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// SPDX-License-Identifier: ISC
/* Copyright (C) 2020 MediaTek Inc. */
#include "mt7915.h"
#include "../dma.h"
#include "mac.h"
static int
mt7915_init_tx_queues(struct mt7915_dev *dev, int n_desc)
{
struct mt76_sw_queue *q;
struct mt76_queue *hwq;
int err, i;
hwq = devm_kzalloc(dev->mt76.dev, sizeof(*hwq), GFP_KERNEL);
if (!hwq)
return -ENOMEM;
err = mt76_queue_alloc(dev, hwq, MT7915_TXQ_BAND0, n_desc, 0,
MT_TX_RING_BASE);
if (err < 0)
return err;
for (i = 0; i < MT_TXQ_MCU; i++) {
q = &dev->mt76.q_tx[i];
INIT_LIST_HEAD(&q->swq);
q->q = hwq;
}
return 0;
}
static int
mt7915_init_mcu_queue(struct mt7915_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;
return 0;
}
void mt7915_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
struct sk_buff *skb)
{
struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76);
__le32 *rxd = (__le32 *)skb->data;
enum rx_pkt_type type;
type = FIELD_GET(MT_RXD0_PKT_TYPE, le32_to_cpu(rxd[0]));
switch (type) {
case PKT_TYPE_TXRX_NOTIFY:
mt7915_mac_tx_free(dev, skb);
break;
case PKT_TYPE_RX_EVENT:
mt7915_mcu_rx_event(dev, skb);
break;
case PKT_TYPE_NORMAL:
if (!mt7915_mac_fill_rx(dev, skb)) {
mt76_rx(&dev->mt76, q, skb);
return;
}
/* fall through */
default:
dev_kfree_skb(skb);
break;
}
}
static int mt7915_poll_tx(struct napi_struct *napi, int budget)
{
static const u8 queue_map[] = {
MT_TXQ_MCU,
MT_TXQ_MCU_WA,
MT_TXQ_BE
};
struct mt7915_dev *dev;
int i;
dev = container_of(napi, struct mt7915_dev, mt76.tx_napi);
for (i = 0; i < ARRAY_SIZE(queue_map); i++)
mt76_queue_tx_cleanup(dev, queue_map[i], false);
if (napi_complete_done(napi, 0))
mt7915_irq_enable(dev, MT_INT_TX_DONE_ALL);
for (i = 0; i < ARRAY_SIZE(queue_map); i++)
mt76_queue_tx_cleanup(dev, queue_map[i], false);
mt7915_mac_sta_poll(dev);
tasklet_schedule(&dev->mt76.tx_tasklet);
return 0;
}
void mt7915_dma_prefetch(struct mt7915_dev *dev)
{
#define PREFETCH(base, depth) ((base) << 16 | (depth))
mt76_wr(dev, MT_WFDMA0_RX_RING0_EXT_CTRL, PREFETCH(0x0, 0x4));
mt76_wr(dev, MT_WFDMA0_RX_RING1_EXT_CTRL, PREFETCH(0x40, 0x4));
mt76_wr(dev, MT_WFDMA0_RX_RING2_EXT_CTRL, PREFETCH(0x80, 0x0));
mt76_wr(dev, MT_WFDMA1_TX_RING0_EXT_CTRL, PREFETCH(0x80, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING1_EXT_CTRL, PREFETCH(0xc0, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING2_EXT_CTRL, PREFETCH(0x100, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING3_EXT_CTRL, PREFETCH(0x140, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING4_EXT_CTRL, PREFETCH(0x180, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING5_EXT_CTRL, PREFETCH(0x1c0, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING6_EXT_CTRL, PREFETCH(0x200, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING7_EXT_CTRL, PREFETCH(0x240, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING16_EXT_CTRL, PREFETCH(0x280, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING17_EXT_CTRL, PREFETCH(0x2c0, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING18_EXT_CTRL, PREFETCH(0x300, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING19_EXT_CTRL, PREFETCH(0x340, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING20_EXT_CTRL, PREFETCH(0x380, 0x4));
mt76_wr(dev, MT_WFDMA1_TX_RING21_EXT_CTRL, PREFETCH(0x3c0, 0x0));
mt76_wr(dev, MT_WFDMA1_RX_RING0_EXT_CTRL, PREFETCH(0x3c0, 0x4));
mt76_wr(dev, MT_WFDMA1_RX_RING1_EXT_CTRL, PREFETCH(0x400, 0x4));
mt76_wr(dev, MT_WFDMA1_RX_RING2_EXT_CTRL, PREFETCH(0x440, 0x4));
mt76_wr(dev, MT_WFDMA1_RX_RING3_EXT_CTRL, PREFETCH(0x480, 0x0));
}
