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, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 9ab0d202..b3292ac4 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -445,6 +445,7 @@ struct gpu_ops {
                 int (*channel_set_timeslice)(struct channel_gk20a *ch,
                                         u32 timeslice);
                 int (*tsg_set_timeslice)(struct tsg_gk20a *tsg, u32 timeslice);
+                u32 (*default_timeslice_us)(struct gk20a *);
                 int (*force_reset_ch)(struct channel_gk20a *ch,
                                         u32 err_code, bool verbose);
                 int (*engine_enum_from_type)(struct gk20a *g, u32 engine_type,