drm/amdgpu: Add H/W agnostic amdgpu <--> amdkfd interface

This patch adds an interface file between amdgpu and amdkfd. This
interface file is H/W agnostic, thus containing functions that
operate the same for any AMD APU/GPU H/W generation.

The functions in this interface mirror (some) of the functions in
radeon_kfd.c (the radeon<-->amdkfd interface file). The main functions
are:

- amdgpu_amdkfd_init - initialize the amdkfd module
- amdgpu_amdkfd_load_interface - load the H/W interface according to the
  currently probed device
- amdgpu_amdkfd_device_probe - probe the device in amdkfd
- amdgpu_amdkfd_device_init - initialize the device in amdkfd
- amdgpu_amdkfd_interrupt - call the ISR of amdkfd
- amdgpu_amdkfd_suspend - suspend callback from amdgpu
- amdgpu_amdkfd_resume - resume callback from amdgpu

This patch also modifies the relevant amdgpu files, to use this new
interface.

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index a2264167791a..8012189d358f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -636,6 +636,8 @@ M:	Oded Gabbay <oded.gabbay@gmail.com>
 L:      dri-devel@lists.freedesktop.org
 T:      git git://people.freedesktop.org/~gabbayo/linux.git
 S:      Supported
+F:      drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
+F:      drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
 F:      drivers/gpu/drm/amd/amdkfd/
 F:      drivers/gpu/drm/amd/include/cik_structs.h
 F:      drivers/gpu/drm/amd/include/kgd_kfd_interface.h