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drm/etnaviv: switch to PFN mappings

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There is no reason to use page based mappings, as the established
mappings are special driver mappings anyways and should not be
handled like normal pages.

Be consistent with what other drivers do and use raw PFN based
mappings.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Lucas Stach 2022-09-09 11:20:44 +02:00
parent 1f5896ca6e
commit a3b4c2f9b0
1 changed files with 6 additions and 5 deletions
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11
drivers/gpu/drm/etnaviv/etnaviv_gem.c
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@ -130,7 +130,7 @@ static int etnaviv_gem_mmap_obj(struct etnaviv_gem_object *etnaviv_obj,
{
pgprot_t vm_page_prot;
vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP;
vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
vm_page_prot = vm_get_page_prot(vma->vm_flags);
@ -165,7 +165,8 @@ static vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf)
struct vm_area_struct *vma = vmf->vma;
struct drm_gem_object *obj = vma->vm_private_data;
struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
struct page **pages, *page;
struct page **pages;
unsigned long pfn;
pgoff_t pgoff;
int err;
@ -189,12 +190,12 @@ static vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf)
/* We don't use vmf->pgoff since that has the fake offset: */
pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT;
page = pages[pgoff];
pfn = page_to_pfn(pages[pgoff]);
VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address,
page_to_pfn(page), page_to_pfn(page) << PAGE_SHIFT);
pfn, pfn << PAGE_SHIFT);
return vmf_insert_page(vma, vmf->address, page);
return vmf_insert_pfn(vma, vmf->address, pfn);
}
int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset)