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// SPDX-License-Identifier: ISC
/* Copyright (C) 2023 MediaTek Inc. */
#include <linux/module.h>
#include <linux/firmware.h>
#include "mt792x.h"
#include "dma.h"
#include "trace.h"
irqreturn_t mt792x_irq_handler(int irq, void *dev_instance)
{
struct mt792x_dev *dev = dev_instance;
if (test_bit(MT76_REMOVED, &dev->mt76.phy.state))
return IRQ_NONE;
mt76_wr(dev, dev->irq_map->host_irq_enable, 0);
if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
return IRQ_NONE;
tasklet_schedule(&dev->mt76.irq_tasklet);
return IRQ_HANDLED;
}
EXPORT_SYMBOL_GPL(mt792x_irq_handler);
void mt792x_irq_tasklet(unsigned long data)
{
struct mt792x_dev *dev = (struct mt792x_dev *)data;
const struct mt792x_irq_map *irq_map = dev->irq_map;
u32 intr, mask = 0;
mt76_wr(dev, irq_map->host_irq_enable, 0);
intr = mt76_rr(dev, MT_WFDMA0_HOST_INT_STA);
intr &= dev->mt76.mmio.irqmask;
mt76_wr(dev, MT_WFDMA0_HOST_INT_STA, intr);
trace_dev_irq(&dev->mt76, intr, dev->mt76.mmio.irqmask);
mask |= intr & (irq_map->rx.data_complete_mask |
irq_map->rx.wm_complete_mask |
irq_map->rx.wm2_complete_mask);
if (intr & dev->irq_map->tx.mcu_complete_mask)
mask |= dev->irq_map->tx.mcu_complete_mask;
if (intr & MT_INT_MCU_CMD) {
u32 intr_sw;
intr_sw = mt76_rr(dev, MT_MCU_CMD);
/* ack MCU2HOST_SW_INT_STA */
mt76_wr(dev, MT_MCU_CMD, intr_sw);
if (intr_sw & MT_MCU_CMD_WAKE_RX_PCIE) {
mask |= irq_map->rx.data_complete_mask;
intr |= irq_map->rx.data_complete_mask;
}
}
mt76_set_irq_mask(&dev->mt76, irq_map->host_irq_enable, mask, 0);
if (intr & dev->irq_map->tx.all_complete_mask)
napi_schedule(&dev->mt76.tx_napi);
if (intr & irq_map->rx.wm_complete_mask)
napi_schedule(&dev->mt76.napi[MT_RXQ_MCU]);
if (intr & irq_map->rx.wm2_complete_mask)
napi_schedule(&dev->mt76.napi[MT_RXQ_MCU_WA]);
if (intr & irq_map->rx.data_complete_mask)
napi_schedule(&dev->mt76.napi[MT_RXQ_MAIN]);
}
EXPORT_SYMBOL_GPL(mt792x_irq_tasklet);
void mt792x_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q)
{
struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
const struct mt792x_irq_map *irq_map = dev->irq_map;
if (q == MT_RXQ_MAIN)
mt76_connac_irq_enable(mdev, irq_map->rx.data_complete_mask);
else if (q == MT_RXQ_MCU_WA)
mt76_connac_irq_enable(mdev, irq_map->rx.wm2_complete_mask);
else
mt76_connac_irq_enable(mdev, irq_map->rx.wm_complete_mask);
}
EXPORT_SYMBOL_GPL(mt792x_rx_poll_complete);
#define PREFETCH(base, depth) ((base) << 16 | (depth))
