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

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

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/subdev/top/base.c
Extension
.c
Size
4041 bytes
Lines
162
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

list_for_each_entry(info, &top->device, head) {
			if (info->type == type && info->inst == inst)
				return info->addr;
		}
	}

	return 0;
}

u32
nvkm_top_reset(struct nvkm_device *device, enum nvkm_subdev_type type, int inst)
{
	struct nvkm_top *top = device->top;
	struct nvkm_top_device *info;

	if (top) {
		list_for_each_entry(info, &top->device, head) {
			if (info->type == type && info->inst == inst && info->reset >= 0)
				return BIT(info->reset);
		}
	}

	return 0;
}

u32
nvkm_top_intr_mask(struct nvkm_device *device, enum nvkm_subdev_type type, int inst)
{
	struct nvkm_top *top = device->top;
	struct nvkm_top_device *info;

	if (top) {
		list_for_each_entry(info, &top->device, head) {
			if (info->type == type && info->inst == inst && info->intr >= 0)
				return BIT(info->intr);
		}
	}

	return 0;
}

int
nvkm_top_fault_id(struct nvkm_device *device, enum nvkm_subdev_type type, int inst)
{
	struct nvkm_top *top = device->top;
	struct nvkm_top_device *info;

	list_for_each_entry(info, &top->device, head) {
		if (info->type == type && info->inst == inst && info->fault >= 0)
			return info->fault;
	}

	return -ENOENT;
}

struct nvkm_subdev *
nvkm_top_fault(struct nvkm_device *device, int fault)
{
	struct nvkm_top *top = device->top;
	struct nvkm_top_device *info;

	list_for_each_entry(info, &top->device, head) {
		if (info->fault == fault)
			return nvkm_device_subdev(device, info->type, info->inst);
	}

	return NULL;
}

int
nvkm_top_parse(struct nvkm_device *device)
{
	struct nvkm_top *top = device->top;

	if (!top || !list_empty(&top->device))
		return 0;

	return top->func->parse(top);
}

static void *
nvkm_top_dtor(struct nvkm_subdev *subdev)
{
	struct nvkm_top *top = nvkm_top(subdev);
	struct nvkm_top_device *info, *temp;

	list_for_each_entry_safe(info, temp, &top->device, head) {
		list_del(&info->head);
		kfree(info);
	}

Annotation

Implementation Notes