cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fjes_debugfs.c (1863B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 *  FUJITSU Extended Socket Network Device driver
      4 *  Copyright (c) 2015-2016 FUJITSU LIMITED
      5 */
      6
      7/* debugfs support for fjes driver */
      8
      9#ifdef CONFIG_DEBUG_FS
     10
     11#include <linux/debugfs.h>
     12#include <linux/seq_file.h>
     13#include <linux/platform_device.h>
     14
     15#include "fjes.h"
     16
     17static struct dentry *fjes_debug_root;
     18
     19static const char * const ep_status_string[] = {
     20	"unshared",
     21	"shared",
     22	"waiting",
     23	"complete",
     24};
     25
     26static int fjes_dbg_status_show(struct seq_file *m, void *v)
     27{
     28	struct fjes_adapter *adapter = m->private;
     29	struct fjes_hw *hw = &adapter->hw;
     30	int max_epid = hw->max_epid;
     31	int my_epid = hw->my_epid;
     32	int epidx;
     33
     34	seq_puts(m, "EPID\tSTATUS           SAME_ZONE        CONNECTED\n");
     35	for (epidx = 0; epidx < max_epid; epidx++) {
     36		if (epidx == my_epid) {
     37			seq_printf(m, "ep%d\t%-16c %-16c %-16c\n",
     38				   epidx, '-', '-', '-');
     39		} else {
     40			seq_printf(m, "ep%d\t%-16s %-16c %-16c\n",
     41				   epidx,
     42				   ep_status_string[fjes_hw_get_partner_ep_status(hw, epidx)],
     43				   fjes_hw_epid_is_same_zone(hw, epidx) ? 'Y' : 'N',
     44				   fjes_hw_epid_is_shared(hw->hw_info.share, epidx) ? 'Y' : 'N');
     45		}
     46	}
     47
     48	return 0;
     49}
     50DEFINE_SHOW_ATTRIBUTE(fjes_dbg_status);
     51
     52void fjes_dbg_adapter_init(struct fjes_adapter *adapter)
     53{
     54	const char *name = dev_name(&adapter->plat_dev->dev);
     55
     56	adapter->dbg_adapter = debugfs_create_dir(name, fjes_debug_root);
     57
     58	debugfs_create_file("status", 0444, adapter->dbg_adapter, adapter,
     59			    &fjes_dbg_status_fops);
     60}
     61
     62void fjes_dbg_adapter_exit(struct fjes_adapter *adapter)
     63{
     64	debugfs_remove_recursive(adapter->dbg_adapter);
     65	adapter->dbg_adapter = NULL;
     66}
     67
     68void fjes_dbg_init(void)
     69{
     70	fjes_debug_root = debugfs_create_dir(fjes_driver_name, NULL);
     71}
     72
     73void fjes_dbg_exit(void)
     74{
     75	debugfs_remove_recursive(fjes_debug_root);
     76	fjes_debug_root = NULL;
     77}
     78
     79#endif /* CONFIG_DEBUG_FS */