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Commit c753119e authored by Taku Izumi's avatar Taku Izumi Committed by David S. Miller
Browse files

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: default avatarTaku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b6ba737d

drivers/net/fjes/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -27,4 +27,4 @@ 


obj-$(CONFIG_FUJITSU_ES) += fjes.o



fjes-objs := fjes_main.o fjes_hw.o fjes_ethtool.o fjes_trace.o
 
fjes-objs := fjes_main.o fjes_hw.o fjes_ethtool.o fjes_trace.o fjes_debugfs.o

drivers/net/fjes/fjes.h

+16 −0
Original line number Diff line number Diff line
@@ -66,6 +66,10 @@ struct fjes_adapter { 
	bool interrupt_watch_enable;



	struct fjes_hw hw;



#ifdef CONFIG_DEBUG_FS

	struct dentry *dbg_adapter;

#endif

};



extern char fjes_driver_name[];
@@ -74,4 +78,16 @@ extern const u32 fjes_support_mtu[]; 


void fjes_set_ethtool_ops(struct net_device *);



#ifdef CONFIG_DEBUG_FS

void fjes_dbg_adapter_init(struct fjes_adapter *adapter);

void fjes_dbg_adapter_exit(struct fjes_adapter *adapter);

void fjes_dbg_init(void);

void fjes_dbg_exit(void);

#else

static inline void fjes_dbg_adapter_init(struct fjes_adapter *adapter) {}

static inline void fjes_dbg_adapter_exit(struct fjes_adapter *adapter) {}

static inline void fjes_dbg_init(void) {}

static inline void fjes_dbg_exit(void) {}

#endif /* CONFIG_DEBUG_FS */



#endif /* FJES_H_ */

drivers/net/fjes/fjes_debugfs.c

0 → 100644
+117 −0
Original line number Diff line number Diff line 
/*

 *  FUJITSU Extended Socket Network Device driver

 *  Copyright (c) 2015-2016 FUJITSU LIMITED

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

 * more details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program; if not, see <http://www.gnu.org/licenses/>.

 *

 * The full GNU General Public License is included in this distribution in

 * the file called "COPYING".

 *

 */



/* debugfs support for fjes driver */



#ifdef CONFIG_DEBUG_FS



#include <linux/debugfs.h>

#include <linux/seq_file.h>

#include <linux/platform_device.h>



#include "fjes.h"



static struct dentry *fjes_debug_root;



static const char * const ep_status_string[] = {

	"unshared",

	"shared",

	"waiting",

	"complete",

};



static int fjes_dbg_status_show(struct seq_file *m, void *v)

{

	struct fjes_adapter *adapter = m->private;

	struct fjes_hw *hw = &adapter->hw;

	int max_epid = hw->max_epid;

	int my_epid = hw->my_epid;

	int epidx;



	seq_puts(m, "EPID\tSTATUS           SAME_ZONE        CONNECTED\n");

	for (epidx = 0; epidx < max_epid; epidx++) {

		if (epidx == my_epid) {

			seq_printf(m, "ep%d\t%-16c %-16c %-16c\n",

				   epidx, '-', '-', '-');

		} else {

			seq_printf(m, "ep%d\t%-16s %-16c %-16c\n",

				   epidx,

				   ep_status_string[fjes_hw_get_partner_ep_status(hw, epidx)],

				   fjes_hw_epid_is_same_zone(hw, epidx) ? 'Y' : 'N',

				   fjes_hw_epid_is_shared(hw->hw_info.share, epidx) ? 'Y' : 'N');

		}

	}



	return 0;

}



static int fjes_dbg_status_open(struct inode *inode, struct file *file)

{

	return single_open(file, fjes_dbg_status_show, inode->i_private);

}



static const struct file_operations fjes_dbg_status_fops = {

	.owner		= THIS_MODULE,

	.open		= fjes_dbg_status_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



void fjes_dbg_adapter_init(struct fjes_adapter *adapter)

{

	const char *name = dev_name(&adapter->plat_dev->dev);

	struct dentry *pfile;



	adapter->dbg_adapter = debugfs_create_dir(name, fjes_debug_root);

	if (!adapter->dbg_adapter) {

		dev_err(&adapter->plat_dev->dev,

			"debugfs entry for %s failed\n", name);

		return;

	}



	pfile = debugfs_create_file("status", 0444, adapter->dbg_adapter,

				    adapter, &fjes_dbg_status_fops);

	if (!pfile)

		dev_err(&adapter->plat_dev->dev,

			"debugfs status for %s failed\n", name);

}



void fjes_dbg_adapter_exit(struct fjes_adapter *adapter)

{

	debugfs_remove_recursive(adapter->dbg_adapter);

	adapter->dbg_adapter = NULL;

}



void fjes_dbg_init(void)

{

	fjes_debug_root = debugfs_create_dir(fjes_driver_name, NULL);

	if (!fjes_debug_root)

		pr_info("init of debugfs failed\n");

}



void fjes_dbg_exit(void)

{

	debugfs_remove_recursive(fjes_debug_root);

	fjes_debug_root = NULL;

}



#endif /* CONFIG_DEBUG_FS */

drivers/net/fjes/fjes_main.c

+11 −1
Original line number Diff line number Diff line
@@ -1257,6 +1257,8 @@ static int fjes_probe(struct platform_device *plat_dev) 


	netif_carrier_off(netdev);



	fjes_dbg_adapter_init(adapter);



	return 0;



err_hw_exit:
@@ -1274,6 +1276,8 @@ static int fjes_remove(struct platform_device *plat_dev) 
	struct fjes_adapter *adapter = netdev_priv(netdev);

	struct fjes_hw *hw = &adapter->hw;



	fjes_dbg_adapter_exit(adapter);



	cancel_delayed_work_sync(&adapter->interrupt_watch_task);

	cancel_work_sync(&adapter->unshare_watch_task);

	cancel_work_sync(&adapter->raise_intr_rxdata_task);
@@ -1478,9 +1482,13 @@ static int __init fjes_init_module(void) 
	pr_info("%s - version %s - %s\n",

		fjes_driver_string, fjes_driver_version, fjes_copyright);



	fjes_dbg_init();



	result = platform_driver_register(&fjes_driver);

	if (result < 0)

	if (result < 0) {

		fjes_dbg_exit();

		return result;

	}



	result = acpi_bus_register_driver(&fjes_acpi_driver);

	if (result < 0)
@@ -1490,6 +1498,7 @@ static int __init fjes_init_module(void) 


fail_acpi_driver:

	platform_driver_unregister(&fjes_driver);

	fjes_dbg_exit();

	return result;

}
@@ -1500,6 +1509,7 @@ static void __exit fjes_exit_module(void) 
{

	acpi_bus_unregister_driver(&fjes_acpi_driver);

	platform_driver_unregister(&fjes_driver);

	fjes_dbg_exit();

}



module_exit(fjes_exit_module);