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gpu: host1x: Add debug support

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Add support for host1x debugging. Adds debugfs entries, and dumps
channel state to UART in case of stuck job.

Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
This commit is contained in:
Terje Bergstrom
2013-03-22 16:34:04 +02:00
committed by Thierry Reding
parent 6579324a41
commit 6236451d83
15 changed files with 807 additions and 0 deletions
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51
drivers/gpu/host1x/debug.h Normal file
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/*
* Tegra host1x Debug
*
* Copyright (c) 2011-2013 NVIDIA Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __HOST1X_DEBUG_H
#define __HOST1X_DEBUG_H
#include <linux/debugfs.h>
#include <linux/seq_file.h>
struct host1x;
struct output {
void (*fn)(void *ctx, const char *str, size_t len);
void *ctx;
char buf[256];
};
static inline void write_to_seqfile(void *ctx, const char *str, size_t len)
{
seq_write((struct seq_file *)ctx, str, len);
}
static inline void write_to_printk(void *ctx, const char *str, size_t len)
{
pr_info("%s", str);
}
void __printf(2, 3) host1x_debug_output(struct output *o, const char *fmt, ...);
extern unsigned int host1x_debug_trace_cmdbuf;
void host1x_debug_init(struct host1x *host1x);
void host1x_debug_deinit(struct host1x *host1x);
void host1x_debug_dump(struct host1x *host1x);
void host1x_debug_dump_syncpts(struct host1x *host1x);
#endif