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

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
...@@ -27,4 +27,4 @@ ...@@ -27,4 +27,4 @@
obj-$(CONFIG_FUJITSU_ES) += fjes.o obj-$(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
...@@ -66,6 +66,10 @@ struct fjes_adapter { ...@@ -66,6 +66,10 @@ struct fjes_adapter {
bool interrupt_watch_enable; bool interrupt_watch_enable;
struct fjes_hw hw; struct fjes_hw hw;
#ifdef CONFIG_DEBUG_FS
struct dentry *dbg_adapter;
#endif
}; };
extern char fjes_driver_name[]; extern char fjes_driver_name[];
...@@ -74,4 +78,16 @@ extern const u32 fjes_support_mtu[]; ...@@ -74,4 +78,16 @@ extern const u32 fjes_support_mtu[];
void fjes_set_ethtool_ops(struct net_device *); 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_ */ #endif /* FJES_H_ */
/*
* 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 */
...@@ -1257,6 +1257,8 @@ static int fjes_probe(struct platform_device *plat_dev) ...@@ -1257,6 +1257,8 @@ static int fjes_probe(struct platform_device *plat_dev)
netif_carrier_off(netdev); netif_carrier_off(netdev);
fjes_dbg_adapter_init(adapter);
return 0; return 0;
err_hw_exit: err_hw_exit:
...@@ -1274,6 +1276,8 @@ static int fjes_remove(struct platform_device *plat_dev) ...@@ -1274,6 +1276,8 @@ static int fjes_remove(struct platform_device *plat_dev)
struct fjes_adapter *adapter = netdev_priv(netdev); struct fjes_adapter *adapter = netdev_priv(netdev);
struct fjes_hw *hw = &adapter->hw; struct fjes_hw *hw = &adapter->hw;
fjes_dbg_adapter_exit(adapter);
cancel_delayed_work_sync(&adapter->interrupt_watch_task); cancel_delayed_work_sync(&adapter->interrupt_watch_task);
cancel_work_sync(&adapter->unshare_watch_task); cancel_work_sync(&adapter->unshare_watch_task);
cancel_work_sync(&adapter->raise_intr_rxdata_task); cancel_work_sync(&adapter->raise_intr_rxdata_task);
...@@ -1478,9 +1482,13 @@ static int __init fjes_init_module(void) ...@@ -1478,9 +1482,13 @@ static int __init fjes_init_module(void)
pr_info("%s - version %s - %s\n", pr_info("%s - version %s - %s\n",
fjes_driver_string, fjes_driver_version, fjes_copyright); fjes_driver_string, fjes_driver_version, fjes_copyright);
fjes_dbg_init();
result = platform_driver_register(&fjes_driver); result = platform_driver_register(&fjes_driver);
if (result < 0) if (result < 0) {
fjes_dbg_exit();
return result; return result;
}
result = acpi_bus_register_driver(&fjes_acpi_driver); result = acpi_bus_register_driver(&fjes_acpi_driver);
if (result < 0) if (result < 0)
...@@ -1490,6 +1498,7 @@ static int __init fjes_init_module(void) ...@@ -1490,6 +1498,7 @@ static int __init fjes_init_module(void)
fail_acpi_driver: fail_acpi_driver:
platform_driver_unregister(&fjes_driver); platform_driver_unregister(&fjes_driver);
fjes_dbg_exit();
return result; return result;
} }
...@@ -1500,6 +1509,7 @@ static void __exit fjes_exit_module(void) ...@@ -1500,6 +1509,7 @@ static void __exit fjes_exit_module(void)
{ {
acpi_bus_unregister_driver(&fjes_acpi_driver); acpi_bus_unregister_driver(&fjes_acpi_driver);
platform_driver_unregister(&fjes_driver); platform_driver_unregister(&fjes_driver);
fjes_dbg_exit();
} }
module_exit(fjes_exit_module); module_exit(fjes_exit_module);
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