1*4882a593Smuzhiyun /* Broadcom NetXtreme-C/E network driver.
2*4882a593Smuzhiyun *
3*4882a593Smuzhiyun * Copyright (c) 2017-2018 Broadcom Limited
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * This program is free software; you can redistribute it and/or modify
6*4882a593Smuzhiyun * it under the terms of the GNU General Public License as published by
7*4882a593Smuzhiyun * the Free Software Foundation.
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/debugfs.h>
11*4882a593Smuzhiyun #include <linux/module.h>
12*4882a593Smuzhiyun #include <linux/pci.h>
13*4882a593Smuzhiyun #include "bnxt_hsi.h"
14*4882a593Smuzhiyun #include <linux/dim.h>
15*4882a593Smuzhiyun #include "bnxt.h"
16*4882a593Smuzhiyun #include "bnxt_debugfs.h"
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun static struct dentry *bnxt_debug_mnt;
19*4882a593Smuzhiyun
debugfs_dim_read(struct file * filep,char __user * buffer,size_t count,loff_t * ppos)20*4882a593Smuzhiyun static ssize_t debugfs_dim_read(struct file *filep,
21*4882a593Smuzhiyun char __user *buffer,
22*4882a593Smuzhiyun size_t count, loff_t *ppos)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun struct dim *dim = filep->private_data;
25*4882a593Smuzhiyun int len;
26*4882a593Smuzhiyun char *buf;
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun if (*ppos)
29*4882a593Smuzhiyun return 0;
30*4882a593Smuzhiyun if (!dim)
31*4882a593Smuzhiyun return -ENODEV;
32*4882a593Smuzhiyun buf = kasprintf(GFP_KERNEL,
33*4882a593Smuzhiyun "state = %d\n" \
34*4882a593Smuzhiyun "profile_ix = %d\n" \
35*4882a593Smuzhiyun "mode = %d\n" \
36*4882a593Smuzhiyun "tune_state = %d\n" \
37*4882a593Smuzhiyun "steps_right = %d\n" \
38*4882a593Smuzhiyun "steps_left = %d\n" \
39*4882a593Smuzhiyun "tired = %d\n",
40*4882a593Smuzhiyun dim->state,
41*4882a593Smuzhiyun dim->profile_ix,
42*4882a593Smuzhiyun dim->mode,
43*4882a593Smuzhiyun dim->tune_state,
44*4882a593Smuzhiyun dim->steps_right,
45*4882a593Smuzhiyun dim->steps_left,
46*4882a593Smuzhiyun dim->tired);
47*4882a593Smuzhiyun if (!buf)
48*4882a593Smuzhiyun return -ENOMEM;
49*4882a593Smuzhiyun if (count < strlen(buf)) {
50*4882a593Smuzhiyun kfree(buf);
51*4882a593Smuzhiyun return -ENOSPC;
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
54*4882a593Smuzhiyun kfree(buf);
55*4882a593Smuzhiyun return len;
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun static const struct file_operations debugfs_dim_fops = {
59*4882a593Smuzhiyun .owner = THIS_MODULE,
60*4882a593Smuzhiyun .open = simple_open,
61*4882a593Smuzhiyun .read = debugfs_dim_read,
62*4882a593Smuzhiyun };
63*4882a593Smuzhiyun
debugfs_dim_ring_init(struct dim * dim,int ring_idx,struct dentry * dd)64*4882a593Smuzhiyun static void debugfs_dim_ring_init(struct dim *dim, int ring_idx,
65*4882a593Smuzhiyun struct dentry *dd)
66*4882a593Smuzhiyun {
67*4882a593Smuzhiyun static char qname[16];
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun snprintf(qname, 10, "%d", ring_idx);
70*4882a593Smuzhiyun debugfs_create_file(qname, 0600, dd, dim, &debugfs_dim_fops);
71*4882a593Smuzhiyun }
72*4882a593Smuzhiyun
bnxt_debug_dev_init(struct bnxt * bp)73*4882a593Smuzhiyun void bnxt_debug_dev_init(struct bnxt *bp)
74*4882a593Smuzhiyun {
75*4882a593Smuzhiyun const char *pname = pci_name(bp->pdev);
76*4882a593Smuzhiyun struct dentry *dir;
77*4882a593Smuzhiyun int i;
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun bp->debugfs_pdev = debugfs_create_dir(pname, bnxt_debug_mnt);
80*4882a593Smuzhiyun dir = debugfs_create_dir("dim", bp->debugfs_pdev);
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun /* create files for each rx ring */
83*4882a593Smuzhiyun for (i = 0; i < bp->cp_nr_rings; i++) {
84*4882a593Smuzhiyun struct bnxt_cp_ring_info *cpr = &bp->bnapi[i]->cp_ring;
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun if (cpr && bp->bnapi[i]->rx_ring)
87*4882a593Smuzhiyun debugfs_dim_ring_init(&cpr->dim, i, dir);
88*4882a593Smuzhiyun }
89*4882a593Smuzhiyun }
90*4882a593Smuzhiyun
bnxt_debug_dev_exit(struct bnxt * bp)91*4882a593Smuzhiyun void bnxt_debug_dev_exit(struct bnxt *bp)
92*4882a593Smuzhiyun {
93*4882a593Smuzhiyun if (bp) {
94*4882a593Smuzhiyun debugfs_remove_recursive(bp->debugfs_pdev);
95*4882a593Smuzhiyun bp->debugfs_pdev = NULL;
96*4882a593Smuzhiyun }
97*4882a593Smuzhiyun }
98*4882a593Smuzhiyun
bnxt_debug_init(void)99*4882a593Smuzhiyun void bnxt_debug_init(void)
100*4882a593Smuzhiyun {
101*4882a593Smuzhiyun bnxt_debug_mnt = debugfs_create_dir("bnxt_en", NULL);
102*4882a593Smuzhiyun }
103*4882a593Smuzhiyun
bnxt_debug_exit(void)104*4882a593Smuzhiyun void bnxt_debug_exit(void)
105*4882a593Smuzhiyun {
106*4882a593Smuzhiyun debugfs_remove_recursive(bnxt_debug_mnt);
107*4882a593Smuzhiyun }
108