gpu: nvgpu: move debug dump to HAL

Move the debug dump to HAL and add a stub for vgpu.

Bug 1595164

Change-Id: Ifdcdd8a8caca7a41919dad075fee1c87032f53b0
Signed-off-by: Aingara Paramakuru <aparamakuru@nvidia.com>
Reviewed-on: http://git-master/r/662722
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

drivers/gpu/nvgpu/Makefile

@@ -58,7 +58,8 @@ nvgpu-y := \
 	gm20b/pmu_gm20b.o \
 	gm20b/mm_gm20b.o \
 	gm20b/regops_gm20b.o \
-	gm20b/mc_gm20b.o
+	gm20b/mc_gm20b.o \
+	gm20b/debug_gm20b.o
 
 nvgpu-$(CONFIG_TEGRA_GK20A) += gk20a/platform_gk20a_tegra.o
 nvgpu-$(CONFIG_SYNC) += gk20a/sync_gk20a.o
@@ -69,6 +70,7 @@ nvgpu-$(CONFIG_TEGRA_GR_VIRTUALIZATION) += \
 	vgpu/gr_vgpu.o \
 	vgpu/fifo_vgpu.o \
 	vgpu/mm_vgpu.o \
+	vgpu/debug_vgpu.o \
 	vgpu/vgpu.o
 
 nvgpu-$(CONFIG_TEGRA_CLK_FRAMEWORK) += \

drivers/gpu/nvgpu/gk20a/debug_gk20a.c

@@ -1,7 +1,7 @@
 /*
  * drivers/video/tegra/host/t20/debug_gk20a.c
  *
- * Copyright (C) 2011-2014 NVIDIA Corporation.  All rights reserved.
+ * Copyright (C) 2011-2015 NVIDIA Corporation.  All rights reserved.
  *
  * This software is licensed under the terms of the GNU General Public
  * License version 2, as published by the Free Software Foundation, and
@@ -34,12 +34,6 @@
 unsigned int gk20a_debug_trace_cmdbuf;
 static struct platform_device *gk20a_device;
 
-struct gk20a_debug_output {
-	void (*fn)(void *ctx, const char *str, size_t len);
-	void *ctx;
-	char buf[256];
-};
-
 static const char * const ccsr_chan_status_str[] = {
 	"idle",
 	"pending",
@@ -160,11 +154,8 @@ static void gk20a_debug_show_channel(struct gk20a *g,
 	gk20a_debug_output(o, "\n");
 }
 
-static void gk20a_debug_show_dump(struct platform_device *pdev,
+void gk20a_debug_show_dump(struct gk20a *g, struct gk20a_debug_output *o)
-			   struct gk20a_debug_output *o)
 {
-	struct gk20a_platform *platform = gk20a_get_platform(pdev);
-	struct gk20a *g = platform->g;
 	struct fifo_gk20a *f = &g->fifo;
 	u32 chid;
 	int i, err;
@@ -235,6 +226,7 @@ static void gk20a_debug_show_dump(struct platform_device *pdev,
 void gk20a_debug_dump(struct platform_device *pdev)
 {
 	struct gk20a_platform *platform = gk20a_get_platform(pdev);
+	struct gk20a *g = platform->g;
 	struct gk20a_debug_output o = {
 		.fn = gk20a_debug_write_printk
 	};
@@ -242,7 +234,9 @@ void gk20a_debug_dump(struct platform_device *pdev)
 	if (platform->dump_platform_dependencies)
 		platform->dump_platform_dependencies(pdev);
 
-	gk20a_debug_show_dump(pdev, &o);
+	/* HAL only initialized after 1st power-on */
+	if (g->ops.debug.show_dump)
+		g->ops.debug.show_dump(g, &o);
 }
 
 void gk20a_debug_dump_device(struct platform_device *pdev)
@@ -250,6 +244,7 @@ void gk20a_debug_dump_device(struct platform_device *pdev)
 	struct gk20a_debug_output o = {
 		.fn = gk20a_debug_write_printk
 	};
+	struct gk20a *g;
 
