pfe_debugfs.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2015-2016 Freescale Semiconductor, Inc.
* Copyright 2017 NXP
*/
#include <linux/module.h>
#include <linux/debugfs.h>
#include <linux/platform_device.h>
#include "pfe_mod.h"
static int dmem_show(struct seq_file *s, void *unused)
{
u32 dmem_addr, val;
int id = (long int)s->private;
int i;
for (dmem_addr = 0; dmem_addr < CLASS_DMEM_SIZE; dmem_addr += 8 * 4) {
seq_printf(s, "%04x:", dmem_addr);
for (i = 0; i < 8; i++) {
val = pe_dmem_read(id, dmem_addr + i * 4, 4);
seq_printf(s, " %02x %02x %02x %02x", val & 0xff,
(val >> 8) & 0xff, (val >> 16) & 0xff,
(val >> 24) & 0xff);
}
seq_puts(s, "\n");
}
return 0;
}
static int dmem_open(struct inode *inode, struct file *file)
{
return single_open(file, dmem_show, inode->i_private);
}
static const struct file_operations dmem_fops = {
.open = dmem_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
int pfe_debugfs_init(struct pfe *pfe)
{
struct dentry *d;
pr_info("%s\n", __func__);
pfe->dentry = debugfs_create_dir("pfe", NULL);
if (IS_ERR_OR_NULL(pfe->dentry))
goto err_dir;
d = debugfs_create_file("pe0_dmem", 0444, pfe->dentry, (void *)0,
&dmem_fops);
if (IS_ERR_OR_NULL(d))
goto err_pe;
d = debugfs_create_file("pe1_dmem", 0444, pfe->dentry, (void *)1,
&dmem_fops);
if (IS_ERR_OR_NULL(d))
goto err_pe;
d = debugfs_create_file("pe2_dmem", 0444, pfe->dentry, (void *)2,
&dmem_fops);
if (IS_ERR_OR_NULL(d))
goto err_pe;
d = debugfs_create_file("pe3_dmem", 0444, pfe->dentry, (void *)3,
&dmem_fops);
if (IS_ERR_OR_NULL(d))
goto err_pe;
d = debugfs_create_file("pe4_dmem", 0444, pfe->dentry, (void *)4,
&dmem_fops);
if (IS_ERR_OR_NULL(d))
goto err_pe;
d = debugfs_create_file("pe5_dmem", 0444, pfe->dentry, (void *)5,
&dmem_fops);
if (IS_ERR_OR_NULL(d))
goto err_pe;
return 0;
err_pe:
debugfs_remove_recursive(pfe->dentry);
err_dir:
return -1;
}
void pfe_debugfs_exit(struct pfe *pfe)
{
debugfs_remove_recursive(pfe->dentry);
}