drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgv100.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgv100.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgv100.c
Extension
.c
Size
2860 bytes
Lines
90
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 (mask & BIT_ULL(i)) {
			nvkm_wo32(inst, 0x2a4 + (i * 0x10), data[1]);
			nvkm_wo32(inst, 0x2a0 + (i * 0x10), data[0]);
		} else {
			nvkm_wo32(inst, 0x2a4 + (i * 0x10), 0x00000001);
			nvkm_wo32(inst, 0x2a0 + (i * 0x10), 0x00000001);
		}
		nvkm_wo32(inst, 0x2a8 + (i * 0x10), 0x00000000);
	}

	nvkm_wo32(inst, 0x298, lower_32_bits(mask));
	nvkm_wo32(inst, 0x29c, upper_32_bits(mask));
	nvkm_done(inst);
	return 0;
}

static const struct nvkm_vmm_func
gv100_vmm = {
	.join = gv100_vmm_join,
	.part = gf100_vmm_part,
	.aper = gf100_vmm_aper,
	.valid = gp100_vmm_valid,
	.flush = gp100_vmm_flush,
	.mthd = gp100_vmm_mthd,
	.invalidate_pdb = gp100_vmm_invalidate_pdb,
	.page = {
		{ 47, &gp100_vmm_desc_16[4], NVKM_VMM_PAGE_Sxxx },
		{ 38, &gp100_vmm_desc_16[3], NVKM_VMM_PAGE_Sxxx },
		{ 29, &gp100_vmm_desc_16[2], NVKM_VMM_PAGE_Sxxx },
		{ 21, &gp100_vmm_desc_16[1], NVKM_VMM_PAGE_SVxC },
		{ 16, &gp100_vmm_desc_16[0], NVKM_VMM_PAGE_SVxC },
		{ 12, &gp100_vmm_desc_12[0], NVKM_VMM_PAGE_SVHx },
		{}
	}
};

int
gv100_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
	      void *argv, u32 argc, struct lock_class_key *key,
	      const char *name, struct nvkm_vmm **pvmm)
{
	return gp100_vmm_new_(&gv100_vmm, mmu, managed, addr, size,
			      argv, argc, key, name, pvmm);
}

Annotation

Implementation Notes