293ad28116
For some reason a number of files included the "All rights reserved" statement. Good old copy-paste made sure this mistake proliferated. Remove the "All rights reserved" in all Intel-copyright to align with internal guidance. Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Link: https://lore.kernel.org/r/20240503140359.259762-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
96 lines
2.4 KiB
C
96 lines
2.4 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
|
|
//
|
|
// This file is provided under a dual BSD/GPLv2 license. When using or
|
|
// redistributing this file, you may do so under either license.
|
|
//
|
|
// Copyright(c) 2018-2023 Intel Corporation
|
|
//
|
|
|
|
#include <linux/debugfs.h>
|
|
#include <linux/io.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <sound/sof/debug.h>
|
|
#include <sound/sof/ipc4/header.h>
|
|
#include "sof-priv.h"
|
|
#include "ops.h"
|
|
#include "ipc4-telemetry.h"
|
|
#include "ipc4-priv.h"
|
|
|
|
static void __iomem *sof_ipc4_query_exception_address(struct snd_sof_dev *sdev)
|
|
{
|
|
u32 type = SOF_IPC4_DEBUG_SLOT_TELEMETRY;
|
|
size_t telemetry_slot_offset;
|
|
u32 offset;
|
|
|
|
telemetry_slot_offset = sof_ipc4_find_debug_slot_offset_by_type(sdev, type);
|
|
if (!telemetry_slot_offset)
|
|
return NULL;
|
|
|
|
/* skip the first separator magic number */
|
|
offset = telemetry_slot_offset + sizeof(u32);
|
|
|
|
return sdev->bar[sdev->mailbox_bar] + offset;
|
|
}
|
|
|
|
static ssize_t sof_telemetry_entry_read(struct file *file, char __user *buffer,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct snd_sof_dfsentry *dfse = file->private_data;
|
|
struct snd_sof_dev *sdev = dfse->sdev;
|
|
void __iomem *io_addr;
|
|
loff_t pos = *ppos;
|
|
size_t size_ret;
|
|
u8 *buf;
|
|
|
|
if (pos < 0)
|
|
return -EINVAL;
|
|
/* skip the first separator magic number */
|
|
if (pos >= SOF_IPC4_DEBUG_SLOT_SIZE - 4 || !count)
|
|
return 0;
|
|
if (count > SOF_IPC4_DEBUG_SLOT_SIZE - 4 - pos)
|
|
count = SOF_IPC4_DEBUG_SLOT_SIZE - 4 - pos;
|
|
|
|
io_addr = sof_ipc4_query_exception_address(sdev);
|
|
if (!io_addr)
|
|
return -EFAULT;
|
|
|
|
buf = kzalloc(SOF_IPC4_DEBUG_SLOT_SIZE - 4, GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
memcpy_fromio(buf, io_addr, SOF_IPC4_DEBUG_SLOT_SIZE - 4);
|
|
size_ret = copy_to_user(buffer, buf + pos, count);
|
|
if (size_ret) {
|
|
kfree(buf);
|
|
return -EFAULT;
|
|
}
|
|
|
|
*ppos = pos + count;
|
|
kfree(buf);
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations sof_telemetry_fops = {
|
|
.open = simple_open,
|
|
.read = sof_telemetry_entry_read,
|
|
};
|
|
|
|
void sof_ipc4_create_exception_debugfs_node(struct snd_sof_dev *sdev)
|
|
{
|
|
struct snd_sof_dfsentry *dfse;
|
|
|
|
dfse = devm_kzalloc(sdev->dev, sizeof(*dfse), GFP_KERNEL);
|
|
if (!dfse)
|
|
return;
|
|
|
|
dfse->type = SOF_DFSENTRY_TYPE_IOMEM;
|
|
dfse->size = SOF_IPC4_DEBUG_SLOT_SIZE - 4;
|
|
dfse->access_type = SOF_DEBUGFS_ACCESS_ALWAYS;
|
|
dfse->sdev = sdev;
|
|
|
|
list_add(&dfse->list, &sdev->dfsentry_list);
|
|
|
|
debugfs_create_file("exception", 0444, sdev->debugfs_root, dfse, &sof_telemetry_fops);
|
|
}
|