drivers/firmware/arm_scmi/transports/optee.c

File Facts

System

Linux kernel

Corpus path

drivers/firmware/arm_scmi/transports/optee.c

Extension

.c

Size

17266 bytes

Lines

650

Domain

Driver Families

Bucket

drivers/firmware

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.
• 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/io.h
• linux/of.h
• linux/of_address.h
• linux/kernel.h
• linux/module.h
• linux/mutex.h
• linux/platform_device.h
• linux/slab.h
• linux/tee_drv.h
• linux/uuid.h
• uapi/linux/tee.h
• ../common.h

Detected Declarations

• struct scmi_optee_channel
• struct scmi_optee_agent
• enum scmi_optee_pta_cmd
• function open_session
• function close_session
• function get_capabilities
• function get_channel
• function invoke_process_smt_channel
• function invoke_process_msg_channel
• function scmi_optee_chan_available
• function scmi_optee_clear_channel
• function setup_dynamic_shmem
• function setup_static_shmem
• function setup_shmem
• function scmi_optee_chan_setup
• function scmi_optee_chan_free
• function scmi_optee_send_message
• function scmi_optee_fetch_response
• function scmi_optee_mark_txdone
• function scmi_optee_ctx_match
• function scmi_optee_service_probe
• function scmi_optee_service_remove
• function scmi_transport_optee_init
• function scmi_transport_optee_exit
• module init scmi_transport_optee_init

Annotated Snippet

module_init(scmi_transport_optee_init);

static void __exit scmi_transport_optee_exit(void)
{
	platform_driver_unregister(&scmi_optee_driver);
	tee_client_driver_unregister(&scmi_optee_service_driver);
}
module_exit(scmi_transport_optee_exit);

MODULE_AUTHOR("Etienne Carriere <etienne.carriere@foss.st.com>");
MODULE_DESCRIPTION("SCMI OPTEE Transport driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/io.h`, `linux/of.h`, `linux/of_address.h`, `linux/kernel.h`, `linux/module.h`, `linux/mutex.h`, `linux/platform_device.h`, `linux/slab.h`.
• Detected declarations: `struct scmi_optee_channel`, `struct scmi_optee_agent`, `enum scmi_optee_pta_cmd`, `function open_session`, `function close_session`, `function get_capabilities`, `function get_channel`, `function invoke_process_smt_channel`, `function invoke_process_msg_channel`, `function scmi_optee_chan_available`.
• Atlas domain: Driver Families / drivers/firmware.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.