| Message ID | 20210423190833.25319-4-jonathan@marek.ca |
|---|---|
| State | Accepted |
| Commit | af9b3547079915d682d14ea98018d6fa6edf97ca |
| Headers | show |
| Series | drm/msm: add MSM_BO_CACHED_COHERENT (and related changes) | expand |
On Fri, Apr 23, 2021 at 03:08:19PM -0400, Jonathan Marek wrote: > Use the same logic as the userspace mapping. > > This fixes msm_rd with cached BOs. > Acked-by: Jordan Crouse <jordan@cosmicpenguin.net> > Signed-off-by: Jonathan Marek <jonathan@marek.ca> > --- > drivers/gpu/drm/msm/msm_gem.c | 19 +++++++++++-------- > 1 file changed, 11 insertions(+), 8 deletions(-) > > diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c > index 09abda42d764..0f58937be0a9 100644 > --- a/drivers/gpu/drm/msm/msm_gem.c > +++ b/drivers/gpu/drm/msm/msm_gem.c > @@ -199,6 +199,15 @@ void msm_gem_put_pages(struct drm_gem_object *obj) > /* when we start tracking the pin count, then do something here */ > } > > +static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot) > +{ > + if (msm_obj->flags & MSM_BO_WC) > + return pgprot_writecombine(prot); > + if (msm_obj->flags & MSM_BO_UNCACHED) > + return pgprot_noncached(prot); > + return prot; > +} > + > int msm_gem_mmap_obj(struct drm_gem_object *obj, > struct vm_area_struct *vma) > { > @@ -206,13 +215,7 @@ int msm_gem_mmap_obj(struct drm_gem_object *obj, > > vma->vm_flags &= ~VM_PFNMAP; > vma->vm_flags |= VM_MIXEDMAP; > - > - if (msm_obj->flags & MSM_BO_WC) > - vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); > - else if (msm_obj->flags & MSM_BO_UNCACHED) > - vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); > - else > - vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); > + vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); > > return 0; > } > @@ -632,7 +635,7 @@ static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) > goto fail; > } > msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, > - VM_MAP, pgprot_writecombine(PAGE_KERNEL)); > + VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); > if (msm_obj->vaddr == NULL) { > ret = -ENOMEM; > goto fail; > -- > 2.26.1 >
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 09abda42d764..0f58937be0a9 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -199,6 +199,15 @@ void msm_gem_put_pages(struct drm_gem_object *obj) /* when we start tracking the pin count, then do something here */ } +static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot) +{ + if (msm_obj->flags & MSM_BO_WC) + return pgprot_writecombine(prot); + if (msm_obj->flags & MSM_BO_UNCACHED) + return pgprot_noncached(prot); + return prot; +} + int msm_gem_mmap_obj(struct drm_gem_object *obj, struct vm_area_struct *vma) { @@ -206,13 +215,7 @@ int msm_gem_mmap_obj(struct drm_gem_object *obj, vma->vm_flags &= ~VM_PFNMAP; vma->vm_flags |= VM_MIXEDMAP; - - if (msm_obj->flags & MSM_BO_WC) - vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); - else if (msm_obj->flags & MSM_BO_UNCACHED) - vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); - else - vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + vma->vm_page_prot = msm_gem_pgprot(msm_obj, vm_get_page_prot(vma->vm_flags)); return 0; } @@ -632,7 +635,7 @@ static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) goto fail; } msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, - VM_MAP, pgprot_writecombine(PAGE_KERNEL)); + VM_MAP, msm_gem_pgprot(msm_obj, PAGE_KERNEL)); if (msm_obj->vaddr == NULL) { ret = -ENOMEM; goto fail;
Use the same logic as the userspace mapping. This fixes msm_rd with cached BOs. Signed-off-by: Jonathan Marek <jonathan@marek.ca> --- drivers/gpu/drm/msm/msm_gem.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-)