gpu: nvgpu: add kernel APIs for TSG support

Add support to create/destroy TSGs using node "/dev/nvhost-tsg-gpu"

Provide below IOCTLs to bind/unbind channels to/from TSGs :

NVGPU_TSG_IOCTL_BIND_CHANNEL
NVGPU_TSG_IOCTL_UNBIND_CHANNEL

Bug 1470692

Change-Id: Iaf9f16a522379eb943906624548f8d28fc6d4486
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/416610

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 9769ac99..60b9b80e 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -40,6 +40,7 @@ struct acr_gm20b;
 #include "as_gk20a.h"
 #include "clk_gk20a.h"
 #include "fifo_gk20a.h"
+#include "tsg_gk20a.h"
 #include "gr_gk20a.h"
 #include "sim_gk20a.h"
 #include "pmu_gk20a.h"
@@ -308,6 +309,11 @@ struct gk20a {
                 struct device *node;
         } prof;
 
+        struct {
+                struct cdev cdev;
+                struct device *node;
+        } tsg;
+
         struct mutex client_lock;
         int client_refcount; /* open channels and ctrl nodes */