fjes: Add debugfs entry for EP status information in fjes driver
This patch adds debugfs entry to show EP status information. You can get each EP's status information like the following: # cat /sys/kernel/debug/fjes/fjes.0/status EPID STATUS SAME_ZONE CONNECTED ep0 shared Y Y ep1 - - - ep2 unshared N N ep3 unshared N N ep4 unshared N N ep5 unshared N N ep6 unshared N N ep7 unshared N N Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Taku Izumi
David S. Miller
parent
b6ba737d0b
commit
c753119e6d
@ -27,4 +27,4 @@
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obj-$(CONFIG_FUJITSU_ES) += fjes.o
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fjes-objs := fjes_main.o fjes_hw.o fjes_ethtool.o fjes_trace.o
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fjes-objs := fjes_main.o fjes_hw.o fjes_ethtool.o fjes_trace.o fjes_debugfs.o
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@ -66,6 +66,10 @@ struct fjes_adapter {
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bool interrupt_watch_enable;
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struct fjes_hw hw;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *dbg_adapter;
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#endif
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};
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extern char fjes_driver_name[];
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@ -74,4 +78,16 @@ extern const u32 fjes_support_mtu[];
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void fjes_set_ethtool_ops(struct net_device *);
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#ifdef CONFIG_DEBUG_FS
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void fjes_dbg_adapter_init(struct fjes_adapter *adapter);
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void fjes_dbg_adapter_exit(struct fjes_adapter *adapter);
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void fjes_dbg_init(void);
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void fjes_dbg_exit(void);
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#else
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static inline void fjes_dbg_adapter_init(struct fjes_adapter *adapter) {}
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static inline void fjes_dbg_adapter_exit(struct fjes_adapter *adapter) {}
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static inline void fjes_dbg_init(void) {}
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static inline void fjes_dbg_exit(void) {}
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#endif /* CONFIG_DEBUG_FS */
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#endif /* FJES_H_ */
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117
drivers/net/fjes/fjes_debugfs.c
Normal file
117
drivers/net/fjes/fjes_debugfs.c
Normal file
@ -0,0 +1,117 @@
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/*
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* FUJITSU Extended Socket Network Device driver
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* Copyright (c) 2015-2016 FUJITSU LIMITED
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, see <http://www.gnu.org/licenses/>.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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*/
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/* debugfs support for fjes driver */
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#ifdef CONFIG_DEBUG_FS
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/platform_device.h>
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#include "fjes.h"
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static struct dentry *fjes_debug_root;
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static const char * const ep_status_string[] = {
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"unshared",
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"shared",
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"waiting",
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"complete",
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};
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static int fjes_dbg_status_show(struct seq_file *m, void *v)
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{
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struct fjes_adapter *adapter = m->private;
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struct fjes_hw *hw = &adapter->hw;
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int max_epid = hw->max_epid;
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int my_epid = hw->my_epid;
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int epidx;
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seq_puts(m, "EPID\tSTATUS SAME_ZONE CONNECTED\n");
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for (epidx = 0; epidx < max_epid; epidx++) {
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if (epidx == my_epid) {
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seq_printf(m, "ep%d\t%-16c %-16c %-16c\n",
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epidx, '-', '-', '-');
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} else {
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seq_printf(m, "ep%d\t%-16s %-16c %-16c\n",
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epidx,
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ep_status_string[fjes_hw_get_partner_ep_status(hw, epidx)],
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fjes_hw_epid_is_same_zone(hw, epidx) ? 'Y' : 'N',
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fjes_hw_epid_is_shared(hw->hw_info.share, epidx) ? 'Y' : 'N');
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}
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}
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return 0;
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}
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static int fjes_dbg_status_open(struct inode *inode, struct file *file)
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{
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return single_open(file, fjes_dbg_status_show, inode->i_private);
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}
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static const struct file_operations fjes_dbg_status_fops = {
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.owner = THIS_MODULE,
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.open = fjes_dbg_status_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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void fjes_dbg_adapter_init(struct fjes_adapter *adapter)
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{
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const char *name = dev_name(&adapter->plat_dev->dev);
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struct dentry *pfile;
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adapter->dbg_adapter = debugfs_create_dir(name, fjes_debug_root);
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if (!adapter->dbg_adapter) {
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dev_err(&adapter->plat_dev->dev,
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"debugfs entry for %s failed\n", name);
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return;
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}
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pfile = debugfs_create_file("status", 0444, adapter->dbg_adapter,
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adapter, &fjes_dbg_status_fops);
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if (!pfile)
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dev_err(&adapter->plat_dev->dev,
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"debugfs status for %s failed\n", name);
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}
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void fjes_dbg_adapter_exit(struct fjes_adapter *adapter)
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{
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debugfs_remove_recursive(adapter->dbg_adapter);
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adapter->dbg_adapter = NULL;
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}
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void fjes_dbg_init(void)
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{
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fjes_debug_root = debugfs_create_dir(fjes_driver_name, NULL);
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if (!fjes_debug_root)
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pr_info("init of debugfs failed\n");
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}
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void fjes_dbg_exit(void)
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{
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debugfs_remove_recursive(fjes_debug_root);
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fjes_debug_root = NULL;
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}
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#endif /* CONFIG_DEBUG_FS */
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@ -1257,6 +1257,8 @@ static int fjes_probe(struct platform_device *plat_dev)
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netif_carrier_off(netdev);
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fjes_dbg_adapter_init(adapter);
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return 0;
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err_hw_exit:
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@ -1274,6 +1276,8 @@ static int fjes_remove(struct platform_device *plat_dev)
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struct fjes_adapter *adapter = netdev_priv(netdev);
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struct fjes_hw *hw = &adapter->hw;
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fjes_dbg_adapter_exit(adapter);
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cancel_delayed_work_sync(&adapter->interrupt_watch_task);
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cancel_work_sync(&adapter->unshare_watch_task);
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cancel_work_sync(&adapter->raise_intr_rxdata_task);
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@ -1478,9 +1482,13 @@ static int __init fjes_init_module(void)
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pr_info("%s - version %s - %s\n",
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fjes_driver_string, fjes_driver_version, fjes_copyright);
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fjes_dbg_init();
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result = platform_driver_register(&fjes_driver);
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if (result < 0)
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if (result < 0) {
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fjes_dbg_exit();
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return result;
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}
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result = acpi_bus_register_driver(&fjes_acpi_driver);
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if (result < 0)
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@ -1490,6 +1498,7 @@ static int __init fjes_init_module(void)
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fail_acpi_driver:
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platform_driver_unregister(&fjes_driver);
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fjes_dbg_exit();
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return result;
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}
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@ -1500,6 +1509,7 @@ static void __exit fjes_exit_module(void)
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{
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acpi_bus_unregister_driver(&fjes_acpi_driver);
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platform_driver_unregister(&fjes_driver);
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fjes_dbg_exit();
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}
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module_exit(fjes_exit_module);
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