drivers/gpu/drm/nouveau/nouveau_chan.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nouveau_chan.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nouveau_chan.h
Extension
.h
Size
1288 bytes
Lines
68
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

struct nouveau_channel {
	struct nvif_chan chan;

	struct nouveau_cli *cli;
	struct nouveau_vmm *vmm;

	struct nvif_mem mem_userd;
	struct nvif_object *userd;

	int runlist;
	int chid;
	u64 inst;
	u32 token;

	struct nvif_object vram;
	struct nvif_object gart;
	struct nvif_object nvsw;

	struct {
		struct nouveau_bo *buffer;
		struct nouveau_vma *vma;
		struct nvif_object ctxdma;
		u64 addr;
	} push;

	void *fence;
	struct {
		int max;
		int free;
		int cur;
		int put;
	} dma;
	u32 user_get;
	u32 user_put;

	struct {
		struct nouveau_bo *bo;
		struct nouveau_vma *vma;
	} sema;

	struct nvif_object user;
	struct nvif_object blit;

	struct nvif_event kill;
	atomic_t killed;
};

int nouveau_channels_init(struct nouveau_drm *);
void nouveau_channels_fini(struct nouveau_drm *);

int  nouveau_channel_new(struct nouveau_cli *, bool priv, u64 runm,
			 u32 vram, u32 gart, struct nouveau_channel **);
void nouveau_channel_del(struct nouveau_channel **);
int  nouveau_channel_idle(struct nouveau_channel *);
void nouveau_channel_kill(struct nouveau_channel *);

extern int nouveau_vram_pushbuf;

#endif

Annotation

Implementation Notes