gpu: nvgpu: Use TPC_PG_MASK to powergate the TPC

- In GV11B, read fuse_status_opt_tpc_gpc register
  to read which TPCs are floorswept.
- The driver will also read sysfs node: tpc_pg_mask
- Based on these two values "can_tpc_powergate" will
  be set to true or false and mask will be used to write to
  fuse_ctrl_opt_tpc_gpc register to powergate the TPC.
- can_tpc_powergate = true indicates that the mask value
  sent from userspace is valid and can be used to power gate
  the desired TPC
- can_tpc_powergate = false indicates that the mask value
  sent from userspace is not valid and cannot  be used to
  power gate the desired TPC.

Bug 200532639

Change-Id: Ib0806e4c96305a13b3574e8063ad8e16770aa7cd
Signed-off-by: Divya Singhatwaria <dsinghatwari@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2159219
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gv11b/hal_gv11b.c b/drivers/gpu/nvgpu/gv11b/hal_gv11b.c
index 6b4eeb88..2225e380 100644
--- a/drivers/gpu/nvgpu/gv11b/hal_gv11b.c
+++ b/drivers/gpu/nvgpu/gv11b/hal_gv11b.c
@@ -88,6 +88,7 @@
 #include "regops_gv11b.h"
 #include "subctx_gv11b.h"
 #include "ecc_gv11b.h"
+#include "tpc_gv11b.h"
 
 #include <nvgpu/ptimer.h>
 #include <nvgpu/debug.h>
@@ -859,6 +860,9 @@ static const struct gpu_ops gv11b_ops = {
         .acr = {
                 .acr_sw_init = nvgpu_gv11b_acr_sw_init,
         },
+        .tpc = {
+                .tpc_powergate = gv11b_tpc_powergate,
+        },
         .chip_init_gpu_characteristics = gv11b_init_gpu_characteristics,
         .get_litter_value = gv11b_get_litter_value,
 };
@@ -893,6 +897,7 @@ int gv11b_init_hal(struct gk20a *g)
         gops->falcon = gv11b_ops.falcon;
         gops->priv_ring = gv11b_ops.priv_ring;
         gops->fuse = gv11b_ops.fuse;
+        gops->tpc = gv11b_ops.tpc;
         gops->clk_arb = gv11b_ops.clk_arb;
         gops->acr = gv11b_ops.acr;