static void mt792x_dma_prefetch(struct mt792x_dev *dev)
{
if (is_mt7925(&dev->mt76)) {
/* rx ring */
mt76_wr(dev, MT_WFDMA0_RX_RING0_EXT_CTRL, PREFETCH(0x0000, 0x4));
mt76_wr(dev, MT_WFDMA0_RX_RING1_EXT_CTRL, PREFETCH(0x0040, 0x4));
mt76_wr(dev, MT_WFDMA0_RX_RING2_EXT_CTRL, PREFETCH(0x0080, 0x4));
mt76_wr(dev, MT_WFDMA0_RX_RING3_EXT_CTRL, PREFETCH(0x00c0, 0x4));
/* tx ring */
mt76_wr(dev, MT_WFDMA0_TX_RING0_EXT_CTRL, PREFETCH(0x0100, 0x10));
mt76_wr(dev, MT_WFDMA0_TX_RING1_EXT_CTRL, PREFETCH(0x0200, 0x10));
mt76_wr(dev, MT_WFDMA0_TX_RING2_EXT_CTRL, PREFETCH(0x0300, 0x10));
mt76_wr(dev, MT_WFDMA0_TX_RING3_EXT_CTRL, PREFETCH(0x0400, 0x10));
mt76_wr(dev, MT_WFDMA0_TX_RING15_EXT_CTRL, PREFETCH(0x0500, 0x4));
mt76_wr(dev, MT_WFDMA0_TX_RING16_EXT_CTRL, PREFETCH(0x0540, 0x4));
} else {
/* rx ring */
mt76_wr(dev, MT_WFDMA0_RX_RING0_EXT_CTRL, PREFETCH(0x0, 0x4));
mt76_wr(dev, MT_WFDMA0_RX_RING2_EXT_CTRL, PREFETCH(0x40, 0x4));
mt76_wr(dev, MT_WFDMA0_RX_RING3_EXT_CTRL, PREFETCH(0x80, 0x4));
mt76_wr(dev, MT_WFDMA0_RX_RING4_EXT_CTRL, PREFETCH(0xc0, 0x4));
mt76_wr(dev, MT_WFDMA0_RX_RING5_EXT_CTRL, PREFETCH(0x100, 0x4));
/* tx ring */
mt76_wr(dev, MT_WFDMA0_TX_RING0_EXT_CTRL, PREFETCH(0x140, 0x4));
mt76_wr(dev, MT_WFDMA0_TX_RING1_EXT_CTRL, PREFETCH(0x180, 0x4));
mt76_wr(dev, MT_WFDMA0_TX_RING2_EXT_CTRL, PREFETCH(0x1c0, 0x4));
mt76_wr(dev, MT_WFDMA0_TX_RING3_EXT_CTRL, PREFETCH(0x200, 0x4));
mt76_wr(dev, MT_WFDMA0_TX_RING4_EXT_CTRL, PREFETCH(0x240, 0x4));
mt76_wr(dev, MT_WFDMA0_TX_RING5_EXT_CTRL, PREFETCH(0x280, 0x4));
mt76_wr(dev, MT_WFDMA0_TX_RING6_EXT_CTRL, PREFETCH(0x2c0, 0x4));
mt76_wr(dev, MT_WFDMA0_TX_RING16_EXT_CTRL, PREFETCH(0x340, 0x4));
mt76_wr(dev, MT_WFDMA0_TX_RING17_EXT_CTRL, PREFETCH(0x380, 0x4));
}
}
int mt792x_dma_enable(struct mt792x_dev *dev)
{
/* configure perfetch settings */
mt792x_dma_prefetch(dev);
/* reset dma idx */
mt76_wr(dev, MT_WFDMA0_RST_DTX_PTR, ~0);
if (is_mt7925(&dev->mt76))
mt76_wr(dev, MT_WFDMA0_RST_DRX_PTR, ~0);
/* configure delay interrupt */
mt76_wr(dev, MT_WFDMA0_PRI_DLY_INT_CFG0, 0);
mt76_set(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_WB_DDONE |
MT_WFDMA0_GLO_CFG_FIFO_LITTLE_ENDIAN |
MT_WFDMA0_GLO_CFG_CLK_GAT_DIS |
MT_WFDMA0_GLO_CFG_OMIT_TX_INFO |
FIELD_PREP(MT_WFDMA0_GLO_CFG_DMA_SIZE, 3) |
MT_WFDMA0_GLO_CFG_FIFO_DIS_CHECK |
MT_WFDMA0_GLO_CFG_RX_WB_DDONE |
MT_WFDMA0_GLO_CFG_CSR_DISP_BASE_PTR_CHAIN_EN |
MT_WFDMA0_GLO_CFG_OMIT_RX_INFO_PFET2);
mt76_set(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN);