 	/* Dump the first device if no info is provided */
 	if (!pdev) {
@@ -259,7 +254,10 @@ void gk20a_debug_dump_device(struct platform_device *pdev)
 		pdev = gk20a_device;
 	}
 
-	gk20a_debug_show_dump(pdev, &o);
+	g = gk20a_get_platform(pdev)->g;
+	/* HAL only initialized after 1st power-on */
+	if (g->ops.debug.show_dump)
+		g->ops.debug.show_dump(g, &o);
 }
 EXPORT_SYMBOL(gk20a_debug_dump_device);
 
@@ -270,7 +268,12 @@ static int gk20a_debug_show(struct seq_file *s, void *unused)
 		.fn = gk20a_debug_write_to_seqfile,
 		.ctx = s,
 	};
-	gk20a_debug_show_dump(pdev, &o);
+	struct gk20a *g;
+
+	g = gk20a_get_platform(pdev)->g;
+	/* HAL only initialized after 1st power-on */
+	if (g->ops.debug.show_dump)
+		g->ops.debug.show_dump(g, &o);
 	return 0;
 }
 
@@ -286,6 +289,11 @@ static const struct file_operations gk20a_debug_fops = {
 	.release	= single_release,
 };
 
+void gk20a_init_debug_ops(struct gpu_ops *gops)
+{
+	gops->debug.show_dump = gk20a_debug_show_dump;
+}
+
 void gk20a_debug_init(struct platform_device *pdev)
 {
 	struct gk20a_platform *platform = platform_get_drvdata(pdev);

drivers/gpu/nvgpu/gk20a/debug_gk20a.h

@@ -1,7 +1,7 @@
 /*
  * GK20A Debug functionality
  *
- * Copyright (C) 2011-2014 NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (C) 2011-2015 NVIDIA CORPORATION.  All rights reserved.
  *
  * This software is licensed under the terms of the GNU General Public
  * License version 2, as published by the Free Software Foundation, and
@@ -18,10 +18,20 @@
 #define _DEBUG_GK20A_H_
 
 struct platform_device;
+struct gk20a;
+struct gpu_ops;
 
 extern unsigned int gk20a_debug_trace_cmdbuf;
 
+struct gk20a_debug_output {
+	void (*fn)(void *ctx, const char *str, size_t len);
+	void *ctx;
+	char buf[256];
+};
+
 void gk20a_debug_dump(struct platform_device *pdev);
+void gk20a_debug_show_dump(struct gk20a *g, struct gk20a_debug_output *o);
 void gk20a_debug_init(struct platform_device *pdev);
+void gk20a_init_debug_ops(struct gpu_ops *gops);
 
 #endif

drivers/gpu/nvgpu/gk20a/gk20a.h

@@ -1,7 +1,7 @@
 /*
  * GK20A Graphics
  *
- * Copyright (c) 2011-2014, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2011-2015, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -47,6 +47,7 @@ struct acr_gm20b;
 #include "platform_gk20a.h"
 #include "gm20b/acr_gm20b.h"
 #include "cde_gk20a.h"
+#include "debug_gk20a.h"
 
 struct cooling_device_gk20a {
 	struct thermal_cooling_device *gk20a_cooling_dev;
@@ -367,6 +368,10 @@ struct gpu_ops {
 		irqreturn_t (*isr_thread_nonstall)(struct gk20a *g);
 		u32 intr_mask_restore[4];
 	} mc;
+	struct {
+		void (*show_dump)(struct gk20a *g,
+				struct gk20a_debug_output *o);
+	} debug;
 };
 
 struct gk20a {

drivers/gpu/nvgpu/gk20a/hal_gk20a.c

@@ -3,7 +3,7 @@
  *
  * GK20A Tegra HAL interface.
  *
- * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014-2015, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -62,6 +62,7 @@ int gk20a_init_hal(struct gk20a *g)
 	gk20a_init_pmu_ops(gops);
 	gk20a_init_clk_ops(gops);
 	gk20a_init_regops(gops);
+	gk20a_init_debug_ops(gops);
 	gops->name = "gk20a";
 
