drivers/gpu/drm/vc4/vc4_fence.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/vc4/vc4_fence.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/vc4/vc4_fence.c
Extension
.c
Size
1725 bytes
Lines
49
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.

Dependency Surface

Detected Declarations

Annotated Snippet

#include "vc4_drv.h"

static const char *vc4_fence_get_driver_name(struct dma_fence *fence)
{
	return "vc4";
}

static const char *vc4_fence_get_timeline_name(struct dma_fence *fence)
{
	return "vc4-v3d";
}

static bool vc4_fence_signaled(struct dma_fence *fence)
{
	struct vc4_fence *f = to_vc4_fence(fence);
	struct vc4_dev *vc4 = to_vc4_dev(f->dev);

	return vc4->finished_seqno >= f->seqno;
}

const struct dma_fence_ops vc4_fence_ops = {
	.get_driver_name = vc4_fence_get_driver_name,
	.get_timeline_name = vc4_fence_get_timeline_name,
	.signaled = vc4_fence_signaled,
};

Annotation

Implementation Notes