drivers/uio/uio_hv_generic.c

File Facts

System

Linux kernel

Corpus path

drivers/uio/uio_hv_generic.c

Extension

.c

Size

11720 bytes

Lines

425

Domain

Driver Families

Bucket

drivers/uio

Inferred role

Driver Families: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• 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/device.h
• linux/kernel.h
• linux/module.h
• linux/uio_driver.h
• linux/netdevice.h
• linux/if_ether.h
• linux/skbuff.h
• linux/hyperv.h
• linux/vmalloc.h
• linux/slab.h
• ../hv/hyperv_vmbus.h

Detected Declarations

• struct hv_uio_private_data
• enum hv_uio_map
• function set_event
• function hv_uio_irqcontrol
• function hv_uio_channel_cb
• function hv_uio_rescind
• function hv_uio_ring_mmap_prepare
• function hv_uio_new_channel
• function hv_uio_cleanup
• function hv_uio_open
• function hv_uio_release
• function hv_uio_probe
• function hv_uio_remove
• function hyperv_module_init
• function hyperv_module_exit
• module init hyperv_module_init

Annotated Snippet

module_init(hyperv_module_init);
module_exit(hyperv_module_exit);

MODULE_VERSION(DRIVER_VERSION);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);

Annotation

• Immediate include surface: `linux/device.h`, `linux/kernel.h`, `linux/module.h`, `linux/uio_driver.h`, `linux/netdevice.h`, `linux/if_ether.h`, `linux/skbuff.h`, `linux/hyperv.h`.
• Detected declarations: `struct hv_uio_private_data`, `enum hv_uio_map`, `function set_event`, `function hv_uio_irqcontrol`, `function hv_uio_channel_cb`, `function hv_uio_rescind`, `function hv_uio_ring_mmap_prepare`, `function hv_uio_new_channel`, `function hv_uio_cleanup`, `function hv_uio_open`.
• Atlas domain: Driver Families / drivers/uio.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.