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, 2 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/gr_gp10b.h b/drivers/gpu/nvgpu/gp10b/gr_gp10b.h
index 55117022..3b0f0f2e 100644
--- a/drivers/gpu/nvgpu/gp10b/gr_gp10b.h
+++ b/drivers/gpu/nvgpu/gp10b/gr_gp10b.h
@@ -144,5 +144,7 @@ void gr_gp10b_set_preemption_buffer_va(struct gk20a *g,
 int gr_gp10b_set_czf_bypass(struct gk20a *g, struct channel_gk20a *ch);
 void gr_gp10b_init_czf_bypass(struct gk20a *g);
 void gr_gp10b_init_ctxsw_hdr_data(struct gk20a *g, struct nvgpu_mem *mem);
+void gr_gp10b_init_gfxp_wfi_timeout_count(struct gk20a *g);
+unsigned long gr_gp10b_get_max_gfxp_wfi_timeout_count(struct gk20a *g);
 
 #endif