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| author |   Ben Skeggs <bskeggs@redhat.com> | 2018-07-07 12:35:48 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2019-02-20 09:00:00 +1000 |
| commit | a5ff307fe1f2dfe91253e3c19586643a77b6ce52 (patch) | |
| tree | ca79c2065914a832ee99f576b01f033cd83ed183 /drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h | |
| parent | drm/nouveau/mmu: store mapped flag separately from memory pointer (diff) | |
| download | wireguard-linux-a5ff307fe1f2dfe91253e3c19586643a77b6ce52.tar.xz wireguard-linux-a5ff307fe1f2dfe91253e3c19586643a77b6ce52.zip | |
drm/nouveau/mmu: add a privileged method to directly manage PTEs
This provides a somewhat more direct method of manipulating the GPU page
tables, which will be required to support SVM.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h index e272e81ac292..3c74bba03138 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h @@ -67,6 +67,10 @@ struct nvkm_vmm_desc_func { nvkm_vmm_pte_func mem; nvkm_vmm_pte_func dma; nvkm_vmm_pte_func sgl; + + nvkm_vmm_pte_func pfn; + bool (*pfn_clear)(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32 ptei, u32 ptes); + nvkm_vmm_pxe_func pfn_unmap; }; extern const struct nvkm_vmm_desc_func gf100_vmm_pgd; @@ -166,8 +170,20 @@ int nvkm_vmm_get_locked(struct nvkm_vmm *, bool getref, bool mapref, bool sparse, u8 page, u8 align, u64 size, struct nvkm_vma **pvma); void nvkm_vmm_put_locked(struct nvkm_vmm *, struct nvkm_vma *); -void nvkm_vmm_unmap_locked(struct nvkm_vmm *, struct nvkm_vma *); -void nvkm_vmm_unmap_region(struct nvkm_vmm *vmm, struct nvkm_vma *vma); +void nvkm_vmm_unmap_locked(struct nvkm_vmm *, struct nvkm_vma *, bool pfn); +void nvkm_vmm_unmap_region(struct nvkm_vmm *, struct nvkm_vma *); + +#define NVKM_VMM_PFN_ADDR 0xfffffffffffff000ULL +#define NVKM_VMM_PFN_ADDR_SHIFT 12 +#define NVKM_VMM_PFN_APER 0x00000000000000f0ULL +#define NVKM_VMM_PFN_HOST 0x0000000000000000ULL +#define NVKM_VMM_PFN_VRAM 0x0000000000000010ULL +#define NVKM_VMM_PFN_W 0x0000000000000002ULL +#define NVKM_VMM_PFN_V 0x0000000000000001ULL +#define NVKM_VMM_PFN_NONE 0x0000000000000000ULL + +int nvkm_vmm_pfn_map(struct nvkm_vmm *, u8 page, u64 addr, u64 size, u64 *pfn); +int nvkm_vmm_pfn_unmap(struct nvkm_vmm *, u64 addr, u64 size); struct nvkm_vma *nvkm_vma_tail(struct nvkm_vma *, u64 tail); |