gpu: nvgpu: add ioctls to get current timeslice

Add the following ioctls
- NVGPU_CHANNEL_IOCTL_GET_TIMESLICE for channel timeslice in us
- NVGPU_TSG_IOCTL_GET_TIMESLICE for TSG timeslice in us

If timeslice has not been set explicitly, ioctl returns the
default timeslice that will be used when programming the runlist
entry.

Bug 1883271

Change-Id: Ib18fdd836323b1a2d4efceb1e27d07713bd6fca5
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: http://git-master/r/1469040
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h
index 401722b1..e7d37221 100644
--- a/include/uapi/linux/nvgpu.h
+++ b/include/uapi/linux/nvgpu.h
@@ -968,11 +968,13 @@ struct nvgpu_gpu_set_event_filter_args {
         _IOW(NVGPU_TSG_IOCTL_MAGIC, 8, struct nvgpu_runlist_interleave_args)
 #define NVGPU_IOCTL_TSG_SET_TIMESLICE \
         _IOW(NVGPU_TSG_IOCTL_MAGIC, 9, struct nvgpu_timeslice_args)
+#define NVGPU_IOCTL_TSG_GET_TIMESLICE \
+        _IOR(NVGPU_TSG_IOCTL_MAGIC, 10, struct nvgpu_timeslice_args)
 
 #define NVGPU_TSG_IOCTL_MAX_ARG_SIZE    \
         sizeof(struct nvgpu_event_id_ctrl_args)
 #define NVGPU_TSG_IOCTL_LAST            \
-        _IOC_NR(NVGPU_IOCTL_TSG_SET_TIMESLICE)
+        _IOC_NR(NVGPU_IOCTL_TSG_GET_TIMESLICE)
 
 
 /*
@@ -1632,9 +1634,11 @@ struct nvgpu_boosted_ctx_args {
         _IOW(NVGPU_IOCTL_MAGIC, 123, struct nvgpu_alloc_gpfifo_ex_args)
 #define NVGPU_IOCTL_CHANNEL_SET_BOOSTED_CTX     \
         _IOW(NVGPU_IOCTL_MAGIC, 124, struct nvgpu_boosted_ctx_args)
+#define NVGPU_IOCTL_CHANNEL_GET_TIMESLICE \
+        _IOW(NVGPU_IOCTL_MAGIC, 125, struct nvgpu_timeslice_args)
 
 #define NVGPU_IOCTL_CHANNEL_LAST        \
-        _IOC_NR(NVGPU_IOCTL_CHANNEL_SET_BOOSTED_CTX)
+        _IOC_NR(NVGPU_IOCTL_CHANNEL_GET_TIMESLICE)
 #define NVGPU_IOCTL_CHANNEL_MAX_ARG_SIZE sizeof(struct nvgpu_alloc_gpfifo_ex_args)
 
 /*