drivers/mtd/chips/map_ram.c
Source file repositories/reference/linux-study-clean/drivers/mtd/chips/map_ram.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/mtd/chips/map_ram.c- Extension
.c- Size
- 3839 bytes
- Lines
- 164
- Domain
- Driver Families
- Bucket
- drivers/mtd
- 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/module.hlinux/types.hlinux/kernel.hasm/io.hasm/byteorder.hlinux/errno.hlinux/slab.hlinux/init.hlinux/mtd/mtd.hlinux/mtd/map.h
Detected Declarations
function mapram_pointfunction mapram_unpointfunction mapram_readfunction mapram_writefunction mapram_erasefunction mapram_nopfunction map_ram_exitmodule init map_ram_init
Annotated Snippet
module_init(map_ram_init);
module_exit(map_ram_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
MODULE_DESCRIPTION("MTD chip driver for RAM chips");Annotation
- Immediate include surface: `linux/module.h`, `linux/types.h`, `linux/kernel.h`, `asm/io.h`, `asm/byteorder.h`, `linux/errno.h`, `linux/slab.h`, `linux/init.h`.
- Detected declarations: `function mapram_point`, `function mapram_unpoint`, `function mapram_read`, `function mapram_write`, `function mapram_erase`, `function mapram_nop`, `function map_ram_exit`, `module init map_ram_init`.
- Atlas domain: Driver Families / drivers/mtd.
- 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.