int mt7915_dma_init(struct mt7915_dev *dev)
{
/* Increase buffer size to receive large VHT/HE MPDUs */
int rx_buf_size = MT_RX_BUF_SIZE * 2;
int ret;
mt76_dma_attach(&dev->mt76);
/* configure global setting */
mt76_set(dev, MT_WFDMA1_GLO_CFG,
MT_WFDMA1_GLO_CFG_OMIT_TX_INFO |
MT_WFDMA1_GLO_CFG_OMIT_RX_INFO);
/* configure perfetch settings */
mt7915_dma_prefetch(dev);
/* reset dma idx */
mt76_wr(dev, MT_WFDMA0_RST_DTX_PTR, ~0);
mt76_wr(dev, MT_WFDMA1_RST_DTX_PTR, ~0);
/* configure delay interrupt */
mt76_wr(dev, MT_WFDMA0_PRI_DLY_INT_CFG0, 0);
mt76_wr(dev, MT_WFDMA1_PRI_DLY_INT_CFG0, 0);
/* init tx queue */
ret = mt7915_init_tx_queues(dev, MT7915_TX_RING_SIZE);
if (ret)
return ret;
/* command to WM */
ret = mt7915_init_mcu_queue(dev, &dev->mt76.q_tx[MT_TXQ_MCU],
MT7915_TXQ_MCU_WM,
MT7915_TX_MCU_RING_SIZE);
if (ret)
return ret;
/* command to WA */
ret = mt7915_init_mcu_queue(dev, &dev->mt76.q_tx[MT_TXQ_MCU_WA],
MT7915_TXQ_MCU_WA,
MT7915_TX_MCU_RING_SIZE);
if (ret)
return ret;
/* firmware download */
ret = mt7915_init_mcu_queue(dev, &dev->mt76.q_tx[MT_TXQ_FWDL],
MT7915_TXQ_FWDL,
MT7915_TX_FWDL_RING_SIZE);
if (ret)
return ret;
/* event from WM */
ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MCU],
MT7915_RXQ_MCU_WM, MT7915_RX_MCU_RING_SIZE,
rx_buf_size, MT_RX_EVENT_RING_BASE);
if (ret)
return ret;
/* event from WA */
ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MCU_WA],
MT7915_RXQ_MCU_WA, MT7915_RX_MCU_RING_SIZE,
rx_buf_size, MT_RX_EVENT_RING_BASE);
if (ret)
return ret;
/* rx data */
ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MAIN], 0,
MT7915_RX_RING_SIZE, rx_buf_size,
MT_RX_DATA_RING_BASE);
if (ret)
return ret;
ret = mt76_init_queues(dev);
if (ret < 0)
return ret;
netif_tx_napi_add(&dev->mt76.napi_dev, &dev->mt76.tx_napi,
mt7915_poll_tx, NAPI_POLL_WEIGHT);
napi_enable(&dev->mt76.tx_napi);
/* hif wait WFDMA idle */
mt76_set(dev, MT_WFDMA0_BUSY_ENA,
MT_WFDMA0_BUSY_ENA_TX_FIFO0 |
MT_WFDMA0_BUSY_ENA_TX_FIFO1 |
MT_WFDMA0_BUSY_ENA_RX_FIFO);
mt76_set(dev, MT_WFDMA1_BUSY_ENA,
MT_WFDMA1_BUSY_ENA_TX_FIFO0 |
MT_WFDMA1_BUSY_ENA_TX_FIFO1 |
MT_WFDMA1_BUSY_ENA_RX_FIFO);
mt76_set(dev, MT_WFDMA0_PCIE1_BUSY_ENA,
MT_WFDMA0_PCIE1_BUSY_ENA_TX_FIFO0 |
MT_WFDMA0_PCIE1_BUSY_ENA_TX_FIFO1 |
MT_WFDMA0_PCIE1_BUSY_ENA_RX_FIFO);
mt76_set(dev, MT_WFDMA1_PCIE1_BUSY_ENA,
MT_WFDMA1_PCIE1_BUSY_ENA_TX_FIFO0 |
MT_WFDMA1_PCIE1_BUSY_ENA_TX_FIFO1 |
MT_WFDMA1_PCIE1_BUSY_ENA_RX_FIFO);
mt76_poll(dev, MT_WFDMA_EXT_CSR_HIF_MISC,
MT_WFDMA_EXT_CSR_HIF_MISC_BUSY, 0, 1000);
/* set WFDMA Tx/Rx */
mt76_set(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN);
mt76_set(dev, MT_WFDMA1_GLO_CFG,
MT_WFDMA1_GLO_CFG_TX_DMA_EN | MT_WFDMA1_GLO_CFG_RX_DMA_EN);
/* enable interrupts for TX/RX rings */
mt7915_irq_enable(dev, MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL |
MT_INT_MCU_CMD);
return 0;
}
void mt7915_dma_cleanup(struct mt7915_dev *dev)
{
/* disable */
mt76_clear(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_EN |
MT_WFDMA0_GLO_CFG_RX_DMA_EN);
mt76_clear(dev, MT_WFDMA1_GLO_CFG,
MT_WFDMA1_GLO_CFG_TX_DMA_EN |
MT_WFDMA1_GLO_CFG_RX_DMA_EN);
/* reset */
mt76_clear(dev, MT_WFDMA1_RST,
MT_WFDMA1_RST_DMASHDL_ALL_RST |
MT_WFDMA1_RST_LOGIC_RST);
mt76_set(dev, MT_WFDMA1_RST,
MT_WFDMA1_RST_DMASHDL_ALL_RST |
MT_WFDMA1_RST_LOGIC_RST);
mt76_clear(dev, MT_WFDMA0_RST,
MT_WFDMA0_RST_DMASHDL_ALL_RST |
MT_WFDMA0_RST_LOGIC_RST);
mt76_set(dev, MT_WFDMA0_RST,
MT_WFDMA0_RST_DMASHDL_ALL_RST |
MT_WFDMA0_RST_LOGIC_RST);
tasklet_kill(&dev->mt76.tx_tasklet);
mt76_dma_cleanup(&dev->mt76);
}
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