 	c->twod_class = FERMI_TWOD_A;

drivers/gpu/nvgpu/gm20b/debug_gm20b.c

@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2015 NVIDIA Corporation.  All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include "gk20a/gk20a.h"
+#include "debug_gm20b.h"
+
+void gm20b_init_debug_ops(struct gpu_ops *gops)
+{
+	gops->debug.show_dump = gk20a_debug_show_dump;
+}

drivers/gpu/nvgpu/gm20b/debug_gm20b.h

@@ -0,0 +1,24 @@
+/*
+ * GM20B Debug functionality
+ *
+ * Copyright (C) 2015 NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _DEBUG_GM20B_H_
+#define _DEBUG_GM20B_H_
+
+struct gpu_ops;
+
+void gm20b_init_debug_ops(struct gpu_ops *gops);
+
+#endif

drivers/gpu/nvgpu/gm20b/hal_gm20b.c

@@ -1,7 +1,7 @@
 /*
  * GM20B Graphics
  *
- * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014-2015, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -30,6 +30,7 @@
 #include "mc_gm20b.h"
 #include <linux/tegra-fuse.h>
 #include "regops_gm20b.h"
+#include "debug_gm20b.h"
 
 #define FUSE_OPT_PRIV_SEC_DIS_0 0x264
 #define PRIV_SECURITY_DISABLE 0x01
@@ -128,6 +129,7 @@ int gm20b_init_hal(struct gk20a *g)
 	gm20b_init_pmu_ops(gops);
 	gm20b_init_clk_ops(gops);
 	gm20b_init_regops(gops);
+	gm20b_init_debug_ops(gops);
 	gops->name = "gm20b";
 
 	c->twod_class = FERMI_TWOD_A;

drivers/gpu/nvgpu/vgpu/debug_vgpu.c

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2015 NVIDIA Corporation.  All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include "vgpu/vgpu.h"
+
+static void vgpu_debug_show_dump(struct gk20a *g, struct gk20a_debug_output *o)
+{
+	/* debug dump not supported */
+}
+
+void vgpu_init_debug_ops(struct gpu_ops *gops)
+{
+	gops->debug.show_dump = vgpu_debug_show_dump;
+}

drivers/gpu/nvgpu/vgpu/vgpu.c

@@ -1,7 +1,7 @@
 /*
  * Virtualized GPU
  *
- * Copyright (c) 2014 NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014-2015 NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -247,6 +247,7 @@ static int vgpu_init_hal(struct gk20a *g)
 		vgpu_init_gr_ops(&g->ops);
 		vgpu_init_ltc_ops(&g->ops);
 		vgpu_init_mm_ops(&g->ops);
+		vgpu_init_debug_ops(&g->ops);
 		break;
 	default:
 		gk20a_err(&g->dev->dev, "no support for %x", ver);

drivers/gpu/nvgpu/vgpu/vgpu.h

@@ -1,7 +1,7 @@
 /*
  * Virtualized GPU Interfaces
  *
- * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014-2015, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -31,6 +31,7 @@ void vgpu_init_fifo_ops(struct gpu_ops *gops);
 void vgpu_init_gr_ops(struct gpu_ops *gops);
 void vgpu_init_ltc_ops(struct gpu_ops *gops);
 void vgpu_init_mm_ops(struct gpu_ops *gops);
+void vgpu_init_debug_ops(struct gpu_ops *gops);
 int vgpu_init_mm_support(struct gk20a *g);
 int vgpu_init_gr_support(struct gk20a *g);
 int vgpu_init_fifo_support(struct gk20a *g);
@@ -75,6 +76,9 @@ static inline void vgpu_init_ltc_ops(struct gpu_ops *gops)
 static inline void vgpu_init_mm_ops(struct gpu_ops *gops)
 {
 }
+static inline void vgpu_init_debug_ops(struct gpu_ops *gops)
+{
+}
 static inline int vgpu_init_mm_support(struct gk20a *g)
 {
 	return -ENOSYS;