drivers/bus/mhi/host/pci_generic.c

File Facts

System

Linux kernel

Corpus path

drivers/bus/mhi/host/pci_generic.c

Extension

.c

Size

54163 bytes

Lines

1763

Domain

Driver Families

Bucket

drivers/bus

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/delay.h
• linux/device.h
• linux/mhi.h
• linux/module.h
• linux/pci.h
• linux/pm_runtime.h
• linux/timer.h
• linux/workqueue.h

Detected Declarations

• struct mhi_pci_dev_info
• struct mhi_pci_device
• enum mhi_pci_device_status
• function mhi_pci_read_reg
• function mhi_pci_write_reg
• function mhi_pci_status_cb
• function mhi_pci_wake_get_nop
• function mhi_pci_claim
• function mhi_pci_get_irqs
• function mhi_pci_runtime_get
• function mhi_pci_runtime_put
• function mhi_pci_recovery_work
• function health_check
• function mhi_pci_generic_edl_trigger
• function mhi_pci_probe
• function mhi_pci_remove
• function mhi_pci_shutdown
• function mhi_pci_reset_prepare
• function mhi_pci_reset_done
• function mhi_pci_error_detected
• function mhi_pci_slot_reset
• function mhi_pci_io_resume
• function mhi_pci_runtime_suspend
• function mhi_pci_runtime_resume
• function mhi_pci_suspend
• function mhi_pci_resume
• function mhi_pci_freeze
• function mhi_pci_restore

Annotated Snippet

static struct pci_driver mhi_pci_driver = {
	.name		= "mhi-pci-generic",
	.id_table	= mhi_pci_id_table,
	.probe		= mhi_pci_probe,
	.remove		= mhi_pci_remove,
	.shutdown	= mhi_pci_shutdown,
	.err_handler	= &mhi_pci_err_handler,
	.driver.pm	= &mhi_pci_pm_ops,
	.sriov_configure = pci_sriov_configure_simple,
};
module_pci_driver(mhi_pci_driver);

MODULE_AUTHOR("Loic Poulain <loic.poulain@linaro.org>");
MODULE_DESCRIPTION("Modem Host Interface (MHI) PCI controller driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/delay.h`, `linux/device.h`, `linux/mhi.h`, `linux/module.h`, `linux/pci.h`, `linux/pm_runtime.h`, `linux/timer.h`, `linux/workqueue.h`.
• Detected declarations: `struct mhi_pci_dev_info`, `struct mhi_pci_device`, `enum mhi_pci_device_status`, `function mhi_pci_read_reg`, `function mhi_pci_write_reg`, `function mhi_pci_status_cb`, `function mhi_pci_wake_get_nop`, `function mhi_pci_claim`, `function mhi_pci_get_irqs`, `function mhi_pci_runtime_get`.
• Atlas domain: Driver Families / drivers/bus.
• 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.