gpu: nvgpu: gv11b: gfxp wfi timeout

For gv11b, configured gfx preemption wfi timeout in usec.
Set timeout unit as usec in gr_gv11b_init_preemption_state.
Used default timeout as 1msec and this timeout value can
be modified through sysfs node:
/sys/devices/gpu.0/gfxp_wfi_timeout_count

For gp10b:
gfxp_wfi_timeout_count is in syclk cycles

For gv11b:
gfxp_wfi_timeout_count is in usec

Bug 2003668

Change-Id: I68d52ce996a83df90b8b3a8164debb07e5cb370f
Signed-off-by: seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1599658
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 8f3900a1..a361648f 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -433,7 +433,9 @@ struct gpu_ops {
                 void (*disable_rd_coalesce)(struct gk20a *g);
                 void (*init_ctxsw_hdr_data)(struct gk20a *g,
                                         struct nvgpu_mem *mem);
-
+                void (*init_gfxp_wfi_timeout_count)(struct gk20a *g);
+                unsigned long (*get_max_gfxp_wfi_timeout_count)
+                                        (struct gk20a *g);
         } gr;
         struct {
                 void (*init_hw)(struct gk20a *g);