[PATCH v2 19/21] drm/xen: Introduce GEM object functions

Thomas Zimmermann
2020-09-15T23:00:58Z

GEM object functions deprecate several similar callback interfaces in
struct drm_driver. This patch replaces the per-driver callbacks with
per-instance callbacks in xen. The only exception is gem_prime_mmap,
which is non-trivial to convert.

v2:
* convert xen_drm_drv_free_object_unlocked() to static
callback (Oleksandr)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
---
drivers/gpu/drm/xen/xen_drm_front.c | 44 ++++++++++---------------
drivers/gpu/drm/xen/xen_drm_front.h | 2 ++
drivers/gpu/drm/xen/xen_drm_front_gem.c | 15 +++++++++
3 files changed, 34 insertions(+), 27 deletions(-)

diff --git a/drivers/gpu/drm/xen/xen_drm_front.c b/drivers/gpu/drm/xen/xen_drm_front.c
index cc93a8c9547b..98b6d2ba088a 100644
--- a/drivers/gpu/drm/xen/xen_drm_front.c
+++ b/drivers/gpu/drm/xen/xen_drm_front.c
@@ -381,6 +381,23 @@ void xen_drm_front_on_frame_done(struct xen_drm_front_info *front_info,
fb_cookie);
}

+void xen_drm_front_gem_object_free(struct drm_gem_object *obj)
+{
+ struct xen_drm_front_drm_info *drm_info = obj->dev->dev_private;
+ int idx;
+
+ if (drm_dev_enter(obj->dev, &idx)) {
+ xen_drm_front_dbuf_destroy(drm_info->front_info,
+ xen_drm_front_dbuf_to_cookie(obj));
+ drm_dev_exit(idx);
+ } else {
+ dbuf_free(&drm_info->front_info->dbuf_list,
+ xen_drm_front_dbuf_to_cookie(obj));
+ }
+
+ xen_drm_front_gem_free_object_unlocked(obj);
+}
+
static int xen_drm_drv_dumb_create(struct drm_file *filp,
struct drm_device *dev,
struct drm_mode_create_dumb *args)
@@ -435,23 +452,6 @@ static int xen_drm_drv_dumb_create(struct drm_file *filp,
return ret;
}

-static void xen_drm_drv_free_object_unlocked(struct drm_gem_object *obj)
-{
- struct xen_drm_front_drm_info *drm_info = obj->dev->dev_private;
- int idx;
-
- if (drm_dev_enter(obj->dev, &idx)) {
- xen_drm_front_dbuf_destroy(drm_info->front_info,
- xen_drm_front_dbuf_to_cookie(obj));
- drm_dev_exit(idx);
- } else {
- dbuf_free(&drm_info->front_info->dbuf_list,
- xen_drm_front_dbuf_to_cookie(obj));
- }
-
- xen_drm_front_gem_free_object_unlocked(obj);
-}
-
static void xen_drm_drv_release(struct drm_device *dev)
{
struct xen_drm_front_drm_info *drm_info = dev->dev_private;
@@ -483,22 +483,12 @@ static const struct file_operations xen_drm_dev_fops = {
.mmap = xen_drm_front_gem_mmap,
};

-static const struct vm_operations_struct xen_drm_drv_vm_ops = {
- .open = drm_gem_vm_open,
- .close = drm_gem_vm_close,
-};
-
static struct drm_driver xen_drm_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
.release = xen_drm_drv_release,
- .gem_vm_ops = &xen_drm_drv_vm_ops,
- .gem_free_object_unlocked = xen_drm_drv_free_object_unlocked,
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_import_sg_table = xen_drm_front_gem_import_sg_table,
- .gem_prime_get_sg_table = xen_drm_front_gem_get_sg_table,
- .gem_prime_vmap = xen_drm_front_gem_prime_vmap,
- .gem_prime_vunmap = xen_drm_front_gem_prime_vunmap,
.gem_prime_mmap = xen_drm_front_gem_prime_mmap,
.dumb_create = xen_drm_drv_dumb_create,
.fops = &xen_drm_dev_fops,
diff --git a/drivers/gpu/drm/xen/xen_drm_front.h b/drivers/gpu/drm/xen/xen_drm_front.h
index 54486d89650e..cefafe859aba 100644
--- a/drivers/gpu/drm/xen/xen_drm_front.h
+++ b/drivers/gpu/drm/xen/xen_drm_front.h
@@ -160,4 +160,6 @@ int xen_drm_front_page_flip(struct xen_drm_front_info *front_info,
void xen_drm_front_on_frame_done(struct xen_drm_front_info *front_info,
int conn_idx, u64 fb_cookie);

+void xen_drm_front_gem_object_free(struct drm_gem_object *obj);
+
#endif /* __XEN_DRM_FRONT_H_ */
diff --git a/drivers/gpu/drm/xen/xen_drm_front_gem.c b/drivers/gpu/drm/xen/xen_drm_front_gem.c
index a8aefaa38bd3..f3830a0d1808 100644
--- a/drivers/gpu/drm/xen/xen_drm_front_gem.c
+++ b/drivers/gpu/drm/xen/xen_drm_front_gem.c
@@ -57,6 +57,19 @@ static void gem_free_pages_array(struct xen_gem_object *xen_obj)
xen_obj->pages = NULL;
}

+static const struct vm_operations_struct xen_drm_drv_vm_ops = {
+ .open = drm_gem_vm_open,
+ .close = drm_gem_vm_close,
+};
+
+static const struct drm_gem_object_funcs xen_drm_front_gem_object_funcs = {
+ .free = xen_drm_front_gem_object_free,
+ .get_sg_table = xen_drm_front_gem_get_sg_table,
+ .vmap = xen_drm_front_gem_prime_vmap,
+ .vunmap = xen_drm_front_gem_prime_vunmap,
+ .vm_ops = &xen_drm_drv_vm_ops,
+};
+
static struct xen_gem_object *gem_create_obj(struct drm_device *dev,
size_t size)
{
@@ -67,6 +80,8 @@ static struct xen_gem_object *gem_create_obj(struct drm_device *dev,
if (!xen_obj)
return ERR_PTR(-ENOMEM);

+ xen_obj->base.funcs = &xen_drm_front_gem_object_funcs;
+
ret = drm_gem_object_init(dev, &xen_obj->base, size);
if (ret < 0) {
kfree(xen_obj);
--
2.28.0