drivers/edac/imh_base.c

File Facts

System

Linux kernel

Corpus path

drivers/edac/imh_base.c

Extension

.c

Size

15702 bytes

Lines

632

Domain

Driver Families

Bucket

drivers/edac

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/kernel.h
• linux/io.h
• asm/cpu_device_id.h
• asm/intel-family.h
• asm/mce.h
• asm/cpu.h
• edac_module.h
• skx_common.h

Detected Declarations

• struct local_reg
• function __read_local_reg
• function read_local_reg
• function get_imc_bitmap
• function imc_release
• function __get_ddr_munits
• function for_each_set_bit
• function get_ddr_munits
• function get_socket_id
• function imh_get_tolm_tohm
• function imh_get_all_mmio_base_h
• function imh_get_imc_num
• function imh_get_munits
• function list_for_each_entry
• function check_2lm_enabled
• function imh_2lm_enabled
• function list_for_each_entry
• function read_imc_mcmtr
• function read_imc_dimmmtr
• function ecc_enabled
• function dimm_populated
• function imh_get_dimm_config
• function imh_register_mci
• function list_for_each_entry
• function imh_init
• function imh_exit
• module init imh_init

Annotated Snippet

module_init(imh_init);
module_exit(imh_exit);

module_param(retry_rd_err_log, int, 0444);
MODULE_PARM_DESC(retry_rd_err_log, "retry_rd_err_log: 0=off(default), 1=bios(Linux doesn't reset any control bits, but just reports values.), 2=linux(Linux tries to take control and resets mode bits, clear valid/UC bits after reading.)");

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Qiuxu Zhuo");
MODULE_DESCRIPTION("MC Driver for Intel servers using IMH-based memory controller");

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/io.h`, `asm/cpu_device_id.h`, `asm/intel-family.h`, `asm/mce.h`, `asm/cpu.h`, `edac_module.h`, `skx_common.h`.
• Detected declarations: `struct local_reg`, `function __read_local_reg`, `function read_local_reg`, `function get_imc_bitmap`, `function imc_release`, `function __get_ddr_munits`, `function for_each_set_bit`, `function get_ddr_munits`, `function get_socket_id`, `function imh_get_tolm_tohm`.
• Atlas domain: Driver Families / drivers/edac.
• 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.