linux-stable.git/include/drm/ttm, branch linux-5.0.y

drm/ttm: fix re-init of global structures

2019-05-02T08:02:47+00:00

commit bd4264112f93045704731850c5e4d85db981cd85 upstream.

When a driver unloads without unloading TTM we don't correctly
clear the global structures leading to errors on re-init.

Next step should probably be to remove the global structures and
kobjs all together, but this is tricky since we need to maintain
backward compatibility.

Signed-off-by: Christian König 
Reviewed-by: Karol Herbst 
Tested-by: Karol Herbst 
CC: stable@vger.kernel.org # 5.0.x
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

drm/ttm: allow reserving more than one shared slot v3

2018-12-07T22:53:44+00:00

Let's support simultaneous submissions to multiple engines.

v2: rename the field to num_shared and fix up all users
v3: rebased

Signed-off-by: Christian König 
Reviewed-by: Michel Dänzer 
Reviewed-by: Junwei Zhang 
Reviewed-by: Huang Rui 
Signed-off-by: Alex Deucher

drm: Remove drm_global.{c,h} v2

2018-11-05T19:21:21+00:00

The content of drm_global.{c,h} is obsolete.

v2: rebase on dropping TTM functionality

Signed-off-by: Thomas Zimmermann 
Signed-off-by: Christian König 
Reviewed-by: Junwei Zhang 
Signed-off-by: Alex Deucher

drm/ttm: initialize globals during device init (v2)

2018-11-05T19:21:21+00:00

Make sure that the global BO state is always correctly initialized.

This allows removing all the device code to initialize it.

v2: fix up vbox (Alex)

Signed-off-by: Christian König 
Reviewed-by: Junwei Zhang 
Signed-off-by: Alex Deucher

drm/ttm: use a static ttm_bo_global instance

2018-11-05T19:21:20+00:00

As the name says we only need one global instance of ttm_bo_global.

Just use a single exported instance which is save to initialize multiple times.

Signed-off-by: Christian König 
Reviewed-by: Junwei Zhang 
Signed-off-by: Alex Deucher

drm/ttm: make the device list mutex static

2018-11-05T19:21:19+00:00

This way it can protect the whole BO global state.

Signed-off-by: Christian König 
Reviewed-by: Junwei Zhang 
Signed-off-by: Alex Deucher

drm/ttm: use a static ttm_mem_global instance

2018-11-05T19:21:18+00:00

As the name says we only need one global instance of ttm_mem_global.

Drop all the driver initialization and just use a single exported
instance which is initialized during BO global initialization.

Signed-off-by: Christian König 
Reviewed-by: Junwei Zhang 
Signed-off-by: Alex Deucher

drm/ttm: Provide ttm_bo_global_{init/release}() for struct ttm_bo_global

2018-11-05T19:20:52+00:00

So far, struct ttm_bo_global_ref was the only way of initializing a struct
ttm_bo_global. Providing separate initializer and release functions for
struct ttm_bo_global gives drivers the option of implementing their own
init and release callbacks for drm_global_references of type
DRM_GLOBAL_TTM_BO.

The original functions for initializing and releasing via struct
ttm_bo_global_ref are wrappers around the new interfaces.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Christian König 
Signed-off-by: Alex Deucher

drm/ttm: Rename ttm_bo_global_{init,release}() to ttm_bo_global_ref_{,}()

2018-11-05T19:20:52+00:00

The functions ttm_bo_global_init() and ttm_bo_global_release() do not
receive an argument of type struct ttm_bo_global. Both take a struct
drm_global_reference that contains points to a struct ttm_bo_global_ref.
Renaming them reflects this.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Christian König 
Signed-off-by: Alex Deucher

drm/ttm: Export ttm_bo_get_unless_zero()

2018-09-28T06:55:10+00:00

Export ttm_bo_get_unless_zero() to be used when looking up buffer
objects that are removed from the lookup structure in the destructor.

Signed-off-by: Thomas Hellstrom 
Reviewed-by: Sinclair Yeh 
Reviewed-by: Christian König