Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 344 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_dma.c b/drivers/net/wireless/mediatek/mt76/mt792x_dma.c
new file mode 100644
index 0000000000..a3dbd3865b
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt792x_dma.c
@@ -0,0 +1,344 @@
+// 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;
+
+	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)
+{
+	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));
+
+	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);
+
+	/* 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 */
+	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);
+