1022f324cSLucas De Marchi // SPDX-License-Identifier: MIT
2022f324cSLucas De Marchi /*
3022f324cSLucas De Marchi * Copyright © 2019 Intel Corporation
4022f324cSLucas De Marchi */
5022f324cSLucas De Marchi
6022f324cSLucas De Marchi #include <linux/debugfs.h>
7022f324cSLucas De Marchi
8022f324cSLucas De Marchi #include "i915_drv.h"
9b7563ec7SMatt Roper #include "intel_gt.h"
10022f324cSLucas De Marchi #include "intel_gt_debugfs.h"
1100142bceSLucas De Marchi #include "intel_gt_engines_debugfs.h"
12e7858254SMatt Roper #include "intel_gt_mcr.h"
1323f6a829SLucas De Marchi #include "intel_gt_pm_debugfs.h"
14022f324cSLucas De Marchi #include "intel_sseu_debugfs.h"
15022f324cSLucas De Marchi #include "uc/intel_uc_debugfs.h"
16022f324cSLucas De Marchi
intel_gt_debugfs_reset_show(struct intel_gt * gt,u64 * val)1782a149a6SAndi Shyti int intel_gt_debugfs_reset_show(struct intel_gt *gt, u64 *val)
1882a149a6SAndi Shyti {
1982a149a6SAndi Shyti int ret = intel_gt_terminally_wedged(gt);
2082a149a6SAndi Shyti
2182a149a6SAndi Shyti switch (ret) {
2282a149a6SAndi Shyti case -EIO:
2382a149a6SAndi Shyti *val = 1;
2482a149a6SAndi Shyti return 0;
2582a149a6SAndi Shyti case 0:
2682a149a6SAndi Shyti *val = 0;
2782a149a6SAndi Shyti return 0;
2882a149a6SAndi Shyti default:
2982a149a6SAndi Shyti return ret;
3082a149a6SAndi Shyti }
3182a149a6SAndi Shyti }
3282a149a6SAndi Shyti
intel_gt_debugfs_reset_store(struct intel_gt * gt,u64 val)337d14db8bSAndi Shyti void intel_gt_debugfs_reset_store(struct intel_gt *gt, u64 val)
3482a149a6SAndi Shyti {
3582a149a6SAndi Shyti /* Flush any previous reset before applying for a new one */
3682a149a6SAndi Shyti wait_event(gt->reset.queue,
3782a149a6SAndi Shyti !test_bit(I915_RESET_BACKOFF, >->reset.flags));
3882a149a6SAndi Shyti
3982a149a6SAndi Shyti intel_gt_handle_error(gt, val, I915_ERROR_CAPTURE,
4082a149a6SAndi Shyti "Manually reset engine mask to %llx", val);
4182a149a6SAndi Shyti }
4282a149a6SAndi Shyti
4382a149a6SAndi Shyti /*
4482a149a6SAndi Shyti * keep the interface clean where the first parameter
4582a149a6SAndi Shyti * is a 'struct intel_gt *' instead of 'void *'
4682a149a6SAndi Shyti */
__intel_gt_debugfs_reset_show(void * data,u64 * val)4782a149a6SAndi Shyti static int __intel_gt_debugfs_reset_show(void *data, u64 *val)
4882a149a6SAndi Shyti {
4982a149a6SAndi Shyti return intel_gt_debugfs_reset_show(data, val);
5082a149a6SAndi Shyti }
5182a149a6SAndi Shyti
__intel_gt_debugfs_reset_store(void * data,u64 val)5282a149a6SAndi Shyti static int __intel_gt_debugfs_reset_store(void *data, u64 val)
5382a149a6SAndi Shyti {
547d14db8bSAndi Shyti intel_gt_debugfs_reset_store(data, val);
557d14db8bSAndi Shyti
567d14db8bSAndi Shyti return 0;
5782a149a6SAndi Shyti }
5882a149a6SAndi Shyti
5982a149a6SAndi Shyti DEFINE_SIMPLE_ATTRIBUTE(reset_fops, __intel_gt_debugfs_reset_show,
6082a149a6SAndi Shyti __intel_gt_debugfs_reset_store, "%llu\n");
6182a149a6SAndi Shyti
steering_show(struct seq_file * m,void * data)62b7563ec7SMatt Roper static int steering_show(struct seq_file *m, void *data)
