drivers/net/fjes/fjes_debugfs.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  FUJITSU Extended Socket Network Device driver
   4  *  Copyright (c) 2015-2016 FUJITSU LIMITED
   5  */
   6
   7 /* debugfs support for fjes driver */
   8
   9 #ifdef CONFIG_DEBUG_FS
  10
  11 #include <linux/debugfs.h>
  12 #include <linux/seq_file.h>
  13 #include <linux/platform_device.h>
  14
  15 #include "fjes.h"
  16
  17 static struct dentry *fjes_debug_root;
  18
  19 static const char * const ep_status_string[] = {
  20         "unshared",
  21         "shared",
  22         "waiting",
  23         "complete",
  24 };
  25
  26 static int fjes_dbg_status_show(struct seq_file *m, void *v)
  27 {
  28         struct fjes_adapter *adapter = m->private;
  29         struct fjes_hw *hw = &adapter->hw;
  30         int max_epid = hw->max_epid;
  31         int my_epid = hw->my_epid;
  32         int epidx;
  33
  34         seq_puts(m, "EPID\tSTATUS           SAME_ZONE        CONNECTED\n");
  35         for (epidx = 0; epidx < max_epid; epidx++) {
  36                 if (epidx == my_epid) {
  37                         seq_printf(m, "ep%d\t%-16c %-16c %-16c\n",
  38                                    epidx, '-', '-', '-');
  39                 } else {
  40                         seq_printf(m, "ep%d\t%-16s %-16c %-16c\n",
  41                                    epidx,
  42                                    ep_status_string[fjes_hw_get_partner_ep_status(hw, epidx)],
  43                                    fjes_hw_epid_is_same_zone(hw, epidx) ? 'Y' : 'N',
  44                                    fjes_hw_epid_is_shared(hw->hw_info.share, epidx) ? 'Y' : 'N');
  45                 }
  46         }
  47
  48         return 0;
  49 }
  50 DEFINE_SHOW_ATTRIBUTE(fjes_dbg_status);
  51
  52 void fjes_dbg_adapter_init(struct fjes_adapter *adapter)
  53 {
  54         const char *name = dev_name(&adapter->plat_dev->dev);
  55
  56         adapter->dbg_adapter = debugfs_create_dir(name, fjes_debug_root);
  57
  58         debugfs_create_file("status", 0444, adapter->dbg_adapter, adapter,
  59                             &fjes_dbg_status_fops);
  60 }
  61
  62 void fjes_dbg_adapter_exit(struct fjes_adapter *adapter)
  63 {
  64         debugfs_remove_recursive(adapter->dbg_adapter);
  65         adapter->dbg_adapter = NULL;
  66 }
  67
  68 void fjes_dbg_init(void)
  69 {
  70         fjes_debug_root = debugfs_create_dir(fjes_driver_name, NULL);
  71 }
  72
  73 void fjes_dbg_exit(void)
  74 {
  75         debugfs_remove_recursive(fjes_debug_root);
  76         fjes_debug_root = NULL;
  77 }
  78
  79 #endif /* CONFIG_DEBUG_FS */