From: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
Introduce mt7921_dma_enable and mt7921_dma_disable utilities routine in
order for code reusing between mt7921_dma_reset and mt7921_dma_init.
This is a preliminary patch to reset dma during device driver_own
request.
Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
---
.../net/wireless/mediatek/mt76/mt7921/dma.c | 108 ++++++------------
1 file changed, 35 insertions(+), 73 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/dma.c b/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
index 4aad355f8394..8c556ff3ae93 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
@@ -198,18 +198,8 @@ static u32 mt7921_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
return dev->bus_ops->rmw(mdev, addr, mask, val);
}
-static int mt7921_dmashdl_disabled(struct mt7921_dev *dev)
+static int mt7921_dma_disable(struct mt7921_dev *dev, bool force)
{
- 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);
-
- return 0;
-}
-
-static int mt7921_dma_reset(struct mt7921_dev *dev, bool force)
-{
- int i;
-
if (force) {
/* reset */
mt76_clear(dev, MT_WFDMA0_RST,
@@ -221,6 +211,11 @@ static int mt7921_dma_reset(struct mt7921_dev *dev, bool force)
MT_WFDMA0_RST_LOGIC_RST);
}
+ /* 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);
+
/* disable WFDMA0 */
mt76_clear(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN |
@@ -234,18 +229,11 @@ static int mt7921_dma_reset(struct mt7921_dev *dev, bool force)
MT_WFDMA0_GLO_CFG_RX_DMA_BUSY, 0, 1000))
return -ETIMEDOUT;
- /* 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, NULL, true);
+ return 0;
+}
+static int mt7921_dma_enable(struct mt7921_dev *dev)
+{
/* configure perfetch settings */
mt7921_dma_prefetch(dev);
@@ -272,11 +260,33 @@ static int mt7921_dma_reset(struct mt7921_dev *dev, bool force)
mt7921_irq_enable(dev,
MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL |
MT_INT_MCU_CMD);
- mt76_set(dev, MT_MCU2HOST_SW_INT_ENA, MT_MCU_CMD_WAKE_RX_PCIE);
return 0;
}
+static int mt7921_dma_reset(struct mt7921_dev *dev, bool force)
+{
+ int i, err;
+
+ err = mt7921_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, NULL, true);
+
+ return mt7921_dma_enable(dev);
+}
+
int mt7921_wfsys_reset(struct mt7921_dev *dev)
{
mt76_set(dev, 0x70002600, BIT(0));
@@ -339,32 +349,10 @@ int mt7921_dma_init(struct mt7921_dev *dev)
mt76_dma_attach(&dev->mt76);
- /* 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);
-
- ret = mt7921_dmashdl_disabled(dev);
+ ret = mt7921_dma_disable(dev, true);
if (ret)
return ret;
- /* 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);
-
- mt76_poll(dev, MT_WFDMA0_GLO_CFG,
- MT_WFDMA0_GLO_CFG_TX_DMA_BUSY |
- MT_WFDMA0_GLO_CFG_RX_DMA_BUSY, 0, 1000);
-
/* init tx queue */
ret = mt7921_init_tx_queues(&dev->phy, MT7921_TXQ_BAND0,
MT7921_TX_RING_SIZE);
@@ -416,33 +404,7 @@ int mt7921_dma_init(struct mt7921_dev *dev)
mt7921_poll_tx, NAPI_POLL_WEIGHT);
napi_enable(&dev->mt76.tx_napi);
- /* configure perfetch settings */
- mt7921_dma_prefetch(dev);
-
- /* reset dma idx */
- mt76_wr(dev, MT_WFDMA0_RST_DTX_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 |
- 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);
-
- mt76_set(dev, MT_WFDMA_DUMMY_CR, MT_WFDMA_NEED_REINIT);
-
- /* enable interrupts for TX/RX rings */
- mt7921_irq_enable(dev, MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL |
- MT_INT_MCU_CMD);
-
- return 0;
+ return mt7921_dma_enable(dev);
}
void mt7921_dma_cleanup(struct mt7921_dev *dev)
--
2.25.1
