drivers/ptp/ptp_netc.c

File Facts

System

Linux kernel

Corpus path

drivers/ptp/ptp_netc.c

Extension

.c

Size

27358 bytes

Lines

1044

Domain

Driver Families

Bucket

drivers/ptp

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/bitfield.h
• linux/clk.h
• linux/fsl/netc_global.h
• linux/module.h
• linux/of.h
• linux/of_platform.h
• linux/pci.h
• linux/ptp_clock_kernel.h

Detected Declarations

• struct netc_pp
• struct netc_timer
• enum netc_pp_type
• function netc_timer_cnt_write
• function netc_timer_offset_read
• function netc_timer_offset_write
• function netc_timer_cur_time_read
• function netc_timer_alarm_write
• function netc_timer_get_integral_period
• function netc_timer_calculate_fiper_pw
• function netc_timer_set_pps_alarm
• function netc_timer_set_perout_alarm
• function netc_timer_get_alarm_id
• function netc_timer_get_gclk_period
• function netc_timer_enable_periodic_pulse
• function netc_timer_disable_periodic_pulse
• function netc_timer_select_pps_channel
• function netc_timer_enable_pps
• function net_timer_enable_perout
• function netc_timer_handle_etts_event
• function netc_timer_enable_extts
• function netc_timer_disable_fiper
• function netc_timer_enable_fiper
• function netc_timer_enable
• function netc_timer_perout_loopback
• function netc_timer_adjust_period
• function netc_timer_adjfine
• function netc_timer_adjtime
• function netc_timer_gettimex64
• function netc_timer_settime64
• function netc_timer_init
• function netc_timer_pci_probe
• function netc_timer_pci_remove
• function netc_timer_get_reference_clk_source
• function netc_timer_parse_dt
• function netc_timer_isr
• function netc_timer_init_msix_irq
• function netc_timer_free_msix_irq
• function netc_timer_get_global_ip_rev
• function netc_timer_probe
• function netc_timer_remove

Annotated Snippet

static struct pci_driver netc_timer_driver = {
	.name = KBUILD_MODNAME,
	.id_table = netc_timer_id_table,
	.probe = netc_timer_probe,
	.remove = netc_timer_remove,
};
module_pci_driver(netc_timer_driver);

MODULE_DESCRIPTION("NXP NETC Timer PTP Driver");
MODULE_LICENSE("Dual BSD/GPL");

Annotation

• Immediate include surface: `linux/bitfield.h`, `linux/clk.h`, `linux/fsl/netc_global.h`, `linux/module.h`, `linux/of.h`, `linux/of_platform.h`, `linux/pci.h`, `linux/ptp_clock_kernel.h`.
• Detected declarations: `struct netc_pp`, `struct netc_timer`, `enum netc_pp_type`, `function netc_timer_cnt_write`, `function netc_timer_offset_read`, `function netc_timer_offset_write`, `function netc_timer_cur_time_read`, `function netc_timer_alarm_write`, `function netc_timer_get_integral_period`, `function netc_timer_calculate_fiper_pw`.
• Atlas domain: Driver Families / drivers/ptp.
• 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.