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DCE-KMD: Add support for logging infra

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- Allocate DMA mapped buffer from DCE-KMD and pass it to DCE FW through
  admin-cmd calls.
- Add debugfs node to retrieve buffer data and print through seq file.
- Add support to clear log buffer

JIRA TDS-15963

Change-Id: Ied4ffe1df14c8db61cfe15e6442f55e8306530b8
Signed-off-by: jaiyasha <jaiyasha@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3117241
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Mahesh Kumar <mahkumar@nvidia.com>
Tested-by: Mahesh Kumar <mahkumar@nvidia.com>
Reviewed-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com>
This commit is contained in:
jaiyasha
2024-04-16 11:02:26 +00:00
committed by Jon Hunter
parent d9679931aa
commit c89da8defd
10 changed files with 498 additions and 1 deletions
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33
drivers/platform/tegra/dce/dce-debug.c
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@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* SPDX-FileCopyrightText: Copyright (c) 2019-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-FileCopyrightText: Copyright (c) 2019-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
*/
#include <linux/errno.h>
@@ -12,6 +12,7 @@
#include <dce-os-utils.h>
#include <dce-linux-device.h>
#include <dce-debug-perf.h>
#include <dce-debug-logging.h>
#include <interface/dce-interface.h>
#include <interface/dce-core-interface-errors.h>
@@ -162,6 +163,21 @@ static const struct file_operations load_firmware_fops = {
.write = dbg_dce_load_fw_write,
};
static const struct file_operations dbg_dce_log_help_fops = {
.open = dbg_dce_log_help_fops_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static const struct file_operations dbg_dce_log_fops = {
.open = dbg_dce_log_fops_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = dbg_dce_log_fops_write,
};
static ssize_t dbg_dce_config_ast_read(struct file *file,
char __user *user_buf, size_t count, loff_t *ppos)
{
@@ -764,6 +780,7 @@ void dce_init_debug(struct tegra_dce *d)
struct dce_linux_device *d_dev = dce_linux_device_from_dce(d);
struct dentry *debugfs_dir = NULL;
struct dentry *perf_debugfs_dir = NULL;
struct dentry *dce_logging_dir = NULL;
int ret = 0;
ret = dce_admin_channel_client_buffers_init(d, DCE_ADMIN_CH_CL_DBG_BUFF);
@@ -781,6 +798,20 @@ void dce_init_debug(struct tegra_dce *d)
if (!retval)
goto err_handle;
dce_logging_dir = debugfs_create_dir("dce_logs", d_dev->debugfs);
if (!dce_logging_dir)
goto err_handle;
retval = debugfs_create_file("help", 0444,
dce_logging_dir, d, &dbg_dce_log_help_fops);
if (!retval)
goto err_handle;
retval = debugfs_create_file("logs", 0644,
dce_logging_dir, d, &dbg_dce_log_fops);
if (!retval)
goto err_handle;
retval = debugfs_create_file("config_ast", 0444,
d_dev->debugfs, d, &config_ast_fops);
if (!retval)