drivers/virt/coco/tsm-core.c

File Facts

System

Linux kernel

Corpus path

drivers/virt/coco/tsm-core.c

Extension

.c

Size

2852 bytes

Lines

133

Domain

Driver Families

Bucket

drivers/virt

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.
• 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/tsm.h
• linux/device.h
• linux/module.h
• linux/cleanup.h
• linux/pci-tsm.h

Detected Declarations

• function match_id
• function tsm_unregister
• function tsm_release
• function tsm_init
• function tsm_exit
• module init tsm_init
• export tsm_register
• export tsm_unregister

Annotated Snippet

rc = device_add(dev);
	if (rc)
		return ERR_PTR(rc);

	return tsm_register_pci_or_reset(no_free_ptr(tsm_dev), pci_ops);
}
EXPORT_SYMBOL_GPL(tsm_register);

void tsm_unregister(struct tsm_dev *tsm_dev)
{
	if (tsm_dev->pci_ops)
		pci_tsm_unregister(tsm_dev);
	device_unregister(&tsm_dev->dev);
}
EXPORT_SYMBOL_GPL(tsm_unregister);

static void tsm_release(struct device *dev)
{
	struct tsm_dev *tsm_dev = container_of(dev, typeof(*tsm_dev), dev);

	ida_free(&tsm_ida, tsm_dev->id);
	kfree(tsm_dev);
}

static int __init tsm_init(void)
{
	return class_register(&tsm_class);
}
module_init(tsm_init)

static void __exit tsm_exit(void)
{
	class_unregister(&tsm_class);
}
module_exit(tsm_exit)

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("TEE Security Manager Class Device");

Annotation

• Immediate include surface: `linux/tsm.h`, `linux/device.h`, `linux/module.h`, `linux/cleanup.h`, `linux/pci-tsm.h`.
• Detected declarations: `function match_id`, `function tsm_unregister`, `function tsm_release`, `function tsm_init`, `function tsm_exit`, `module init tsm_init`, `export tsm_register`, `export tsm_unregister`.
• Atlas domain: Driver Families / drivers/virt.
• Implementation status: integration implementation candidate.

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.