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, 45 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/fb_vgpu.c b/drivers/gpu/nvgpu/vgpu/fb_vgpu.c
new file mode 100644
index 00000000..cb7ea861
--- /dev/null
+++ b/drivers/gpu/nvgpu/vgpu/fb_vgpu.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 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"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <nvgpu/gk20a.h>
+#include <nvgpu/vgpu/tegra_vgpu.h>
+#include <nvgpu/vgpu/vgpu.h>
+
+#include "fb_vgpu.h"
+
+void vgpu_fb_set_mmu_debug_mode(struct gk20a *g, bool enable)
+{
+        struct tegra_vgpu_cmd_msg msg = {};
+        struct tegra_vgpu_fb_set_mmu_debug_mode_params *p =
+                                &msg.params.fb_set_mmu_debug_mode;
+        int err;
+
+        msg.cmd = TEGRA_VGPU_CMD_FB_SET_MMU_DEBUG_MODE;
+        msg.handle = vgpu_get_handle(g);
+        p->enable = enable ? 1U : 0U;
+        err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
+        err = err != 0 ? err : msg.ret;
+        if (err != 0) {
+                nvgpu_err(g,
+                        "fb set mmu debug mode failed err %d", err);
+        }
+}