed.c new file mode 100644 index 0000000000..f89e453755 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/wed.c @@ -0,0 +1,213 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright (C) 2023 Lorenzo Bianconi <lorenzo@kernel.org> + */ + +#include "mt76.h" +#include "dma.h" + +void mt76_wed_release_rx_buf(struct mtk_wed_device *wed) +{ + struct mt76_dev *dev = container_of(wed, struct mt76_dev, mmio.wed); + int i; + + for (i = 0; i < dev->rx_token_size; i++) { + struct mt76_txwi_cache *t; + + t = mt76_rx_token_release(dev, i); + if (!t || !t->ptr) + continue; + + mt76_put_page_pool_buf(t->ptr, false); + t->ptr = NULL; + + mt76_put_rxwi(dev, t); + } + + mt76_free_pending_rxwi(dev); +} +EXPORT_SYMBOL_GPL(mt76_wed_release_rx_buf); + +#ifdef CONFIG_NET_MEDIATEK_SOC_WED +u32 mt76_wed_init_rx_buf(struct mtk_wed_device *wed, int size) +{ + struct mt76_dev *dev = container_of(wed, struct mt76_dev, mmio.wed); + struct mtk_wed_bm_desc *desc = wed->rx_buf_ring.desc; + struct mt76_queue *q = &dev->q_rx[MT_RXQ_MAIN]; + int i, len = SKB_WITH_OVERHEAD(q->buf_size); + struct mt76_txwi_cache *t = NULL; + + for (i = 0; i < size; i++) { + enum dma_data_direction dir; + dma_addr_t addr; + u32 offset; + int token; + void *buf; + + t = mt76_get_rxwi(dev); + if (!t) + goto unmap; + + buf = mt76_get_page_pool_buf(q, &offset, q->buf_size); + if (!buf) + goto unmap; + + addr = page_pool_get_dma_addr(virt_to_head_page(buf)) + offset; + dir = page_pool_get_dma_dir(q->page_pool); + dma_sync_single_for_device(dev->dma_dev, addr, len, dir); + + desc->buf0 = cpu_to_le32(addr); + token = mt76_rx_token_consume(dev, buf, t, addr); + if (token < 0) { + mt76_put_page_pool_buf(buf, false); + goto unmap; + } + + token = FIELD_PREP(MT_DMA_CTL_TOKEN, token); +#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT + token |= FIELD_PREP(MT_DMA_CTL_SDP0_H, addr >> 32); +#endif + desc->token |= cpu_to_le32(token); + desc++; + } + + return 0; + +unmap: + if (t) + mt76_put_rxwi(dev, t); + mt76_wed_release_rx_buf(wed); + + return -ENOMEM; +} +EXPORT_SYMBOL_GPL(mt76_wed_init_rx_buf); + +int mt76_wed_offload_enable(struct mtk_wed_device *wed) +{ + struct mt76_dev *dev = container_of(wed, struct mt76_dev, mmio.wed); + + spin_lock_bh(&dev->token_lock); + dev->token_size = wed->wlan.token_start; + spin_unlock_bh(&dev->token_lock); + + return !wait_event_timeout(dev->tx_wait, !dev->wed_token_count, HZ); +} +EXPORT_SYMBOL_GPL(mt76_wed_offload_enable); + +int mt76_wed_dma_setup(struct mt76_dev *dev, struct mt76_queue *q, bool reset) +{ + int ret = 0, type, ring; + u16 flags; + + if (!q || !q->ndesc) + return -EINVAL; + + flags = q->flags; + if (!q->wed || !mtk_wed_device_active(q->wed)) + q->flags &= ~MT_QFLAG_WED; + + if (!(q->flags & MT_QFLAG_WED)) + return 0; + + type = FIELD_GET(MT_QFLAG_WED_TYPE, q->flags); + ring = FIELD_GET(MT_QFLAG_WED_RING, q->flags); + + switch (type) { + case MT76_WED_Q_TX: + ret = mtk_wed_device_tx_ring_setup(q->wed, ring, q->regs, + reset); + if (!ret) + q->wed_regs = q->wed->tx_ring[ring].reg_base; + break; + case MT76_WED_Q_TXFREE: + /* WED txfree queue needs ring to be initialized before setup */ + q->flags = 0; + mt76_dma_queue_reset(dev, q); + mt76_dma_rx_fill(dev, q, false); + + ret = mtk_wed_device_txfree_ring_setup(q->wed, q->regs); + if (!ret) + q->wed_regs = q->wed->txfree_ring.reg_base; + break; + case MT76_WED_Q_RX: + ret = mtk_wed_device_rx_ring_setup(q->wed, ring, q->regs, + reset); + if (!ret) + q->wed_regs = q->wed->rx_ring[ring].reg_base; + break; + case MT76_WED_RRO_Q_DATA: + q->flags &= ~MT_QFLAG_WED; + __mt76_dma_queue_reset(dev, q, false); + mtk_wed_device_rro_rx_ring_setup(q->wed, ring, q->regs); + q->head = q->ndesc - 1; + q->queued = q->head; + break; + case MT76_WED_RRO_Q_MSDU_PG: + q->flags &= ~MT_QFLAG_WED; + __mt76_dma_queue_reset(dev, q, false); + mtk_wed_device_msdu_pg_rx_ring_setup(q->wed, ring, q->regs); + q->head = q->ndesc - 1; + q->queued = q->head; + break; + case MT76_WED_RRO_Q_IND: + q->flags &= ~MT_QFLAG_WED; + mt76_dma_queue_reset(dev, q); + mt76_dma_rx_fill(dev, q, false); + mtk_wed_device_ind_rx_ring_setup(q->wed, q->regs); + break; + default: + ret = -EINVAL; + break; + } + q->flags = flags; + + return ret; +} +EXPORT_SYMBOL_GPL(mt76_wed_dma_setup); +#endif /*CONFIG_NET_MEDIATEK_SOC_WED */ + +void mt76_wed_offload_disable(struct mtk_wed_device *wed) +{ + struct mt76_dev *dev = container_of(wed, struct mt76_dev, mmio.wed); + + spin_lock_bh(&dev->token_lock); + dev->token_size = dev->drv->token_size; + spin_unlock_bh(&dev->token_lock); +} +EXPORT_SYMBOL_GPL(mt76_wed_offload_disable); + +void mt76_wed_reset_complete(struct mtk_wed_device *wed) +{ + struct mt76_dev *dev = container_of(wed, struct mt76_dev, mmio.wed); + + complete(&dev->mmio.wed_reset_complete); +} +EXPORT_SYMBOL_GPL(mt76_wed_reset_complete); + +int mt76_wed_net_setup_tc(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct net_device *netdev, enum tc_setup_type type, + void *type_data) +{ + struct mt76_phy *phy = hw->priv; + struct mtk_wed_device *wed = &phy->dev->mmio.wed; + + if (!mtk_wed_device_active(wed)) + return -EOPNOTSUPP; + + return mtk_wed_device_setup_tc(wed, netdev, type, type_data); +} +EXPORT_SYMBOL_GPL(mt76_wed_net_setup_tc); + +void mt76_wed_dma_reset(struct mt76_dev *dev) +{ + struct mt76_mmio *mmio = &dev->mmio; + + if (!test_bit(MT76_STATE_WED_RESET, &dev->phy.state)) + return; + + complete(&mmio->wed_reset); + + if (!wait_for_completion_timeout(&mmio->wed_reset_complete, 3 * HZ)) + dev_err(dev->dev, "wed reset complete timeout\n"); +} +EXPORT_SYMBOL_GPL(mt76_wed_dma_reset); |