drivers/gpu/drm/nouveau/nvkm/subdev/fault/base.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/subdev/fault/base.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/subdev/fault/base.c
Extension
.c
Size
4472 bytes
Lines
167
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

if (i < fault->func->buffer.nr) {
			ret = nvkm_fault_oneinit_buffer(fault, i);
			if (ret)
				return ret;
			fault->buffer_nr = i + 1;
		}
	}

	ret = nvkm_event_init(&nvkm_fault_ntfy, subdev, 1, fault->buffer_nr, &fault->event);
	if (ret)
		return ret;

	if (fault->func->oneinit)
		ret = fault->func->oneinit(fault);
	return ret;
}

static void *
nvkm_fault_dtor(struct nvkm_subdev *subdev)
{
	struct nvkm_fault *fault = nvkm_fault(subdev);
	int i;

	nvkm_event_ntfy_del(&fault->nrpfb);
	nvkm_event_fini(&fault->event);

	for (i = 0; i < fault->buffer_nr; i++) {
		if (fault->buffer[i]) {
			nvkm_memory_unref(&fault->buffer[i]->mem);
			kfree(fault->buffer[i]);
		}
	}

	return fault;
}

static const struct nvkm_subdev_func
nvkm_fault = {
	.dtor = nvkm_fault_dtor,
	.oneinit = nvkm_fault_oneinit,
	.init = nvkm_fault_init,
	.fini = nvkm_fault_fini,
	.intr = nvkm_fault_intr,
};

int
nvkm_fault_new_(const struct nvkm_fault_func *func, struct nvkm_device *device,
		enum nvkm_subdev_type type, int inst, struct nvkm_fault **pfault)
{
	struct nvkm_fault *fault;
	if (!(fault = *pfault = kzalloc_obj(*fault)))
		return -ENOMEM;
	nvkm_subdev_ctor(&nvkm_fault, device, type, inst, &fault->subdev);
	fault->func = func;
	fault->user.ctor = nvkm_ufault_new;
	fault->user.base = func->user.base;
	return 0;
}

Annotation

Implementation Notes