drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgk104.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgk104.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgk104.c
Extension
.c
Size
3126 bytes
Lines
105
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

#include "vmm.h"

void
gk104_vmm_lpt_invalid(struct nvkm_vmm *vmm,
		      struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
{
	/* VALID_FALSE + PRIV tells the MMU to ignore corresponding SPTEs. */
	VMM_FO064(pt, vmm, ptei * 8, BIT_ULL(1) /* PRIV. */, ptes);
}

static const struct nvkm_vmm_desc_func
gk104_vmm_lpt = {
	.invalid = gk104_vmm_lpt_invalid,
	.unmap = gf100_vmm_pgt_unmap,
	.mem = gf100_vmm_pgt_mem,
};

const struct nvkm_vmm_desc
gk104_vmm_desc_17_12[] = {
	{ SPT, 15, 8, 0x1000, &gf100_vmm_pgt },
	{ PGD, 13, 8, 0x1000, &gf100_vmm_pgd },
	{}
};

const struct nvkm_vmm_desc
gk104_vmm_desc_17_17[] = {
	{ LPT, 10, 8, 0x1000, &gk104_vmm_lpt },
	{ PGD, 13, 8, 0x1000, &gf100_vmm_pgd },
	{}
};

const struct nvkm_vmm_desc
gk104_vmm_desc_16_12[] = {
	{ SPT, 14, 8, 0x1000, &gf100_vmm_pgt },
	{ PGD, 14, 8, 0x1000, &gf100_vmm_pgd },
	{}
};

const struct nvkm_vmm_desc
gk104_vmm_desc_16_16[] = {
	{ LPT, 10, 8, 0x1000, &gk104_vmm_lpt },
	{ PGD, 14, 8, 0x1000, &gf100_vmm_pgd },
	{}
};

static const struct nvkm_vmm_func
gk104_vmm_17 = {
	.join = gf100_vmm_join,
	.part = gf100_vmm_part,
	.aper = gf100_vmm_aper,
	.valid = gf100_vmm_valid,
	.flush = gf100_vmm_flush,
	.invalidate_pdb = gf100_vmm_invalidate_pdb,
	.page = {
		{ 17, &gk104_vmm_desc_17_17[0], NVKM_VMM_PAGE_xVxC },
		{ 12, &gk104_vmm_desc_17_12[0], NVKM_VMM_PAGE_xVHx },
		{}
	}
};

static const struct nvkm_vmm_func
gk104_vmm_16 = {
	.join = gf100_vmm_join,
	.part = gf100_vmm_part,
	.aper = gf100_vmm_aper,
	.valid = gf100_vmm_valid,
	.flush = gf100_vmm_flush,
	.invalidate_pdb = gf100_vmm_invalidate_pdb,
	.page = {
		{ 16, &gk104_vmm_desc_16_16[0], NVKM_VMM_PAGE_xVxC },
		{ 12, &gk104_vmm_desc_16_12[0], NVKM_VMM_PAGE_xVHx },
		{}
	}
};

int
gk104_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 gf100_vmm_new_(&gk104_vmm_16, &gk104_vmm_17, mmu, managed, addr,
			      size, argv, argc, key, name, pvmm);
}

Annotation

Implementation Notes