if (is_mt7925(&dev->mt76)) {
mt76_rmw(dev, MT_UWFDMA0_GLO_CFG_EXT1, BIT(28), BIT(28));
mt76_set(dev, MT_WFDMA0_INT_RX_PRI, 0x0F00);
mt76_set(dev, MT_WFDMA0_INT_TX_PRI, 0x7F00);
}
mt76_set(dev, MT_WFDMA_DUMMY_CR, MT_WFDMA_NEED_REINIT);
/* enable interrupts for TX/RX rings */
mt76_connac_irq_enable(&dev->mt76,
dev->irq_map->tx.all_complete_mask |
dev->irq_map->rx.data_complete_mask |
dev->irq_map->rx.wm2_complete_mask |
dev->irq_map->rx.wm_complete_mask |
MT_INT_MCU_CMD);
mt76_set(dev, MT_MCU2HOST_SW_INT_ENA, MT_MCU_CMD_WAKE_RX_PCIE);
return 0;
}
EXPORT_SYMBOL_GPL(mt792x_dma_enable);
static int
mt792x_dma_reset(struct mt792x_dev *dev, bool force)
{
int i, err;
err = mt792x_dma_disable(dev, force);
if (err)
return err;
/* reset hw queues */
for (i = 0; i < __MT_TXQ_MAX; i++)
mt76_queue_reset(dev, dev->mphy.q_tx[i]);
for (i = 0; i < __MT_MCUQ_MAX; i++)
mt76_queue_reset(dev, dev->mt76.q_mcu[i]);
mt76_for_each_q_rx(&dev->mt76, i)
mt76_queue_reset(dev, &dev->mt76.q_rx[i]);
mt76_tx_status_check(&dev->mt76, true);
return mt792x_dma_enable(dev);
}
int mt792x_wpdma_reset(struct mt792x_dev *dev, bool force)
{
int i, err;
/* clean up hw queues */
for (i = 0; i < ARRAY_SIZE(dev->mt76.phy.q_tx); i++)
mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[i], true);
for (i = 0; i < ARRAY_SIZE(dev->mt76.q_mcu); i++)
mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[i], true);
mt76_for_each_q_rx(&dev->mt76, i)
mt76_queue_rx_cleanup(dev, &dev->mt76.q_rx[i]);
if (force) {
err = mt792x_wfsys_reset(dev);
if (err)
return err;
}
err = mt792x_dma_reset(dev, force);
if (err)
return err;
mt76_for_each_q_rx(&dev->mt76, i)
mt76_queue_rx_reset(dev, i);
return 0;
}
EXPORT_SYMBOL_GPL(mt792x_wpdma_reset);
int mt792x_wpdma_reinit_cond(struct mt792x_dev *dev)
{
struct mt76_connac_pm *pm = &dev->pm;
int err;
/* check if the wpdma must be reinitialized */
if (mt792x_dma_need_reinit(dev)) {
/* disable interrutpts */
mt76_wr(dev, dev->irq_map->host_irq_enable, 0);
mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0);
err = mt792x_wpdma_reset(dev, false);
if (err) {
dev_err(dev->mt76.dev, "wpdma reset failed\n");
return err;
}
/* enable interrutpts */
mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
pm->stats.lp_wake++;
}
return 0;
}
EXPORT_SYMBOL_GPL(mt792x_wpdma_reinit_cond);
int mt792x_dma_disable(struct mt792x_dev *dev, bool force)
{
/* disable WFDMA0 */
mt76_clear(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN |
MT_WFDMA0_GLO_CFG_CSR_DISP_BASE_PTR_CHAIN_EN |
