drivers/bluetooth/hci_bcm4377.c

File Facts

System

Linux kernel

Corpus path

drivers/bluetooth/hci_bcm4377.c

Extension

.c

Size

75059 bytes

Lines

2563

Domain

Driver Families

Bucket

drivers/bluetooth

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.
• 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/async.h
• linux/bitfield.h
• linux/completion.h
• linux/dma-mapping.h
• linux/dmi.h
• linux/firmware.h
• linux/module.h
• linux/msi.h
• linux/of.h
• linux/pci.h
• linux/printk.h
• linux/unaligned.h
• net/bluetooth/bluetooth.h
• net/bluetooth/hci_core.h

Detected Declarations

• struct bcm4377_xfer_ring_entry
• struct bcm4377_completion_ring_entry
• struct bcm4377_create_completion_ring_msg
• struct bcm4377_destroy_completion_ring_msg
• struct bcm4377_create_transfer_ring_msg
• struct bcm4377_destroy_transfer_ring_msg
• struct bcm4377_context
• struct bcm4378_hci_send_calibration_cmd
• struct bcm4378_hci_send_ptb_cmd
• struct bcm4377_ring_state
• struct bcm4377_transfer_ring
• struct bcm4377_completion_ring
• struct bcm4377_data
• struct bcm4377_hw
• struct bcm4377_data
• enum bcm4377_chip
• enum bcm4377_otp_params_type
• enum bcm4377_transfer_ring_id
• enum bcm4377_completion_ring_id
• enum bcm4377_doorbell
• enum bcm4377_control_message_type
• function bcm4377_ring_doorbell
• function bcm4377_extract_msgid
• function bcm4377_handle_event
• function bcm4377_handle_ack
• function bcm4377_handle_completion
• function bcm4377_poll_completion_ring
• function bcm4377_irq
• function bcm4377_enqueue
• function bcm4377_create_completion_ring
• function bcm4377_destroy_completion_ring
• function bcm4377_create_transfer_ring
• function bcm4377_destroy_transfer_ring
• function __bcm4378_send_calibration_chunk
• function __bcm4378_send_calibration
• function bcm4378_send_calibration
• function bcm4387_send_calibration
• function bcm4388_send_calibration
• function bcm4377_send_ptb
• function bcm4378_send_ptb_chunk
• function bcm4378_send_ptb
• function bcm4377_hci_open
• function bcm4377_hci_close
• function bcm4377_is_valid_bdaddr
• function bcm4377_check_bdaddr
• function bcm4377_hci_setup
• function bcm4377_hci_send_frame
• function bcm4377_hci_set_bdaddr

Annotated Snippet

static struct pci_driver bcm4377_pci_driver = {
	.name = "hci_bcm4377",
	.id_table = bcm4377_devid_table,
	.probe = bcm4377_probe,
	.driver.pm = &bcm4377_ops,
};
module_pci_driver(bcm4377_pci_driver);

MODULE_AUTHOR("Sven Peter <sven@svenpeter.dev>");
MODULE_DESCRIPTION("Bluetooth support for Broadcom 4377/4378/4387/4388 devices");
MODULE_LICENSE("Dual MIT/GPL");
MODULE_FIRMWARE("brcm/brcmbt4377*.bin");
MODULE_FIRMWARE("brcm/brcmbt4377*.ptb");
MODULE_FIRMWARE("brcm/brcmbt4378*.bin");
MODULE_FIRMWARE("brcm/brcmbt4378*.ptb");
MODULE_FIRMWARE("brcm/brcmbt4387*.bin");
MODULE_FIRMWARE("brcm/brcmbt4387*.ptb");
MODULE_FIRMWARE("brcm/brcmbt4388*.bin");
MODULE_FIRMWARE("brcm/brcmbt4388*.ptb");

Annotation

• Immediate include surface: `linux/async.h`, `linux/bitfield.h`, `linux/completion.h`, `linux/dma-mapping.h`, `linux/dmi.h`, `linux/firmware.h`, `linux/module.h`, `linux/msi.h`.
• Detected declarations: `struct bcm4377_xfer_ring_entry`, `struct bcm4377_completion_ring_entry`, `struct bcm4377_create_completion_ring_msg`, `struct bcm4377_destroy_completion_ring_msg`, `struct bcm4377_create_transfer_ring_msg`, `struct bcm4377_destroy_transfer_ring_msg`, `struct bcm4377_context`, `struct bcm4378_hci_send_calibration_cmd`, `struct bcm4378_hci_send_ptb_cmd`, `struct bcm4377_ring_state`.
• Atlas domain: Driver Families / drivers/bluetooth.
• 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.