drivers/ps3/ps3-lpm.c

File Facts

System

Linux kernel

Corpus path

drivers/ps3/ps3-lpm.c

Extension

.c

Size

31183 bytes

Lines

1239

Domain

Driver Families

Bucket

drivers/ps3

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.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• 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/slab.h
• linux/kernel.h
• linux/module.h
• linux/interrupt.h
• linux/uaccess.h
• asm/smp.h
• asm/time.h
• asm/ps3.h
• asm/lv1call.h
• asm/cell-pmu.h

Detected Declarations

• struct ps3_lpm_shadow_regs
• struct ps3_lpm_priv
• function ps3_set_bookmark
• function ps3_set_pm_bookmark
• function ps3_read_phys_ctr
• function ps3_write_phys_ctr
• function ps3_read_ctr
• function ps3_write_ctr
• function ps3_read_pm07_control
• function ps3_write_pm07_control
• function ps3_read_pm
• function ps3_write_pm
• function ps3_get_ctr_size
• function ps3_set_ctr_size
• function pm_translate_signal_group_number_on_island2
• function pm_translate_signal_group_number_on_island3
• function pm_translate_signal_group_number_on_island4
• function pm_translate_signal_group_number_on_island5
• function pm_translate_signal_group_number_on_island6
• function pm_translate_signal_group_number_on_island7
• function pm_translate_signal_group_number_on_island8
• function pm_signal_group_to_ps3_lv1_signal_group
• function pm_bus_word_to_ps3_lv1_bus_word
• function __ps3_set_signal
• function ps3_set_signal
• function ps3_get_hw_thread_id
• function ps3_enable_pm
• function ps3_disable_pm
• function ps3_lpm_copy_tb
• function ps3_lpm_copy_tb_to_user
• function ps3_get_and_clear_pm_interrupts
• function ps3_enable_pm_interrupts
• function ps3_disable_pm_interrupts
• function ps3_lpm_open
• function ps3_lpm_close
• function ps3_lpm_probe
• function ps3_lpm_remove
• function ps3_lpm_init
• function ps3_lpm_exit
• module init ps3_lpm_init
• export ps3_set_bookmark
• export ps3_set_pm_bookmark
• export ps3_read_phys_ctr
• export ps3_write_phys_ctr
• export ps3_read_ctr
• export ps3_write_ctr
• export ps3_read_pm07_control
• export ps3_write_pm07_control

Annotated Snippet

module_init(ps3_lpm_init);
module_exit(ps3_lpm_exit);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("PS3 Logical Performance Monitor Driver");
MODULE_AUTHOR("Sony Corporation");
MODULE_ALIAS(PS3_MODULE_ALIAS_LPM);

Annotation

• Immediate include surface: `linux/slab.h`, `linux/kernel.h`, `linux/module.h`, `linux/interrupt.h`, `linux/uaccess.h`, `asm/smp.h`, `asm/time.h`, `asm/ps3.h`.
• Detected declarations: `struct ps3_lpm_shadow_regs`, `struct ps3_lpm_priv`, `function ps3_set_bookmark`, `function ps3_set_pm_bookmark`, `function ps3_read_phys_ctr`, `function ps3_write_phys_ctr`, `function ps3_read_ctr`, `function ps3_write_ctr`, `function ps3_read_pm07_control`, `function ps3_write_pm07_control`.
• Atlas domain: Driver Families / drivers/ps3.
• Implementation status: integration implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
• 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.