MT_WFDMA0_GLO_CFG_OMIT_TX_INFO |
MT_WFDMA0_GLO_CFG_OMIT_RX_INFO |
MT_WFDMA0_GLO_CFG_OMIT_RX_INFO_PFET2);
if (!mt76_poll_msec_tick(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_BUSY |
MT_WFDMA0_GLO_CFG_RX_DMA_BUSY, 0, 100, 1))
return -ETIMEDOUT;
/* disable dmashdl */
mt76_clear(dev, MT_WFDMA0_GLO_CFG_EXT0,
MT_WFDMA0_CSR_TX_DMASHDL_ENABLE);
mt76_set(dev, MT_DMASHDL_SW_CONTROL, MT_DMASHDL_DMASHDL_BYPASS);
if (force) {
/* reset */
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);
}
return 0;
}
EXPORT_SYMBOL_GPL(mt792x_dma_disable);
void mt792x_dma_cleanup(struct mt792x_dev *dev)
{
/* disable */
mt76_clear(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_EN |
MT_WFDMA0_GLO_CFG_RX_DMA_EN |
MT_WFDMA0_GLO_CFG_CSR_DISP_BASE_PTR_CHAIN_EN |
MT_WFDMA0_GLO_CFG_OMIT_TX_INFO |
MT_WFDMA0_GLO_CFG_OMIT_RX_INFO |
MT_WFDMA0_GLO_CFG_OMIT_RX_INFO_PFET2);
mt76_poll_msec_tick(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_BUSY |
MT_WFDMA0_GLO_CFG_RX_DMA_BUSY, 0, 100, 1);
/* reset */
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);
mt76_dma_cleanup(&dev->mt76);
}
EXPORT_SYMBOL_GPL(mt792x_dma_cleanup);
int mt792x_poll_tx(struct napi_struct *napi, int budget)
{
struct mt792x_dev *dev;
dev = container_of(napi, struct mt792x_dev, mt76.tx_napi);
if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) {
napi_complete(napi);
queue_work(dev->mt76.wq, &dev->pm.wake_work);
return 0;
}
mt76_connac_tx_cleanup(&dev->mt76);
if (napi_complete(napi))
mt76_connac_irq_enable(&dev->mt76,
dev->irq_map->tx.all_complete_mask);
mt76_connac_pm_unref(&dev->mphy, &dev->pm);
return 0;
}
EXPORT_SYMBOL_GPL(mt792x_poll_tx);
int mt792x_poll_rx(struct napi_struct *napi, int budget)
{
struct mt792x_dev *dev;
int done;
dev = container_of(napi->dev, struct mt792x_dev, mt76.napi_dev);
if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) {
napi_complete(napi);
queue_work(dev->mt76.wq, &dev->pm.wake_work);
return 0;
}
done = mt76_dma_rx_poll(napi, budget);
mt76_connac_pm_unref(&dev->mphy, &dev->pm);
return done;
}
EXPORT_SYMBOL_GPL(mt792x_poll_rx);
int mt792x_wfsys_reset(struct mt792x_dev *dev)
{
u32 addr = is_mt7921(&dev->mt76) ? 0x18000140 : 0x7c000140;
mt76_clear(dev, addr, WFSYS_SW_RST_B);
msleep(50);
mt76_set(dev, addr, WFSYS_SW_RST_B);
if (!__mt76_poll_msec(&dev->mt76, addr, WFSYS_SW_INIT_DONE,
WFSYS_SW_INIT_DONE, 500))
return -ETIMEDOUT;
return 0;
}
EXPORT_SYMBOL_GPL(mt792x_wfsys_reset);
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