gpu: nvgpu: vgpu: add mmu_debug_mode support

Added two new IVC commands that set gr and fb mmu debug mode.

Bug 2586624

Change-Id: I358fb04713a9754fb209c0a90d02130dd4a1caf6
Reviewed-on: https://git-master.nvidia.com/r/2204980
(cherry picked from commit db4e5b09891aff075dfffb7cc2fe0630a71ab9a6)
Signed-off-by: Aparna Das <aparnad@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2288347
Reviewed-by: Kajetan Dutka <kdutka@nvidia.com>
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: Kajetan Dutka <kdutka@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 19 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/gr_vgpu.c b/drivers/gpu/nvgpu/vgpu/gr_vgpu.c
index e3b1888e..cb4a441a 100644
--- a/drivers/gpu/nvgpu/vgpu/gr_vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/gr_vgpu.c
@@ -1,7 +1,7 @@
 /*
  * Virtualized GPU Graphics
  *
- * Copyright (c) 2014-2018, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014-2020, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -1378,3 +1378,21 @@ int vgpu_gr_update_pc_sampling(struct channel_gk20a *ch, bool enable)
 
         return err ? err : msg.ret;
 }
+
+int vgpu_gr_set_mmu_debug_mode(struct gk20a *g,
+                struct channel_gk20a *ch, bool enable)
+{
+        struct tegra_vgpu_cmd_msg msg = {};
+        struct tegra_vgpu_gr_set_mmu_debug_mode_params *p =
+                                        &msg.params.gr_set_mmu_debug_mode;
+        int err;
+
+        msg.cmd = TEGRA_VGPU_CMD_GR_SET_MMU_DEBUG_MODE;
+        msg.handle = vgpu_get_handle(g);
+        p->ch_handle = ch->virt_ctx;
+        p->enable = enable ? 1U : 0U;
+        err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
+        WARN_ON(err || msg.ret);
+
+        return err ? err : msg.ret;
+}