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, 5 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gv11b/hal_gv11b.c b/drivers/gpu/nvgpu/gv11b/hal_gv11b.c
index 5649d758..e6cf0e62 100644
--- a/drivers/gpu/nvgpu/gv11b/hal_gv11b.c
+++ b/drivers/gpu/nvgpu/gv11b/hal_gv11b.c
@@ -361,7 +361,7 @@ static const struct gpu_ops gv11b_ops = {
                 .set_czf_bypass = NULL,
                 .pre_process_sm_exception = gr_gv11b_pre_process_sm_exception,
                 .set_preemption_buffer_va = gr_gv11b_set_preemption_buffer_va,
-                .init_preemption_state = NULL,
+                .init_preemption_state = gr_gv11b_init_preemption_state,
                 .update_boosted_ctx = gr_gp10b_update_boosted_ctx,
                 .set_bes_crop_debug3 = gr_gp10b_set_bes_crop_debug3,
                 .create_gr_sysfs = gr_gv11b_create_sysfs,
@@ -388,6 +388,10 @@ static const struct gpu_ops gv11b_ops = {
                         gr_gv11b_handle_tpc_sm_ecc_exception,
                 .decode_egpc_addr = gv11b_gr_decode_egpc_addr,
                 .init_ctxsw_hdr_data = gr_gp10b_init_ctxsw_hdr_data,
+                .init_gfxp_wfi_timeout_count =
+                                gr_gv11b_init_gfxp_wfi_timeout_count,
+                .get_max_gfxp_wfi_timeout_count =
+                        gr_gv11b_get_max_gfxp_wfi_timeout_count,
         },
         .fb = {
                 .reset = gv11b_fb_reset,