drivers/vdpa/solidrun/snet_main.c

File Facts

System

Linux kernel

Corpus path

drivers/vdpa/solidrun/snet_main.c

Extension

.c

Size

27710 bytes

Lines

1138

Domain

Driver Families

Bucket

drivers/vdpa

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• 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/iopoll.h
• snet_vdpa.h

Detected Declarations

• function Copyright
• function snet_cfg_irq_hndlr
• function snet_vq_irq_hndlr
• function snet_free_irqs
• function snet_set_vq_address
• function snet_set_vq_num
• function snet_kick_vq
• function snet_kick_vq_with_data
• function snet_set_vq_cb
• function snet_set_vq_ready
• function snet_get_vq_ready
• function snet_vq_state_is_initial
• function snet_set_vq_state
• function snet_get_vq_state
• function snet_get_vq_irq
• function snet_get_vq_align
• function snet_reset_dev
• function snet_reset
• function snet_get_config_size
• function snet_get_features
• function snet_set_drv_features
• function snet_get_drv_features
• function snet_get_vq_num_max
• function snet_set_config_cb
• function snet_get_device_id
• function snet_get_vendor_id
• function snet_get_status
• function snet_write_conf
• function snet_request_irqs
• function snet_set_status
• function snet_get_config
• function snet_set_config
• function snet_suspend
• function snet_resume
• function psnet_open_pf_bar
• function snet_open_vf_bar
• function snet_free_cfg
• function psnet_detect_bar
• function psnet_unmap_unused_bars
• function psnet_read_cfg
• function psnet_alloc_irq_vector
• function snet_alloc_irq_vector
• function snet_free_vqs
• function snet_build_vqs
• function psnet_get_next_irq_num
• function snet_reserve_irq_idx
• function snet_vdpa_probe_pf
• function snet_vdpa_probe_vf

Annotated Snippet

static struct pci_driver snet_vdpa_driver = {
	.name		= "snet-vdpa-driver",
	.id_table	= snet_driver_pci_ids,
	.probe		= snet_vdpa_probe,
	.remove		= snet_vdpa_remove,
};

module_pci_driver(snet_vdpa_driver);

MODULE_AUTHOR("Alvaro Karsz <alvaro.karsz@solid-run.com>");
MODULE_DESCRIPTION("SolidRun vDPA driver");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/iopoll.h`, `snet_vdpa.h`.
• Detected declarations: `function Copyright`, `function snet_cfg_irq_hndlr`, `function snet_vq_irq_hndlr`, `function snet_free_irqs`, `function snet_set_vq_address`, `function snet_set_vq_num`, `function snet_kick_vq`, `function snet_kick_vq_with_data`, `function snet_set_vq_cb`, `function snet_set_vq_ready`.
• Atlas domain: Driver Families / drivers/vdpa.
• Implementation status: pattern implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• 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.