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