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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intel_uc_debugfs.c (1676B)

      1// SPDX-License-Identifier: MIT
      2/*
      3 * Copyright © 2020 Intel Corporation
      4 */
      5
      6#include <linux/debugfs.h>
      7#include <linux/string_helpers.h>
      8
      9#include <drm/drm_print.h>
     10
     11#include "gt/intel_gt_debugfs.h"
     12#include "intel_guc_debugfs.h"
     13#include "intel_huc_debugfs.h"
     14#include "intel_uc.h"
     15#include "intel_uc_debugfs.h"
     16
     17static int uc_usage_show(struct seq_file *m, void *data)
     18{
     19	struct intel_uc *uc = m->private;
     20	struct drm_printer p = drm_seq_file_printer(m);
     21
     22	drm_printf(&p, "[guc] supported:%s wanted:%s used:%s\n",
     23		   str_yes_no(intel_uc_supports_guc(uc)),
     24		   str_yes_no(intel_uc_wants_guc(uc)),
     25		   str_yes_no(intel_uc_uses_guc(uc)));
     26	drm_printf(&p, "[huc] supported:%s wanted:%s used:%s\n",
     27		   str_yes_no(intel_uc_supports_huc(uc)),
     28		   str_yes_no(intel_uc_wants_huc(uc)),
     29		   str_yes_no(intel_uc_uses_huc(uc)));
     30	drm_printf(&p, "[submission] supported:%s wanted:%s used:%s\n",
     31		   str_yes_no(intel_uc_supports_guc_submission(uc)),
     32		   str_yes_no(intel_uc_wants_guc_submission(uc)),
     33		   str_yes_no(intel_uc_uses_guc_submission(uc)));
     34
     35	return 0;
     36}
     37DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(uc_usage);
     38
     39void intel_uc_debugfs_register(struct intel_uc *uc, struct dentry *gt_root)
     40{
     41	static const struct intel_gt_debugfs_file files[] = {
     42		{ "usage", &uc_usage_fops, NULL },
     43	};
     44	struct dentry *root;
     45
     46	if (!gt_root)
     47		return;
     48
     49	/* GuC and HuC go always in pair, no need to check both */
     50	if (!intel_uc_supports_guc(uc))
     51		return;
     52
     53	root = debugfs_create_dir("uc", gt_root);
     54	if (IS_ERR(root))
     55		return;
     56
     57	intel_gt_debugfs_register_files(root, files, ARRAY_SIZE(files), uc);
     58
     59	intel_guc_debugfs_register(&uc->guc, root);
     60	intel_huc_debugfs_register(&uc->huc, root);
     61}