drivers/comedi/drivers/cb_pcidas.c

File Facts

System

Linux kernel

Corpus path

drivers/comedi/drivers/cb_pcidas.c

Extension

.c

Size

43182 bytes

Lines

1500

Domain

Driver Families

Bucket

drivers/comedi

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/delay.h
• linux/interrupt.h
• linux/comedi/comedi_pci.h
• linux/comedi/comedi_8255.h
• linux/comedi/comedi_8254.h
• amcc_s5933.h

Detected Declarations

• struct cb_pcidas_board
• struct cb_pcidas_private
• enum cb_pcidas_boardid
• function cb_pcidas_ai_eoc
• function cb_pcidas_ai_insn_read
• function cb_pcidas_ai_insn_config
• function cb_pcidas_ao_nofifo_insn_write
• function cb_pcidas_ao_fifo_insn_write
• function cb_pcidas_eeprom_ready
• function cb_pcidas_eeprom_insn_read
• function cb_pcidas_calib_write
• function cb_pcidas_caldac_insn_write
• function cb_pcidas_dac08_write
• function cb_pcidas_dac08_insn_write
• function cb_pcidas_trimpot_write
• function cb_pcidas_trimpot_insn_write
• function cb_pcidas_ai_check_chanlist
• function cb_pcidas_ai_cmdtest
• function cb_pcidas_ai_cmd
• function cb_pcidas_ao_check_chanlist
• function cb_pcidas_ao_cmdtest
• function cb_pcidas_ai_cancel
• function cb_pcidas_ao_load_fifo
• function cb_pcidas_ao_inttrig
• function cb_pcidas_ao_cmd
• function cb_pcidas_ao_cancel
• function cb_pcidas_ao_interrupt
• function cb_pcidas_ai_interrupt
• function cb_pcidas_interrupt
• function cb_pcidas_auto_attach
• function cb_pcidas_detach
• function cb_pcidas_pci_probe

Annotated Snippet

static struct pci_driver cb_pcidas_pci_driver = {
	.name		= "cb_pcidas",
	.id_table	= cb_pcidas_pci_table,
	.probe		= cb_pcidas_pci_probe,
	.remove		= comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(cb_pcidas_driver, cb_pcidas_pci_driver);

MODULE_AUTHOR("Comedi https://www.comedi.org");
MODULE_DESCRIPTION("Comedi driver for MeasurementComputing PCI-DAS series");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/delay.h`, `linux/interrupt.h`, `linux/comedi/comedi_pci.h`, `linux/comedi/comedi_8255.h`, `linux/comedi/comedi_8254.h`, `amcc_s5933.h`.
• Detected declarations: `struct cb_pcidas_board`, `struct cb_pcidas_private`, `enum cb_pcidas_boardid`, `function cb_pcidas_ai_eoc`, `function cb_pcidas_ai_insn_read`, `function cb_pcidas_ai_insn_config`, `function cb_pcidas_ao_nofifo_insn_write`, `function cb_pcidas_ao_fifo_insn_write`, `function cb_pcidas_eeprom_ready`, `function cb_pcidas_eeprom_insn_read`.
• Atlas domain: Driver Families / drivers/comedi.
• Implementation status: pattern 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.