drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/client.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/client.c

Extension

.c

Size

1046 bytes

Lines

50

Domain

Driver Families

Bucket

drivers/gpu

Inferred role

Driver Families: implementation source

Status

source 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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• rm.h

Detected Declarations

• function Copyright
• function nvkm_gsp_client_ctor

Annotated Snippet

#include "rm.h"

void
nvkm_gsp_client_dtor(struct nvkm_gsp_client *client)
{
	const unsigned int id = client->object.handle - NVKM_RM_CLIENT(0);
	struct nvkm_gsp *gsp = client->gsp;

	if (!gsp)
		return;

	if (client->object.client)
		nvkm_gsp_rm_free(&client->object);

	mutex_lock(&gsp->client_id.mutex);
	idr_remove(&gsp->client_id.idr, id);
	mutex_unlock(&gsp->client_id.mutex);

	client->gsp = NULL;
}

int
nvkm_gsp_client_ctor(struct nvkm_gsp *gsp, struct nvkm_gsp_client *client)
{
	int id, ret;

	if (WARN_ON(!gsp->rm))
		return -ENOSYS;

	mutex_lock(&gsp->client_id.mutex);
	id = idr_alloc(&gsp->client_id.idr, client, 0, NVKM_RM_CLIENT_MASK + 1, GFP_KERNEL);
	mutex_unlock(&gsp->client_id.mutex);
	if (id < 0)
		return id;

	client->gsp = gsp;
	client->object.client = client;
	INIT_LIST_HEAD(&client->events);

	ret = gsp->rm->api->client->ctor(client, NVKM_RM_CLIENT(id));
	if (ret)
		nvkm_gsp_client_dtor(client);

	return ret;
}

Annotation

• Immediate include surface: `rm.h`.
• Detected declarations: `function Copyright`, `function nvkm_gsp_client_ctor`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source 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.