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/* Broadcom NetXtreme-C/E network driver.
*
* Copyright (c) 2017-2018 Broadcom Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*/
#include <linux/debugfs.h>
#include <linux/module.h>
#include <linux/pci.h>
#include "bnxt_hsi.h"
#include <linux/net_dim.h>
#include "bnxt.h"
#include "bnxt_debugfs.h"
static struct dentry *bnxt_debug_mnt;
static ssize_t debugfs_dim_read(struct file *filep,
char __user *buffer,
size_t count, loff_t *ppos)
{
struct net_dim *dim = filep->private_data;
int len;
char *buf;
if (*ppos)
return 0;
if (!dim)
return -ENODEV;
buf = kasprintf(GFP_KERNEL,
"state = %d\n" \
"profile_ix = %d\n" \
"mode = %d\n" \
"tune_state = %d\n" \
"steps_right = %d\n" \
"steps_left = %d\n" \
"tired = %d\n",
dim->state,
dim->profile_ix,
dim->mode,
dim->tune_state,
dim->steps_right,
dim->steps_left,
dim->tired);
if (!buf)
return -ENOMEM;
if (count < strlen(buf)) {
kfree(buf);
return -ENOSPC;
}
len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
kfree(buf);
return len;
}
static const struct file_operations debugfs_dim_fops = {
.owner = THIS_MODULE,
.open = simple_open,
.read = debugfs_dim_read,
};
static struct dentry *debugfs_dim_ring_init(struct net_dim *dim, int ring_idx,
struct dentry *dd)
{
static char qname[16];
snprintf(qname, 10, "%d", ring_idx);
return debugfs_create_file(qname, 0600, dd,
dim, &debugfs_dim_fops);
}
void bnxt_debug_dev_init(struct bnxt *bp)
{
const char *pname = pci_name(bp->pdev);
struct dentry *pdevf;
int i;
bp->debugfs_pdev = debugfs_create_dir(pname, bnxt_debug_mnt);
if (bp->debugfs_pdev) {
pdevf = debugfs_create_dir("dim", bp->debugfs_pdev);
if (!pdevf) {
pr_err("failed to create debugfs entry %s/dim\n",
pname);
return;
}
bp->debugfs_dim = pdevf;
/* create files for each rx ring */
for (i = 0; i < bp->cp_nr_rings; i++) {
struct bnxt_cp_ring_info *cpr = &bp->bnapi[i]->cp_ring;
if (cpr && bp->bnapi[i]->rx_ring) {
pdevf = debugfs_dim_ring_init(&cpr->dim, i,
bp->debugfs_dim);
if (!pdevf)
pr_err("failed to create debugfs entry %s/dim/%d\n",
pname, i);
}
}
} else {
pr_err("failed to create debugfs entry %s\n", pname);
}
}
void bnxt_debug_dev_exit(struct bnxt *bp)
{
if (bp) {
debugfs_remove_recursive(bp->debugfs_pdev);
bp->debugfs_pdev = NULL;
}
}
void bnxt_debug_init(void)
{
bnxt_debug_mnt = debugfs_create_dir("bnxt_en", NULL);
if (!bnxt_debug_mnt)
pr_err("failed to init bnxt_en debugfs\n");
}
void bnxt_debug_exit(void)
{
debugfs_remove_recursive(bnxt_debug_mnt);
}
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