// SPDX-License-Identifier: GPL-2.0-only
/*
 *  FUJITSU Extended Socket Network Device driver
 *  Copyright (c) 2015-2016 FUJITSU LIMITED
 */

/* 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;
}
DEFINE_SHOW_ATTRIBUTE(fjes_dbg_status);

void fjes_dbg_adapter_init(struct fjes_adapter *adapter)
{
        const char *name = dev_name(&adapter->plat_dev->dev);

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

        debugfs_create_file("status", 0444, adapter->dbg_adapter, adapter,
                            &fjes_dbg_status_fops);
}

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);
}

void fjes_dbg_exit(void)
{
        debugfs_remove_recursive(fjes_debug_root);
        fjes_debug_root = NULL;
}

#endif /* CONFIG_DEBUG_FS */