sound/oss/dmasound/dmasound_atari.c

File Facts

System

Linux kernel

Corpus path

sound/oss/dmasound/dmasound_atari.c

Extension

.c

Size

42657 bytes

Lines

1624

Domain

Driver Families

Bucket

sound/oss

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.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.

Dependency Surface

• linux/module.h
• linux/kernel.h
• linux/init.h
• linux/soundcard.h
• linux/mm.h
• linux/spinlock.h
• linux/interrupt.h
• linux/uaccess.h
• asm/atariints.h
• asm/atari_stram.h
• dmasound.h

Detected Declarations

• function ata_ct_law
• function ata_ct_s8
• function ata_ct_u8
• function ata_ct_s16be
• function ata_ct_u16be
• function ata_ct_s16le
• function ata_ct_u16le
• function ata_ctx_law
• function ata_ctx_s8
• function ata_ctx_u8
• function ata_ctx_s16be
• function ata_ctx_u16be
• function ata_ctx_s16le
• function ata_ctx_u16le
• function Atari
• function AtaFree
• function AtaIrqInit
• function AtaIrqCleanUp
• function AtaSetBass
• function AtaSetTreble
• function TTSilence
• function TTInit
• function TTSetFormat
• function TTSetVolume
• function TTSetGain
• function FalconSilence
• function FalconInit
• function FalconSetFormat
• function FalconSetVolume
• function AtaPlayNextFrame
• function AtaPlay
• function AtaInterrupt
• function TTMixerInit
• function FalconMixerInit
• function AtaMixerIoctl
• function TTMixerIoctl
• function FalconMixerIoctl
• function AtaWriteSqSetup
• function AtaSqOpen
• function TTStateInfo
• function FalconStateInfo
• function dmasound_atari_init
• function dmasound_atari_cleanup
• module init dmasound_atari_init

Annotated Snippet

module_init(dmasound_atari_init);
module_exit(dmasound_atari_cleanup);

MODULE_DESCRIPTION("Atari TT and Falcon DMA Sound Driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/kernel.h`, `linux/init.h`, `linux/soundcard.h`, `linux/mm.h`, `linux/spinlock.h`, `linux/interrupt.h`, `linux/uaccess.h`.
• Detected declarations: `function ata_ct_law`, `function ata_ct_s8`, `function ata_ct_u8`, `function ata_ct_s16be`, `function ata_ct_u16be`, `function ata_ct_s16le`, `function ata_ct_u16le`, `function ata_ctx_law`, `function ata_ctx_s8`, `function ata_ctx_u8`.
• Atlas domain: Driver Families / sound/oss.
• 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.
• 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.