LXR linux/drivers/net/fjes/fjes

   1/*
   2 *  FUJITSU Extended Socket Network Device driver
   3 *  Copyright (c) 2015-2016 FUJITSU LIMITED
   4 *
   5 * This program is free software; you can redistribute it and/or modify it
   6 * under the terms and conditions of the GNU General Public License,
   7 * version 2, as published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope it will be useful, but WITHOUT
  10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 * more details.
  13 *
  14 * You should have received a copy of the GNU General Public License along with
  15 * this program; if not, see <http://www.gnu.org/licenses/>.
  16 *
  17 * The full GNU General Public License is included in this distribution in
  18 * the file called "COPYING".
  19 *
  20 */
  21
  22/* debugfs support for fjes driver */
  23
  24#ifdef CONFIG_DEBUG_FS
  25
  26#include <linux/debugfs.h>
  27#include <linux/seq_file.h>
  28#include <linux/platform_device.h>
  29
  30#include "fjes.h"
  31
  32static struct dentry *fjes_debug_root;
  33
  34static const char * const ep_status_string[] = {
  35        "unshared",
  36        "shared",
  37        "waiting",
  38        "complete",
  39};
  40
  41static int fjes_dbg_status_show(struct seq_file *m, void *v)
  42{
  43        struct fjes_adapter *adapter = m->private;
  44        struct fjes_hw *hw = &adapter->hw;
  45        int max_epid = hw->max_epid;
  46        int my_epid = hw->my_epid;
  47        int epidx;
  48
  49        seq_puts(m, "EPID\tSTATUS           SAME_ZONE        CONNECTED\n");
  50        for (epidx = 0; epidx < max_epid; epidx++) {
  51                if (epidx == my_epid) {
  52                        seq_printf(m, "ep%d\t%-16c %-16c %-16c\n",
  53                                   epidx, '-', '-', '-');
  54                } else {
  55                        seq_printf(m, "ep%d\t%-16s %-16c %-16c\n",
  56                                   epidx,
  57                                   ep_status_string[fjes_hw_get_partner_ep_status(hw, epidx)],
  58                                   fjes_hw_epid_is_same_zone(hw, epidx) ? 'Y' : 'N',
  59                                   fjes_hw_epid_is_shared(hw->hw_info.share, epidx) ? 'Y' : 'N');
  60                }
  61        }
  62
  63        return 0;
  64}
  65
  66static int fjes_dbg_status_open(struct inode *inode, struct file *file)
  67{
  68        return single_open(file, fjes_dbg_status_show, inode->i_private);
  69}
  70
  71static const struct file_operations fjes_dbg_status_fops = {
  72        .owner          = THIS_MODULE,
  73        .open           = fjes_dbg_status_open,
  74        .read           = seq_read,
  75        .llseek         = seq_lseek,
  76        .release        = single_release,
  77};
  78
  79void fjes_dbg_adapter_init(struct fjes_adapter *adapter)
  80{
  81        const char *name = dev_name(&adapter->plat_dev->dev);
  82        struct dentry *pfile;
  83
  84        adapter->dbg_adapter = debugfs_create_dir(name, fjes_debug_root);
  85        if (!adapter->dbg_adapter) {
  86                dev_err(&adapter->plat_dev->dev,
  87                        "debugfs entry for %s failed\n", name);
  88                return;
  89        }
  90
  91        pfile = debugfs_create_file("status", 0444, adapter->dbg_adapter,
  92                                    adapter, &fjes_dbg_status_fops);
  93        if (!pfile)
  94                dev_err(&adapter->plat_dev->dev,
  95                        "debugfs status for %s failed\n", name);
  96}
  97
  98void fjes_dbg_adapter_exit(struct fjes_adapter *adapter)
  99{
 100        debugfs_remove_recursive(adapter->dbg_adapter);
 101        adapter->dbg_adapter = NULL;
 102}
 103
 104void fjes_dbg_init(void)
 105{
 106        fjes_debug_root = debugfs_create_dir(fjes_driver_name, NULL);
 107        if (!fjes_debug_root)
 108                pr_info("init of debugfs failed\n");
 109}
 110
 111void fjes_dbg_exit(void)
 112{
 113        debugfs_remove_recursive(fjes_debug_root);
 114        fjes_debug_root = NULL;
 115}
 116
 117#endif /* CONFIG_DEBUG_FS */
 118