drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c

File Facts

System

Linux kernel

Corpus path

drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c

Extension

.c

Size

17109 bytes

Lines

620

Domain

Driver Families

Bucket

drivers/net

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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.

• 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.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/clk-provider.h
• linux/pci.h
• linux/dmi.h
• linux/device.h
• linux/of_irq.h
• stmmac.h
• stmmac_libpci.h
• dwmac_dma.h
• dwmac1000.h

Detected Declarations

• struct loongson_data
• struct stmmac_pci_info
• function loongson_default_data
• function loongson_gmac_data
• function loongson_gnet_fix_speed
• function loongson_gnet_data
• function loongson_dwmac_dma_init_channel
• function loongson_dwmac_dma_interrupt
• function loongson_dwmac_setup
• function loongson_dwmac_msi_config
• function loongson_dwmac_msi_clear
• function loongson_dwmac_dt_config
• function loongson_dwmac_dt_clear
• function loongson_dwmac_acpi_config
• function loongson_dwmac_fix_reset
• function loongson_dwmac_probe
• function loongson_dwmac_remove

Annotated Snippet

static struct pci_driver loongson_dwmac_driver = {
	.name = DRIVER_NAME,
	.id_table = loongson_dwmac_id_table,
	.probe = loongson_dwmac_probe,
	.remove = loongson_dwmac_remove,
	.driver = {
		.pm = &stmmac_simple_pm_ops,
	},
};

module_pci_driver(loongson_dwmac_driver);

MODULE_DESCRIPTION("Loongson DWMAC PCI driver");
MODULE_AUTHOR("Qing Zhang <zhangqing@loongson.cn>");
MODULE_AUTHOR("Yanteng Si <siyanteng@loongson.cn>");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/clk-provider.h`, `linux/pci.h`, `linux/dmi.h`, `linux/device.h`, `linux/of_irq.h`, `stmmac.h`, `stmmac_libpci.h`, `dwmac_dma.h`.
• Detected declarations: `struct loongson_data`, `struct stmmac_pci_info`, `function loongson_default_data`, `function loongson_gmac_data`, `function loongson_gnet_fix_speed`, `function loongson_gnet_data`, `function loongson_dwmac_dma_init_channel`, `function loongson_dwmac_dma_interrupt`, `function loongson_dwmac_setup`, `function loongson_dwmac_msi_config`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: pattern implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.