drivers/net/wwan/t7xx/t7xx_pci.c

File Facts

System

Linux kernel

Corpus path

drivers/net/wwan/t7xx/t7xx_pci.c

Extension

.c

Size

24470 bytes

Lines

965

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.
• 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/atomic.h
• linux/bits.h
• linux/completion.h
• linux/device.h
• linux/dma-mapping.h
• linux/gfp.h
• linux/interrupt.h
• linux/io.h
• linux/iopoll.h
• linux/jiffies.h
• linux/list.h
• linux/module.h
• linux/mutex.h
• linux/pci.h
• linux/pm.h
• linux/pm_runtime.h
• linux/spinlock.h
• t7xx_mhccif.h
• t7xx_modem_ops.h
• t7xx_pci.h
• t7xx_pcie_mac.h
• t7xx_reg.h
• t7xx_state_monitor.h
• t7xx_port_proxy.h

Detected Declarations

• enum t7xx_pm_state
• function t7xx_mode_store
• function t7xx_mode_show
• function t7xx_debug_ports_store
• function t7xx_debug_ports_show
• function t7xx_mode_update
• function t7xx_dev_set_sleep_capability
• function t7xx_wait_pm_config
• function t7xx_pci_pm_init
• function t7xx_pci_pm_init_late
• function t7xx_pci_pm_reinit
• function t7xx_pci_pm_exp_detected
• function t7xx_pci_pm_entity_register
• function t7xx_pci_pm_entity_unregister
• function t7xx_pci_sleep_disable_complete
• function t7xx_pci_disable_sleep
• function t7xx_pci_enable_sleep
• function t7xx_send_pm_request
• function __t7xx_pci_pm_suspend
• function READ_ONCE
• function list_for_each_entry
• function list_for_each_entry
• function t7xx_pcie_interrupt_reinit
• function t7xx_pcie_reinit
• function t7xx_send_fsm_command
• function t7xx_pci_reprobe_early
• function t7xx_pci_reprobe
• function __t7xx_pci_pm_resume
• function list_for_each_entry
• function list_for_each_entry
• function t7xx_pci_pm_resume_noirq
• function t7xx_pci_shutdown
• function t7xx_pci_pm_prepare
• function t7xx_pci_pm_suspend
• function t7xx_pci_pm_resume
• function t7xx_pci_pm_thaw
• function t7xx_pci_pm_runtime_suspend
• function t7xx_pci_pm_runtime_resume
• function t7xx_request_irq
• function t7xx_setup_msix
• function t7xx_interrupt_init
• function t7xx_pci_infracfg_ao_calc
• function t7xx_pci_probe
• function t7xx_pci_remove

Annotated Snippet

static struct pci_driver t7xx_pci_driver = {
	.name = DRIVER_NAME,
	.id_table = t7xx_pci_table,
	.probe = t7xx_pci_probe,
	.remove = t7xx_pci_remove,
	.driver.pm = &t7xx_pci_pm_ops,
	.shutdown = t7xx_pci_shutdown,
};

module_pci_driver(t7xx_pci_driver);

MODULE_AUTHOR("MediaTek Inc");
MODULE_DESCRIPTION("MediaTek PCIe 5G WWAN modem T7xx driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/atomic.h`, `linux/bits.h`, `linux/completion.h`, `linux/device.h`, `linux/dma-mapping.h`, `linux/gfp.h`, `linux/interrupt.h`, `linux/io.h`.
• Detected declarations: `enum t7xx_pm_state`, `function t7xx_mode_store`, `function t7xx_mode_show`, `function t7xx_debug_ports_store`, `function t7xx_debug_ports_show`, `function t7xx_mode_update`, `function t7xx_dev_set_sleep_capability`, `function t7xx_wait_pm_config`, `function t7xx_pci_pm_init`, `function t7xx_pci_pm_init_late`.
• Atlas domain: Driver Families / drivers/net.
• 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.