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1/* Broadcom NetXtreme-C/E network driver.2 *3 * Copyright (c) 2017-2018 Broadcom Limited4 *5 * This program is free software; you can redistribute it and/or modify6 * it under the terms of the GNU General Public License as published by7 * the Free Software Foundation.8 */9 10#include <linux/debugfs.h>11#include <linux/module.h>12#include <linux/pci.h>13#include "bnxt_hsi.h"14#include <linux/dim.h>15#include "bnxt.h"16#include "bnxt_debugfs.h"17 18static struct dentry *bnxt_debug_mnt;19 20static ssize_t debugfs_dim_read(struct file *filep,21 char __user *buffer,22 size_t count, loff_t *ppos)23{24 struct dim *dim = filep->private_data;25 int len;26 char *buf;27 28 if (*ppos)29 return 0;30 if (!dim)31 return -ENODEV;32 buf = kasprintf(GFP_KERNEL,33 "state = %d\n" \34 "profile_ix = %d\n" \35 "mode = %d\n" \36 "tune_state = %d\n" \37 "steps_right = %d\n" \38 "steps_left = %d\n" \39 "tired = %d\n",40 dim->state,41 dim->profile_ix,42 dim->mode,43 dim->tune_state,44 dim->steps_right,45 dim->steps_left,46 dim->tired);47 if (!buf)48 return -ENOMEM;49 if (count < strlen(buf)) {50 kfree(buf);51 return -ENOSPC;52 }53 len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));54 kfree(buf);55 return len;56}57 58static const struct file_operations debugfs_dim_fops = {59 .owner = THIS_MODULE,60 .open = simple_open,61 .read = debugfs_dim_read,62};63 64static void debugfs_dim_ring_init(struct dim *dim, int ring_idx,65 struct dentry *dd)66{67 static char qname[12];68 69 snprintf(qname, sizeof(qname), "%d", ring_idx);70 debugfs_create_file(qname, 0600, dd, dim, &debugfs_dim_fops);71}72 73void bnxt_debug_dev_init(struct bnxt *bp)74{75 const char *pname = pci_name(bp->pdev);76 struct dentry *dir;77 int i;78 79 bp->debugfs_pdev = debugfs_create_dir(pname, bnxt_debug_mnt);80 dir = debugfs_create_dir("dim", bp->debugfs_pdev);81 82 /* create files for each rx ring */83 for (i = 0; i < bp->cp_nr_rings; i++) {84 struct bnxt_cp_ring_info *cpr = &bp->bnapi[i]->cp_ring;85 86 if (cpr && bp->bnapi[i]->rx_ring)87 debugfs_dim_ring_init(&cpr->dim, i, dir);88 }89}90 91void bnxt_debug_dev_exit(struct bnxt *bp)92{93 if (bp) {94 debugfs_remove_recursive(bp->debugfs_pdev);95 bp->debugfs_pdev = NULL;96 }97}98 99void bnxt_debug_init(void)100{101 bnxt_debug_mnt = debugfs_create_dir("bnxt_en", NULL);102}103 104void bnxt_debug_exit(void)105{106 debugfs_remove_recursive(bnxt_debug_mnt);107}108