search for: fpde

...re/subdev/vm/base.c b/drivers/gpu/drm/nouveau/core/subdev/vm/base.c index 77c67fc..e66fb77 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/vm/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/vm/base.c @@ -362,7 +362,7 @@ nouveau_vm_create(struct nouveau_vmmgr *vmm, u64 offset, u64 length, vm->fpde = offset >> (vmm->pgt_bits + 12); vm->lpde = (offset + length - 1) >> (vmm->pgt_bits + 12); - vm->pgt = kcalloc(vm->lpde - vm->fpde + 1, sizeof(*vm->pgt), GFP_KERNEL); + vm->pgt = vzalloc((vm->lpde - vm->fpde + 1) * sizeof(*vm->pgt)); if (!vm-&gt...

...nouveau_vm_ref(vm, &vma->vm, NULL); vma->offset = (u64)vma->node->offset << 12; #ifdef NOUVEAU_VM_POISON if (vm->poison) @@ -353,7 +355,7 @@ nouveau_vm_put(struct nouveau_vma *vma) { struct nouveau_vm *vm = vma->vm; struct nouveau_vmmgr *vmm = vm->vmm; - u32 fpde, lpde; + u32 fpde, lpde, ref; if (unlikely(vma->node == NULL)) return; @@ -363,9 +365,12 @@ nouveau_vm_put(struct nouveau_vma *vma) mutex_lock(&nv_subdev(vmm)->mutex); nouveau_vm_unmap_pgt(vm, vma->node->type != vmm->spg_shift, fpde, lpde); nouveau_mm_free(&vm-&g...

...vers/gpu/drm/nouveau/core/subdev/vm/base.c > index 77c67fc..e66fb77 100644 > --- a/drivers/gpu/drm/nouveau/core/subdev/vm/base.c > +++ b/drivers/gpu/drm/nouveau/core/subdev/vm/base.c > @@ -362,7 +362,7 @@ nouveau_vm_create(struct nouveau_vmmgr *vmm, u64 offset, u64 length, > vm->fpde = offset >> (vmm->pgt_bits + 12); > vm->lpde = (offset + length - 1) >> (vmm->pgt_bits + 12); > > - vm->pgt = kcalloc(vm->lpde - vm->fpde + 1, sizeof(*vm->pgt), GFP_KERNEL); > + vm->pgt = vzalloc((vm->lpde - vm->fpde + 1) * sizeof(*vm->...

...hift != vmm->spg_shift; u32 offset = vma->node->offset + (delta >> 12); - u32 bits = vma->node->type - 12; - u32 num = length >> vma->node->type; + u32 bits = shift - 12; + u32 num = length >> shift; u32 pde = (offset >> vmm->pgt_bits) - vm->fpde; u32 pte = (offset & ((1 << vmm->pgt_bits) - 1)) >> bits; u32 max = 1 << (vmm->pgt_bits - bits); @@ -98,7 +99,7 @@ nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length, for_each_sg(mem->sg->sgl, sg, mem->sg->nents, i) { struct n...

...node->offset + (delta >> 12); > > - u32 bits = vma->node->type - 12; > > - u32 num = length >> vma->node->type; > > + u32 bits = shift - 12; > > + u32 num = length >> shift; > > u32 pde = (offset >> vmm->pgt_bits) - vm->fpde; > > u32 pte = (offset & ((1 << vmm->pgt_bits) - 1)) >> bits; > > u32 max = 1 << (vmm->pgt_bits - bits); > > @@ -98,7 +99,7 @@ nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length, > > > > for_each_sg(mem->sg-&...

...; u32 offset = vma->node->offset + (delta >> 12); > - u32 bits = vma->node->type - 12; > - u32 num = length >> vma->node->type; > + u32 bits = shift - 12; > + u32 num = length >> shift; > u32 pde = (offset >> vmm->pgt_bits) - vm->fpde; > u32 pte = (offset & ((1 << vmm->pgt_bits) - 1)) >> bits; > u32 max = 1 << (vmm->pgt_bits - bits); > @@ -98,7 +99,7 @@ nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length, > > for_each_sg(mem->sg->sgl, sg, mem->sg-&g...

...gt; 12); >> > - u32 bits = vma->node->type - 12; >> > - u32 num = length >> vma->node->type; >> > + u32 bits = shift - 12; >> > + u32 num = length >> shift; >> > u32 pde = (offset >> vmm->pgt_bits) - vm->fpde; >> > u32 pte = (offset & ((1 << vmm->pgt_bits) - 1)) >> bits; >> > u32 max = 1 << (vmm->pgt_bits - bits); >> > @@ -98,7 +99,7 @@ nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length, >> > >> >...

...ode->offset + (delta >> 12); - u32 bits = vma->node->type - 12; - u32 num = length >> vma->node->type; + u32 shift = vma->node->type; + u32 order = PAGE_SHIFT - shift; + u32 num = length >> PAGE_SHIFT; u32 pde = (offset >> vmm->pgt_bits) - vm->fpde; - u32 pte = (offset & ((1 << vmm->pgt_bits) - 1)) >> bits; - u32 max = 1 << (vmm->pgt_bits - bits); - unsigned m, sglen; - u32 end, len; + u32 pte = offset & ((1 << vmm->pgt_bits) - 1); + u32 max = 1 << vmm->pgt_bits; + u32 end, len, cardlen;...

Op 11-08-13 07:36, Benjamin Herrenschmidt schreef: > On Sun, 2013-08-11 at 10:41 +1000, Benjamin Herrenschmidt wrote: >> Now, to do that, I need a better understanding of the various things >> in there since I'm not familiar with nouveau at all. What I think I've >> figured out is with a few questions, it would be awesome if you could >> answer them so I can have

...>node->type - 12; > - u32 num = length >> vma->node->type; > + u32 shift = vma->node->type; > + u32 order = PAGE_SHIFT - shift; > + u32 num = length >> PAGE_SHIFT; > u32 pde = (offset >> vmm->pgt_bits) - vm->fpde; > - u32 pte = (offset & ((1 << vmm->pgt_bits) - 1)) >> bits; > - u32 max = 1 << (vmm->pgt_bits - bits); > - unsigned m, sglen; > - u32 end, len; > + u32 pte = offset & ((1 << vmm->pgt_bits) - 1); > +...

Hi, Generally the the imported buffers which has memory type TTM_PL_TT are mapped as small pages probably due to lack of big page allocation. But the platform device which also use memory type TTM_PL_TT, like GK20A, can *allocate* big page though the IOMMU hardware inside the SoC. This is a try to map the imported buffers as big pages in GMMU by the platform IOMMU. With some preparation work to