63b7563ec7SMatt Roper {
64b7563ec7SMatt Roper struct drm_printer p = drm_seq_file_printer(m);
65b7563ec7SMatt Roper struct intel_gt *gt = m->private;
66b7563ec7SMatt Roper
673fe6c7f5SMatt Roper intel_gt_mcr_report_steering(&p, gt, true);
68b7563ec7SMatt Roper
69b7563ec7SMatt Roper return 0;
70b7563ec7SMatt Roper }
71b7563ec7SMatt Roper DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(steering);
72b7563ec7SMatt Roper
gt_debugfs_register(struct intel_gt * gt,struct dentry * root)7382a149a6SAndi Shyti static void gt_debugfs_register(struct intel_gt *gt, struct dentry *root)
7482a149a6SAndi Shyti {
7582a149a6SAndi Shyti static const struct intel_gt_debugfs_file files[] = {
7682a149a6SAndi Shyti { "reset", &reset_fops, NULL },
77b7563ec7SMatt Roper { "steering", &steering_fops },
7882a149a6SAndi Shyti };
7982a149a6SAndi Shyti
8082a149a6SAndi Shyti intel_gt_debugfs_register_files(root, files, ARRAY_SIZE(files), gt);
8182a149a6SAndi Shyti }
8282a149a6SAndi Shyti
intel_gt_debugfs_register(struct intel_gt * gt)83022f324cSLucas De Marchi void intel_gt_debugfs_register(struct intel_gt *gt)
84022f324cSLucas De Marchi {
85022f324cSLucas De Marchi struct dentry *root;
86*70b5ffb3SAndi Shyti char gtname[4];
87022f324cSLucas De Marchi
88022f324cSLucas De Marchi if (!gt->i915->drm.primary->debugfs_root)
89022f324cSLucas De Marchi return;
90022f324cSLucas De Marchi
91*70b5ffb3SAndi Shyti snprintf(gtname, sizeof(gtname), "gt%u", gt->info.id);
92*70b5ffb3SAndi Shyti root = debugfs_create_dir(gtname, gt->i915->drm.primary->debugfs_root);
93022f324cSLucas De Marchi if (IS_ERR(root))
94022f324cSLucas De Marchi return;
95022f324cSLucas De Marchi
9682a149a6SAndi Shyti gt_debugfs_register(gt, root);
9782a149a6SAndi Shyti
9800142bceSLucas De Marchi intel_gt_engines_debugfs_register(gt, root);
9923f6a829SLucas De Marchi intel_gt_pm_debugfs_register(gt, root);
100022f324cSLucas De Marchi intel_sseu_debugfs_register(gt, root);
101022f324cSLucas De Marchi
102022f324cSLucas De Marchi intel_uc_debugfs_register(>->uc, root);
103022f324cSLucas De Marchi }
104022f324cSLucas De Marchi
intel_gt_debugfs_register_files(struct dentry * root,const struct intel_gt_debugfs_file * files,unsigned long count,void * data)105022f324cSLucas De Marchi void intel_gt_debugfs_register_files(struct dentry *root,
106022f324cSLucas De Marchi const struct intel_gt_debugfs_file *files,
107022f324cSLucas De Marchi unsigned long count, void *data)
108022f324cSLucas De Marchi {
109022f324cSLucas De Marchi while (count--) {
110022f324cSLucas De Marchi umode_t mode = files->fops->write ? 0644 : 0444;
111022f324cSLucas De Marchi
112022f324cSLucas De Marchi if (!files->eval || files->eval(data))
113022f324cSLucas De Marchi debugfs_create_file(files->name,
114022f324cSLucas De Marchi mode, root, data,
115022f324cSLucas De Marchi files->fops);
116022f324cSLucas De Marchi
117022f324cSLucas De Marchi files++;
118022f324cSLucas De Marchi }
119022f324cSLucas De Marchi }
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