1 files changed, 17 insertions, 17 deletions

diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index 369d91e6361e..60eacd92e4d2 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -211,6 +211,13 @@ void msm_gem_put_pages(struct drm_gem_object *obj)
 	msm_gem_unlock(obj);
 }
 
+static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot)
+{
+	if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED))
+		return pgprot_writecombine(prot);
+	return prot;
+}
+
 int msm_gem_mmap_obj(struct drm_gem_object *obj,
 		struct vm_area_struct *vma)
 {
@@ -218,22 +225,7 @@ 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 {
-		/*
-		 * Shunt off cached objs to shmem file so they have their own
-		 * address_space (so unmap_mapping_range does what we want,
-		 * in particular in the case of mmap'd dmabufs)
-		 */
-		vma->vm_pgoff = 0;
-		vma_set_file(vma, obj->filp);
-
-		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;
 }
@@ -451,6 +443,9 @@ static int msm_gem_pin_iova(struct drm_gem_object *obj,
 	if (msm_obj->flags & MSM_BO_MAP_PRIV)
 		prot |= IOMMU_PRIV;
 
+	if (msm_obj->flags & MSM_BO_CACHED_COHERENT)
+		prot |= IOMMU_CACHE;
+
 	GEM_WARN_ON(!msm_gem_is_locked(obj));
 
 	if (GEM_WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED))
@@ -653,7 +648,7 @@ 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;
@@ -1164,6 +1159,7 @@ static int msm_gem_new_impl(struct drm_device *dev,
 		uint32_t size, uint32_t flags,
 		struct drm_gem_object **obj)
 {
+	struct msm_drm_private *priv = dev->dev_private;
 	struct msm_gem_object *msm_obj;
 
 	switch (flags & MSM_BO_CACHE_MASK) {
@@ -1171,6 +1167,10 @@ static int msm_gem_new_impl(struct drm_device *dev,
 	case MSM_BO_CACHED:
 	case MSM_BO_WC:
 		break;
+	case MSM_BO_CACHED_COHERENT:
+		if (priv->has_cached_coherent)
+			break;
+		/* fallthrough */
 	default:
 		DRM_DEV_ERROR(dev->dev, "invalid cache flag: %x\n",
 				(flags & MSM_BO_CACHE_MASK));