admin/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-12-07 20:06:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

drm/nouveau/uvmm: Prepare for larger pages

Browse Source 
Currently memory allocated by VM_BIND uAPI can only have a  granuality
matching PAGE_SIZE (4KiB in common case)

To have a better memory management and to allow big (64KiB) and huge
(2MiB) pages later in the series, we are now passing the page shift all
around the internals of UVMM.

Signed-off-by: Mary Guillemard <mary@mary.zone>
Co-developed-by: Mohamed Ahmed <mohamedahmedegypt2001@gmail.com>
Signed-off-by: Mohamed Ahmed <mohamedahmedegypt2001@gmail.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: James Jones <jajones@nvidia.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patch.msgid.link/20251110-nouveau-compv6-v6-1-83b05475f57c@mary.zone
This commit is contained in:
Mary Guillemard
2025-11-10 16:32:56 +01:00
committed by Lyude Paul
parent 86db652fc2
commit 6d13495325
2 changed files with 30 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/gpu/drm/nouveau/nouveau_uvmm.c
View File

@@ -107,34 +107,34 @@ nouveau_uvmm_vmm_sparse_unref(struct nouveau_uvmm *uvmm,
static int
nouveau_uvmm_vmm_get(struct nouveau_uvmm *uvmm,
u64 addr, u64 range)
u64 addr, u64 range, u8 page_shift)
{
struct nvif_vmm *vmm = &uvmm->vmm.vmm;
return nvif_vmm_raw_get(vmm, addr, range, PAGE_SHIFT);
return nvif_vmm_raw_get(vmm, addr, range, page_shift);
}
static int
nouveau_uvmm_vmm_put(struct nouveau_uvmm *uvmm,
u64 addr, u64 range)
u64 addr, u64 range, u8 page_shift)
{
struct nvif_vmm *vmm = &uvmm->vmm.vmm;
return nvif_vmm_raw_put(vmm, addr, range, PAGE_SHIFT);
return nvif_vmm_raw_put(vmm, addr, range, page_shift);
}
static int
nouveau_uvmm_vmm_unmap(struct nouveau_uvmm *uvmm,
u64 addr, u64 range, bool sparse)
u64 addr, u64 range, u8 page_shift, bool sparse)
{
struct nvif_vmm *vmm = &uvmm->vmm.vmm;
return nvif_vmm_raw_unmap(vmm, addr, range, PAGE_SHIFT, sparse);
return nvif_vmm_raw_unmap(vmm, addr, range, page_shift, sparse);
}
static int
nouveau_uvmm_vmm_map(struct nouveau_uvmm *uvmm,
u64 addr, u64 range,
u64 addr, u64 range, u8 page_shift,
u64 bo_offset, u8 kind,
struct nouveau_mem *mem)
{
@@ -163,7 +163,7 @@ nouveau_uvmm_vmm_map(struct nouveau_uvmm *uvmm,
return -ENOSYS;
}
return nvif_vmm_raw_map(vmm, addr, range, PAGE_SHIFT,
return nvif_vmm_raw_map(vmm, addr, range, page_shift,
&args, argc,
&mem->mem, bo_offset);
}
@@ -182,8 +182,9 @@ nouveau_uvma_vmm_put(struct nouveau_uvma *uvma)
{
u64 addr = uvma->va.va.addr;
u64 range = uvma->va.va.range;
u8 page_shift = uvma->page_shift;
return nouveau_uvmm_vmm_put(to_uvmm(uvma), addr, range);
return nouveau_uvmm_vmm_put(to_uvmm(uvma), addr, range, page_shift);
}
static int
@@ -193,9 +194,11 @@ nouveau_uvma_map(struct nouveau_uvma *uvma,
u64 addr = uvma->va.va.addr;
u64 offset = uvma->va.gem.offset;
u64 range = uvma->va.va.range;
u8 page_shift = uvma->page_shift;
return nouveau_uvmm_vmm_map(to_uvmm(uvma), addr, range,
offset, uvma->kind, mem);
page_shift, offset, uvma->kind,
mem);
}
static int
@@ -203,12 +206,13 @@ nouveau_uvma_unmap(struct nouveau_uvma *uvma)
{
u64 addr = uvma->va.va.addr;
u64 range = uvma->va.va.range;
u8 page_shift = uvma->page_shift;
bool sparse = !!uvma->region;
if (drm_gpuva_invalidated(&uvma->va))
return 0;
return nouveau_uvmm_vmm_unmap(to_uvmm(uvma), addr, range, sparse);
return nouveau_uvmm_vmm_unmap(to_uvmm(uvma), addr, range, page_shift, sparse);
}
static int
@@ -501,7 +505,8 @@ nouveau_uvmm_sm_prepare_unwind(struct nouveau_uvmm *uvmm,
if (vmm_get_range)
nouveau_uvmm_vmm_put(uvmm, vmm_get_start,
vmm_get_range);
vmm_get_range,
PAGE_SHIFT);
break;
}
case DRM_GPUVA_OP_REMAP: {
@@ -528,6 +533,7 @@ nouveau_uvmm_sm_prepare_unwind(struct nouveau_uvmm *uvmm,
u64 ustart = va->va.addr;
u64 urange = va->va.range;
u64 uend = ustart + urange;
u8 page_shift = uvma_from_va(va)->page_shift;
/* Nothing to do for mappings we merge with. */
if (uend == vmm_get_start ||
@@ -538,7 +544,8 @@ nouveau_uvmm_sm_prepare_unwind(struct nouveau_uvmm *uvmm,
u64 vmm_get_range = ustart - vmm_get_start;
nouveau_uvmm_vmm_put(uvmm, vmm_get_start,
vmm_get_range);
vmm_get_range,
page_shift);
}
vmm_get_start = uend;
break;
@@ -592,6 +599,7 @@ op_map_prepare(struct nouveau_uvmm *uvmm,
uvma->region = args->region;
uvma->kind = args->kind;
uvma->page_shift = PAGE_SHIFT;
drm_gpuva_map(&uvmm->base, &uvma->va, op);
@@ -633,7 +641,8 @@ nouveau_uvmm_sm_prepare(struct nouveau_uvmm *uvmm,
if (vmm_get_range) {
ret = nouveau_uvmm_vmm_get(uvmm, vmm_get_start,
vmm_get_range);
vmm_get_range,
new->map->page_shift);
if (ret) {
op_map_prepare_unwind(new->map);
goto unwind;
@@ -689,6 +698,7 @@ nouveau_uvmm_sm_prepare(struct nouveau_uvmm *uvmm,
u64 ustart = va->va.addr;
u64 urange = va->va.range;
u64 uend = ustart + urange;
u8 page_shift = uvma_from_va(va)->page_shift;
op_unmap_prepare(u);
@@ -704,7 +714,7 @@ nouveau_uvmm_sm_prepare(struct nouveau_uvmm *uvmm,
u64 vmm_get_range = ustart - vmm_get_start;
ret = nouveau_uvmm_vmm_get(uvmm, vmm_get_start,
vmm_get_range);
vmm_get_range, page_shift);
if (ret) {
op_unmap_prepare_unwind(va);
goto unwind;
@@ -799,10 +809,11 @@ op_unmap_range(struct drm_gpuva_op_unmap *u,
u64 addr, u64 range)
{
struct nouveau_uvma *uvma = uvma_from_va(u->va);
u8 page_shift = uvma->page_shift;
bool sparse = !!uvma->region;
if (!drm_gpuva_invalidated(u->va))
nouveau_uvmm_vmm_unmap(to_uvmm(uvma), addr, range, sparse);
nouveau_uvmm_vmm_unmap(to_uvmm(uvma), addr, range, page_shift, sparse);
}
static void
@@ -882,6 +893,7 @@ nouveau_uvmm_sm_cleanup(struct nouveau_uvmm *uvmm,
struct drm_gpuva_op_map *n = r->next;
struct drm_gpuva *va = r->unmap->va;
struct nouveau_uvma *uvma = uvma_from_va(va);
u8 page_shift = uvma->page_shift;
if (unmap) {
u64 addr = va->va.addr;
@@ -893,7 +905,7 @@ nouveau_uvmm_sm_cleanup(struct nouveau_uvmm *uvmm,
if (n)
end = n->va.addr;
nouveau_uvmm_vmm_put(uvmm, addr, end - addr);
nouveau_uvmm_vmm_put(uvmm, addr, end - addr, page_shift);
}
nouveau_uvma_gem_put(uvma);

1
drivers/gpu/drm/nouveau/nouveau_uvmm.h
View File

@@ -33,6 +33,7 @@ struct nouveau_uvma {
struct nouveau_uvma_region *region;
u8 kind;
u8 page_shift;
};
#define uvmm_from_gpuvm(x) container_of((x), struct nouveau_uvmm, base)