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path: root/drivers/net/wireless/mediatek/mt76/mt7996/npu.c
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Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7996/npu.c')
-rw-r--r--drivers/net/wireless/mediatek/mt76/mt7996/npu.c352
1 files changed, 352 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/npu.c b/drivers/net/wireless/mediatek/mt76/mt7996/npu.c
new file mode 100644
index 000000000000..29bb735da4cb
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/npu.c
@@ -0,0 +1,352 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2025 AIROHA Inc
+ * Author: Lorenzo Bianconi <lorenzo@kernel.org>
+ */
+#include <linux/kernel.h>
+#include <linux/soc/airoha/airoha_offload.h>
+
+#include "mt7996.h"
+
+static int mt7996_npu_offload_init(struct mt7996_dev *dev,
+ struct airoha_npu *npu)
+{
+ phys_addr_t phy_addr = dev->mt76.mmio.phy_addr;
+ u32 val, hif1_ofs = 0, dma_addr;
+ int i, err;
+
+ err = mt76_npu_get_msg(npu, 0, WLAN_FUNC_GET_WAIT_NPU_VERSION,
+ &val, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev, "failed getting NPU fw version\n");
+ return err;
+ }
+
+ dev_info(dev->mt76.dev, "NPU version: %0d.%d\n",
+ (val >> 16) & 0xffff, val & 0xffff);
+
+ err = mt76_npu_send_msg(npu, 0, WLAN_FUNC_SET_WAIT_PCIE_PORT_TYPE,
+ dev->mt76.mmio.npu_type, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan PCIe port type\n");
+ return err;
+ }
+
+ if (dev->hif2)
+ hif1_ofs = MT_WFDMA0_PCIE1(0) - MT_WFDMA0(0);
+
+ for (i = MT_BAND0; i < MT_BAND2; i++) {
+ dma_addr = phy_addr;
+ if (i)
+ dma_addr += MT_RXQ_RING_BASE(MT_RXQ_RRO_BAND1) + 0x90 +
+ hif1_ofs;
+ else
+ dma_addr += MT_RXQ_RING_BASE(MT_RXQ_RRO_BAND0) + 0x80;
+
+ err = mt76_npu_send_msg(npu, i, WLAN_FUNC_SET_WAIT_PCIE_ADDR,
+ dma_addr, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan PCIe desc addr\n");
+ return err;
+ }
+
+ err = mt76_npu_send_msg(npu, i, WLAN_FUNC_SET_WAIT_DESC,
+ MT7996_RX_RING_SIZE, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan PCIe desc size\n");
+ return err;
+ }
+
+ dma_addr = phy_addr;
+ if (i)
+ dma_addr += MT_TXQ_RING_BASE(0) + 0x150 + hif1_ofs;
+ else
+ dma_addr += MT_TXQ_RING_BASE(0) + 0x120;
+
+ err = mt76_npu_send_msg(npu, i,
+ WLAN_FUNC_SET_WAIT_TX_RING_PCIE_ADDR,
+ dma_addr, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan tx desc addr\n");
+ return err;
+ }
+ }
+
+ err = mt76_npu_send_msg(npu, 9, WLAN_FUNC_SET_WAIT_PCIE_ADDR,
+ phy_addr + MT_RXQ_RRO_AP_RING_BASE,
+ GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan rxdmad_c addr\n");
+ return err;
+ }
+
+ err = mt76_npu_send_msg(npu, 9, WLAN_FUNC_SET_WAIT_DESC,
+ MT7996_RX_RING_SIZE, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan rxdmad_c desc size\n");
+ return err;
+ }
+
+ err = mt76_npu_send_msg(npu, 2, WLAN_FUNC_SET_WAIT_TX_RING_PCIE_ADDR,
