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, 0 deletions

diff --git a/drivers/gpu/nvgpu/gv11b/gr_gv11b.h b/drivers/gpu/nvgpu/gv11b/gr_gv11b.h
index 1941f239..7c56f62d 100644
--- a/drivers/gpu/nvgpu/gv11b/gr_gv11b.h
+++ b/drivers/gpu/nvgpu/gv11b/gr_gv11b.h
@@ -213,5 +213,8 @@ void gv11b_gr_egpc_etpc_priv_addr_table(struct gk20a *g, u32 addr,
                  u32 gpc, u32 broadcast_flags, u32 *priv_addr_table, u32 *t);
 u32 gv11b_gr_get_egpc_base(struct gk20a *g);
 void gr_gv11b_init_gpc_mmu(struct gk20a *g);
+int gr_gv11b_init_preemption_state(struct gk20a *g);
+void gr_gv11b_init_gfxp_wfi_timeout_count(struct gk20a *g);
+unsigned long gr_gv11b_get_max_gfxp_wfi_timeout_count(struct gk20a *g);
 
 #endif