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>
diff --git a/drivers/net/fjes/fjes_debugfs.c b/drivers/net/fjes/fjes_debugfs.c
new file mode 100644
index 0000000..30052eb
--- /dev/null
+++ b/drivers/net/fjes/fjes_debugfs.c
@@ -0,0 +1,117 @@
+/*
+ * 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 */