sound/isa/sscape.c

File Facts

System

Linux kernel

Corpus path

sound/isa/sscape.c

Extension

.c

Size

34402 bytes

Lines

1407

Domain

Driver Families

Bucket

sound/isa

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.
• 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/init.h
• linux/err.h
• linux/io.h
• linux/isa.h
• linux/delay.h
• linux/firmware.h
• linux/pnp.h
• linux/spinlock.h
• linux/module.h
• asm/dma.h
• sound/core.h
• sound/wss.h
• sound/mpu401.h
• sound/initval.h

Detected Declarations

• struct soundscape
• enum GA_REG
• enum card_type
• function sscape_store_settings
• function free_dmabuf
• function sscape_write_unsafe
• function sscape_write
• function sscape_read_unsafe
• function set_host_mode_unsafe
• function set_midi_mode_unsafe
• function host_read_unsafe
• function host_read_ctrl_unsafe
• function host_write_unsafe
• function host_write_ctrl_unsafe
• function verify_mpu401
• function initialise_mpu401
• function chip
• function sscape_start_dma_unsafe
• function sscape_wait_dma_unsafe
• function obp_startup_ack
• function scoped_guard
• function host_startup_ack
• function scoped_guard
• function upload_dma_data
• function scoped_guard
• function bootblock
• function sscape_upload_microcode
• function sscape_restore_midi_state
• function sscape_midi_info
• function sscape_midi_get
• function sscape_midi_put
• function get_irq_config
• function sscape_configure_board
• function scoped_guard
• function detect_sscape
• function mpu401_open
• function create_mpu401
• function create_ad1845
• function scoped_guard
• function create_sscape
• function sscape_resume_midi
• function snd_sscape_suspend_card
• function snd_sscape_resume_card
• function snd_sscape_suspend
• function snd_sscape_resume
• function snd_sscape_match
• function snd_sscape_probe
• function get_next_autoindex

Annotated Snippet

module_init(sscape_init);
module_exit(sscape_exit);

Annotation

• Immediate include surface: `linux/init.h`, `linux/err.h`, `linux/io.h`, `linux/isa.h`, `linux/delay.h`, `linux/firmware.h`, `linux/pnp.h`, `linux/spinlock.h`.
• Detected declarations: `struct soundscape`, `enum GA_REG`, `enum card_type`, `function sscape_store_settings`, `function free_dmabuf`, `function sscape_write_unsafe`, `function sscape_write`, `function sscape_read_unsafe`, `function set_host_mode_unsafe`, `function set_midi_mode_unsafe`.
• Atlas domain: Driver Families / sound/isa.
• Implementation status: integration 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.