drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gk104.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gk104.c

Extension

.c

Size

2109 bytes

Lines

59

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.

• 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• priv.h

Detected Declarations

• function files
• function gk104_ltc_new

Annotated Snippet

#include "priv.h"

static void
gk104_ltc_init(struct nvkm_ltc *ltc)
{
	struct nvkm_device *device = ltc->subdev.device;
	u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);

	nvkm_wr32(device, 0x17e8d8, ltc->ltc_nr);
	nvkm_wr32(device, 0x17e000, ltc->ltc_nr);
	nvkm_wr32(device, 0x17e8d4, ltc->tag_base);
	nvkm_mask(device, 0x17e8c0, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
}

static const struct nvkm_ltc_func
gk104_ltc = {
	.oneinit = gf100_ltc_oneinit,
	.init = gk104_ltc_init,
	.intr = gf100_ltc_intr,
	.cbc_clear = gf100_ltc_cbc_clear,
	.cbc_wait = gf100_ltc_cbc_wait,
	.zbc_color = 16,
	.zbc_depth = 16,
	.zbc_clear_color = gf100_ltc_zbc_clear_color,
	.zbc_clear_depth = gf100_ltc_zbc_clear_depth,
	.invalidate = gf100_ltc_invalidate,
	.flush = gf100_ltc_flush,
};

int
gk104_ltc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
	      struct nvkm_ltc **pltc)
{
	return nvkm_ltc_new_(&gk104_ltc, device, type, inst, pltc);
}

Annotation

• Immediate include surface: `priv.h`.
• Detected declarations: `function files`, `function gk104_ltc_new`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.