+ phy_addr + MT_RRO_ACK_SN_CTRL, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan rro_ack_sn desc addr\n");
+ return err;
+ }
+
+ err = mt76_npu_send_msg(npu, 0, WLAN_FUNC_SET_WAIT_TOKEN_ID_SIZE,
+ MT7996_HW_TOKEN_SIZE, GFP_KERNEL);
+ if (err)
+ return err;
+
+ dev->mt76.token_start = MT7996_HW_TOKEN_SIZE;
+
+ return 0;
+}
+
+static int mt7996_npu_rxd_init(struct mt7996_dev *dev, struct airoha_npu *npu)
+{
+ u32 val;
+ int err;
+
+ err = mt76_npu_get_msg(npu, 0, WLAN_FUNC_GET_WAIT_RXDESC_BASE,
+ &val, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed retriving NPU wlan rx ring0 addr\n");
+ return err;
+ }
+ writel(val, &dev->mt76.q_rx[MT_RXQ_RRO_BAND0].regs->desc_base);
+
+ err = mt76_npu_get_msg(npu, 1, WLAN_FUNC_GET_WAIT_RXDESC_BASE,
+ &val, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed retriving NPU wlan rx ring1 addr\n");
+ return err;
+ }
+ writel(val, &dev->mt76.q_rx[MT_RXQ_RRO_BAND1].regs->desc_base);
+
+ err = mt76_npu_get_msg(npu, 9, WLAN_FUNC_GET_WAIT_RXDESC_BASE,
+ &val, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed retriving NPU wlan rxdmad_c ring addr\n");
+ return err;
+ }
+ writel(val, &dev->mt76.q_rx[MT_RXQ_RRO_RXDMAD_C].regs->desc_base);
+
+ return 0;
+}
+
+static int mt7996_npu_txd_init(struct mt7996_dev *dev, struct airoha_npu *npu)
+{
+ int i, err;
+
+ for (i = MT_BAND0; i < MT_BAND2; i++) {
+ dma_addr_t dma_addr;
+ u32 val;
+
+ err = mt76_npu_get_msg(npu, i + 5,
+ WLAN_FUNC_GET_WAIT_RXDESC_BASE,
+ &val, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed retriving NPU wlan tx ring addr\n");
+ return err;
+ }
+ writel(val, &dev->mt76.phys[i]->q_tx[0]->regs->desc_base);
+
+ if (!dmam_alloc_coherent(dev->mt76.dma_dev,
+ 256 * MT7996_TX_RING_SIZE,
+ &dma_addr, GFP_KERNEL))
+ return -ENOMEM;
+
+ err = mt76_npu_send_msg(npu, i,
+ WLAN_FUNC_SET_WAIT_TX_BUF_SPACE_HW_BASE,
+ dma_addr, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan queue buf addr\n");
+ return err;
+ }
+
+ if (!dmam_alloc_coherent(dev->mt76.dma_dev,
+ 256 * MT7996_TX_RING_SIZE,
+ &dma_addr, GFP_KERNEL))
+ return -ENOMEM;
+
+ err = mt76_npu_send_msg(npu, i + 5,
+ WLAN_FUNC_SET_WAIT_TX_BUF_SPACE_HW_BASE,
+ dma_addr, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan tx buf addr\n");
+ return err;
+ }
+
+ if (!dmam_alloc_coherent(dev->mt76.dma_dev, 256 * 1024,
+ &dma_addr, GFP_KERNEL))
+ return -ENOMEM;
+
+ err = mt76_npu_send_msg(npu, i + 10,
+ WLAN_FUNC_SET_WAIT_TX_BUF_SPACE_HW_BASE,
+ dma_addr, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan tx buf base\n");
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static int mt7996_npu_rx_event_init(struct mt7996_dev *dev,
+ struct airoha_npu *npu)
+{
+ struct mt76_queue *q = &dev->mt76.q_rx[MT_RXQ_MAIN_WA];
+ phys_addr_t phy_addr = dev->mt76.mmio.phy_addr;
+ int err;
+
+ err = mt76_npu_send_msg(npu, 0,
