drivers/gpu/drm/nouveau/nouveau_bo5039.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nouveau_bo5039.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nouveau_bo5039.c
Extension
.c
Size
4616 bytes
Lines
152
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 (src_tiled) {
			PUSH_MTHD(push, NV5039, SET_SRC_MEMORY_LAYOUT,
				  NVDEF(NV5039, SET_SRC_MEMORY_LAYOUT, V, BLOCKLINEAR),

						SET_SRC_BLOCK_SIZE,
				  NVDEF(NV5039, SET_SRC_BLOCK_SIZE, WIDTH, ONE_GOB) |
				  NVDEF(NV5039, SET_SRC_BLOCK_SIZE, HEIGHT, ONE_GOB) |
				  NVDEF(NV5039, SET_SRC_BLOCK_SIZE, DEPTH, ONE_GOB),

						SET_SRC_WIDTH, stride,
						SET_SRC_HEIGHT, height,
						SET_SRC_DEPTH, 1,
						SET_SRC_LAYER, 0,

						SET_SRC_ORIGIN,
				  NVVAL(NV5039, SET_SRC_ORIGIN, X, 0) |
				  NVVAL(NV5039, SET_SRC_ORIGIN, Y, 0));
		} else {
			PUSH_MTHD(push, NV5039, SET_SRC_MEMORY_LAYOUT,
				  NVDEF(NV5039, SET_SRC_MEMORY_LAYOUT, V, PITCH));
		}

		if (dst_tiled) {
			PUSH_MTHD(push, NV5039, SET_DST_MEMORY_LAYOUT,
				  NVDEF(NV5039, SET_DST_MEMORY_LAYOUT, V, BLOCKLINEAR),

						SET_DST_BLOCK_SIZE,
				  NVDEF(NV5039, SET_DST_BLOCK_SIZE, WIDTH, ONE_GOB) |
				  NVDEF(NV5039, SET_DST_BLOCK_SIZE, HEIGHT, ONE_GOB) |
				  NVDEF(NV5039, SET_DST_BLOCK_SIZE, DEPTH, ONE_GOB),

						SET_DST_WIDTH, stride,
						SET_DST_HEIGHT, height,
						SET_DST_DEPTH, 1,
						SET_DST_LAYER, 0,

						SET_DST_ORIGIN,
				  NVVAL(NV5039, SET_DST_ORIGIN, X, 0) |
				  NVVAL(NV5039, SET_DST_ORIGIN, Y, 0));
		} else {
			PUSH_MTHD(push, NV5039, SET_DST_MEMORY_LAYOUT,
				  NVDEF(NV5039, SET_DST_MEMORY_LAYOUT, V, PITCH));
		}

		PUSH_MTHD(push, NV5039, OFFSET_IN_UPPER,
			  NVVAL(NV5039, OFFSET_IN_UPPER, VALUE, upper_32_bits(src_offset)),

					OFFSET_OUT_UPPER,
			  NVVAL(NV5039, OFFSET_OUT_UPPER, VALUE, upper_32_bits(dst_offset)));

		PUSH_MTHD(push, NV5039, OFFSET_IN, lower_32_bits(src_offset),
					OFFSET_OUT, lower_32_bits(dst_offset),
					PITCH_IN, stride,
					PITCH_OUT, stride,
					LINE_LENGTH_IN, stride,
					LINE_COUNT, height,

					FORMAT,
			  NVDEF(NV5039, FORMAT, IN, ONE) |
			  NVDEF(NV5039, FORMAT, OUT, ONE),

					BUFFER_NOTIFY,
			  NVDEF(NV5039, BUFFER_NOTIFY, TYPE, WRITE_ONLY));

		PUSH_MTHD(push, NV5039, NO_OPERATION, 0x00000000);

		length -= amount;
		src_offset += amount;
		dst_offset += amount;
	}

	return 0;
}

int
nv50_bo_move_init(struct nouveau_channel *chan, u32 handle)
{
	struct nvif_push *push = &chan->chan.push;
	int ret;

	ret = PUSH_WAIT(push, 6);
	if (ret)
		return ret;

	PUSH_MTHD(push, NV5039, SET_OBJECT, handle);
	PUSH_MTHD(push, NV5039, SET_CONTEXT_DMA_NOTIFY, chan->cli->drm->ntfy.handle,
				SET_CONTEXT_DMA_BUFFER_IN, chan->vram.handle,
				SET_CONTEXT_DMA_BUFFER_OUT, chan->vram.handle);
	return 0;
}

Annotation

Implementation Notes