drivers/net/wireless/mediatek/mt76/mt7996/npu.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/mediatek/mt76/mt7996/npu.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/mediatek/mt76/mt7996/npu.c
Extension
.c
Size
15643 bytes
Lines
632
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (err) {
			dev_warn(dev->mt76.dev,
				 "failed setting NPU wlan rx 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 tx desc addr\n");
		return err;
	}

	return 0;
}

static int mt7996_npu_txrx_offload_init(struct mt7996_dev *dev,
					struct airoha_npu *npu)
{
	u32 hif1_ofs = dev->hif2 ? MT_WFDMA0_PCIE1(0) - MT_WFDMA0(0) : 0;
	phys_addr_t phy_addr = dev->mt76.mmio.phy_addr;
	u32 dma_addr;
	int err;

	/* npu rx rro ring0 */
	err = mt76_npu_send_msg(npu, 0, WLAN_FUNC_SET_WAIT_DESC,
				MT7996_RX_RING_SIZE, GFP_KERNEL);
	if (err) {
		dev_warn(dev->mt76.dev,
			 "failed setting NPU wlan rx desc size\n");
		return err;
	}

	/* npu rx rro ring1 */
	err = mt76_npu_send_msg(npu, 2, WLAN_FUNC_SET_WAIT_DESC,
				MT7996_NPU_RX_RING_SIZE, GFP_KERNEL);
	if (err) {
		dev_warn(dev->mt76.dev,
			 "failed setting NPU wlan rx desc size\n");
		return err;
	}

	/* msdu pg  2GHz */
	dma_addr = phy_addr + MT_RXQ_RING_BASE(MT_RXQ_MSDU_PAGE_BAND0) + 0xa0;
	err = mt76_npu_send_msg(npu, 5, 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, 5, WLAN_FUNC_SET_WAIT_DESC,
				MT7996_NPU_RX_RING_SIZE / 4, GFP_KERNEL);
	if (err) {
		dev_warn(dev->mt76.dev,

Annotation

Implementation Notes