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path: root/drivers/gpu/drm/exynos/exynos_drm_gem.c
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Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_gem.c')
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_gem.c89
1 files changed, 77 insertions, 12 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 1dffa8359f88..fc91293c4560 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -66,6 +66,22 @@ static int check_gem_flags(unsigned int flags)
return 0;
}
+static void update_vm_cache_attr(struct exynos_drm_gem_obj *obj,
+ struct vm_area_struct *vma)
+{
+ DRM_DEBUG_KMS("flags = 0x%x\n", obj->flags);
+
+ /* non-cachable as default. */
+ if (obj->flags & EXYNOS_BO_CACHABLE)
+ vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
+ else if (obj->flags & EXYNOS_BO_WC)
+ vma->vm_page_prot =
+ pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
+ else
+ vma->vm_page_prot =
+ pgprot_noncached(vm_get_page_prot(vma->vm_flags));
+}
+
static unsigned long roundup_gem_size(unsigned long size, unsigned int flags)
{
if (!IS_NONCONTIG_BUFFER(flags)) {
@@ -80,7 +96,7 @@ out:
return roundup(size, PAGE_SIZE);
}
-static struct page **exynos_gem_get_pages(struct drm_gem_object *obj,
+struct page **exynos_gem_get_pages(struct drm_gem_object *obj,
gfp_t gfpmask)
{
struct inode *inode;
@@ -180,6 +196,7 @@ static int exynos_drm_gem_get_pages(struct drm_gem_object *obj)
}
npages = obj->size >> PAGE_SHIFT;
+ buf->page_size = PAGE_SIZE;
buf->sgt = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
if (!buf->sgt) {
@@ -262,24 +279,24 @@ static int exynos_drm_gem_handle_create(struct drm_gem_object *obj,
void exynos_drm_gem_destroy(struct exynos_drm_gem_obj *exynos_gem_obj)
{
struct drm_gem_object *obj;
+ struct exynos_drm_gem_buf *buf;
DRM_DEBUG_KMS("%s\n", __FILE__);
- if (!exynos_gem_obj)
- return;
-
obj = &exynos_gem_obj->base;
+ buf = exynos_gem_obj->buffer;
DRM_DEBUG_KMS("handle count = %d\n", atomic_read(&obj->handle_count));
- if ((exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) &&
- exynos_gem_obj->buffer->pages)
+ if (!buf->pages)
+ return;
+
+ if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG)
exynos_drm_gem_put_pages(obj);
else
- exynos_drm_free_buf(obj->dev, exynos_gem_obj->flags,
- exynos_gem_obj->buffer);
+ exynos_drm_free_buf(obj->dev, exynos_gem_obj->flags, buf);
- exynos_drm_fini_buf(obj->dev, exynos_gem_obj->buffer);
+ exynos_drm_fini_buf(obj->dev, buf);
exynos_gem_obj->buffer = NULL;
if (obj->map_list.map)
@@ -292,7 +309,7 @@ void exynos_drm_gem_destroy(struct exynos_drm_gem_obj *exynos_gem_obj)
exynos_gem_obj = NULL;
}
-static struct exynos_drm_gem_obj *exynos_drm_gem_init(struct drm_device *dev,
+struct exynos_drm_gem_obj *exynos_drm_gem_init(struct drm_device *dev,
unsigned long size)
{
struct exynos_drm_gem_obj *exynos_gem_obj;
@@ -493,8 +510,7 @@ static int exynos_drm_gem_mmap_buffer(struct file *filp,
vma->vm_flags |= (VM_IO | VM_RESERVED);
- /* in case of direct mapping, always having non-cachable attribute */
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ update_vm_cache_attr(exynos_gem_obj, vma);
vm_size = usize = vma->vm_end - vma->vm_start;
@@ -588,6 +604,32 @@ int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data,
return 0;
}
+int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{ struct exynos_drm_gem_obj *exynos_gem_obj;
+ struct drm_exynos_gem_info *args = data;
+ struct drm_gem_object *obj;
+
+ mutex_lock(&dev->struct_mutex);
+
+ obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+ if (!obj) {
+ DRM_ERROR("failed to lookup gem object.\n");
+ mutex_unlock(&dev->struct_mutex);
+ return -EINVAL;
+ }
+
+ exynos_gem_obj = to_exynos_gem_obj(obj);
+
+ args->flags = exynos_gem_obj->flags;
+ args->size = exynos_gem_obj->size;
+
+ drm_gem_object_unreference(obj);
+ mutex_unlock(&dev->struct_mutex);
+
+ return 0;
+}
+
int exynos_drm_gem_init_object(struct drm_gem_object *obj)
{
DRM_DEBUG_KMS("%s\n", __FILE__);
@@ -597,8 +639,17 @@ int exynos_drm_gem_init_object(struct drm_gem_object *obj)
void exynos_drm_gem_free_object(struct drm_gem_object *obj)
{
+ struct exynos_drm_gem_obj *exynos_gem_obj;
+ struct exynos_drm_gem_buf *buf;
+
DRM_DEBUG_KMS("%s\n", __FILE__);
+ exynos_gem_obj = to_exynos_gem_obj(obj);
+ buf = exynos_gem_obj->buffer;
+
+ if (obj->import_attach)
+ drm_prime_gem_destroy(obj, buf->sgt);
+
exynos_drm_gem_destroy(to_exynos_gem_obj(obj));
}
@@ -724,6 +775,8 @@ int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
{
+ struct exynos_drm_gem_obj *exynos_gem_obj;
+ struct drm_gem_object *obj;
int ret;
DRM_DEBUG_KMS("%s\n", __FILE__);
@@ -735,8 +788,20 @@ int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
return ret;
}
+ obj = vma->vm_private_data;
+ exynos_gem_obj = to_exynos_gem_obj(obj);
+
+ ret = check_gem_flags(exynos_gem_obj->flags);
+ if (ret) {
+ drm_gem_vm_close(vma);
+ drm_gem_free_mmap_offset(obj);
+ return ret;
+ }
+
vma->vm_flags &= ~VM_PFNMAP;
vma->vm_flags |= VM_MIXEDMAP;
+ update_vm_cache_attr(exynos_gem_obj, vma);
+
return ret;
}