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 struct dentry *pfile; 56 57 adapter->dbg_adapter = debugfs_create_dir(name, fjes_debug_root); 58 if (!adapter->dbg_adapter) { 59 dev_err(&adapter->plat_dev->dev, 60 "debugfs entry for %s failed\n", name); 61 return; 62 } 63 64 pfile = debugfs_create_file("status", 0444, adapter->dbg_adapter, 65 adapter, &fjes_dbg_status_fops); 66 if (!pfile) 67 dev_err(&adapter->plat_dev->dev, 68 "debugfs status for %s failed\n", name); 69 } 70 71 void fjes_dbg_adapter_exit(struct fjes_adapter *adapter) 72 { 73 debugfs_remove_recursive(adapter->dbg_adapter); 74 adapter->dbg_adapter = NULL; 75 } 76 77 void fjes_dbg_init(void) 78 { 79 fjes_debug_root = debugfs_create_dir(fjes_driver_name, NULL); 80 if (!fjes_debug_root) 81 pr_info("init of debugfs failed\n"); 82 } 83 84 void fjes_dbg_exit(void) 85 { 86 debugfs_remove_recursive(fjes_debug_root); 87 fjes_debug_root = NULL; 88 } 89 90 #endif /* CONFIG_DEBUG_FS */ 91