+ WLAN_FUNC_SET_WAIT_RX_RING_FOR_TXDONE_HW_BASE,
+ q->desc_dma, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan tx-done ring\n");
+ return err;
+ }
+
+ err = mt76_npu_send_msg(npu, 10, WLAN_FUNC_SET_WAIT_DESC,
+ MT7996_RX_MCU_RING_SIZE, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan descriptors\n");
+ return err;
+ }
+
+ phy_addr += MT_RXQ_RING_BASE(MT_RXQ_MAIN_WA) + 0x20;
+ err = mt76_npu_send_msg(npu, 10, WLAN_FUNC_SET_WAIT_PCIE_ADDR,
+ phy_addr, GFP_KERNEL);
+ if (err)
+ dev_warn(dev->mt76.dev,
+ "failed setting NPU wlan rx pcie address\n");
+ return err;
+}
+
+static int mt7996_npu_tx_done_init(struct mt7996_dev *dev,
+ struct airoha_npu *npu)
+{
+ int err;
+
+ err = mt76_npu_send_msg(npu, 2, WLAN_FUNC_SET_WAIT_INODE_TXRX_REG_ADDR,
+ 0, GFP_KERNEL);
+ if (err) {
+ dev_warn(dev->mt76.dev, "failed setting NPU wlan txrx addr2\n");
+ return err;
+ }
+
+ err = mt76_npu_send_msg(npu, 7, WLAN_FUNC_SET_WAIT_INODE_TXRX_REG_ADDR,
+ 0, GFP_KERNEL);
+ if (err)
+ dev_warn(dev->mt76.dev, "failed setting NPU wlan txrx addr7\n");
+
+ return err;
+}
+
+int mt7996_npu_rx_queues_init(struct mt7996_dev *dev)
+{
+ int err;
+
+ if (!mt76_npu_device_active(&dev->mt76))
+ return 0;
+
+ err = mt76_npu_rx_queue_init(&dev->mt76,
+ &dev->mt76.q_rx[MT_RXQ_NPU0]);
+ if (err)
+ return err;
+
+ return mt76_npu_rx_queue_init(&dev->mt76,
+ &dev->mt76.q_rx[MT_RXQ_NPU1]);
+}
+
+int mt7996_npu_hw_init(struct mt7996_dev *dev)
+{
+ struct airoha_npu *npu;
+ int i, err = 0;
+
+ mutex_lock(&dev->mt76.mutex);
+
+ npu = rcu_dereference_protected(dev->mt76.mmio.npu, &dev->mt76.mutex);
+ if (!npu)
+ goto unlock;
+
+ err = mt7996_npu_offload_init(dev, npu);
+ if (err)
+ goto unlock;
+
+ err = mt7996_npu_rxd_init(dev, npu);
+ if (err)
+ goto unlock;
+
+ err = mt7996_npu_txd_init(dev, npu);
+ if (err)
+ goto unlock;
+
+ err = mt7996_npu_rx_event_init(dev, npu);
+ if (err)
+ goto unlock;
+
+ err = mt7996_npu_tx_done_init(dev, npu);
+ if (err)
+ goto unlock;
+
+ for (i = MT_RXQ_NPU0; i <= MT_RXQ_NPU1; i++)
+ airoha_npu_wlan_enable_irq(npu, i - MT_RXQ_NPU0);
+unlock:
+ mutex_unlock(&dev->mt76.mutex);
+
+ return err;
+}
+
+int mt7996_npu_hw_stop(struct mt7996_dev *dev)
+{
+ struct airoha_npu *npu;
+ int i, err;
+ u32 info;
+
+ npu = rcu_dereference_protected(dev->mt76.mmio.npu, &dev->mt76.mutex);
+ if (!npu)
+ return 0;
+
+ err = mt76_npu_send_msg(npu, 4, WLAN_FUNC_SET_WAIT_INODE_TXRX_REG_ADDR,
+ 0, GFP_KERNEL);
+ if (err)
+ return err;
+
+ for (i = 0; i < 10; i++) {
+ err = mt76_npu_get_msg(npu, 3, WLAN_FUNC_GET_WAIT_NPU_INFO,
+ &info, GFP_KERNEL);
+ if (err)
+ continue;
+
+ if (info) {
+ err = -ETIMEDOUT;
+ continue;
+ }
+ }
+
+ if (!err)
+ err = mt76_npu_send_msg(npu, 6,
+ WLAN_FUNC_SET_WAIT_INODE_TXRX_REG_ADDR,
+ 0, GFP_KERNEL);
+ return err;
+}
generated by cgit v1.2.3 (git 2.46.0) at 2025-12-07 17:15:13 +0000