120 lines · c
1// SPDX-License-Identifier: MIT2/*3 * Copyright © 2019 Intel Corporation4 */5 6#include <linux/debugfs.h>7 8#include "i915_drv.h"9#include "intel_gt.h"10#include "intel_gt_debugfs.h"11#include "intel_gt_engines_debugfs.h"12#include "intel_gt_mcr.h"13#include "intel_gt_pm_debugfs.h"14#include "intel_sseu_debugfs.h"15#include "uc/intel_uc_debugfs.h"16 17int intel_gt_debugfs_reset_show(struct intel_gt *gt, u64 *val)18{19 int ret = intel_gt_terminally_wedged(gt);20 21 switch (ret) {22 case -EIO:23 *val = 1;24 return 0;25 case 0:26 *val = 0;27 return 0;28 default:29 return ret;30 }31}32 33void intel_gt_debugfs_reset_store(struct intel_gt *gt, u64 val)34{35 /* Flush any previous reset before applying for a new one */36 wait_event(gt->reset.queue,37 !test_bit(I915_RESET_BACKOFF, >->reset.flags));38 39 intel_gt_handle_error(gt, val, I915_ERROR_CAPTURE,40 "Manually reset engine mask to %llx", val);41}42 43/*44 * keep the interface clean where the first parameter45 * is a 'struct intel_gt *' instead of 'void *'46 */47static int __intel_gt_debugfs_reset_show(void *data, u64 *val)48{49 return intel_gt_debugfs_reset_show(data, val);50}51 52static int __intel_gt_debugfs_reset_store(void *data, u64 val)53{54 intel_gt_debugfs_reset_store(data, val);55 56 return 0;57}58 59DEFINE_SIMPLE_ATTRIBUTE(reset_fops, __intel_gt_debugfs_reset_show,60 __intel_gt_debugfs_reset_store, "%llu\n");61 62static int steering_show(struct seq_file *m, void *data)63{64 struct drm_printer p = drm_seq_file_printer(m);65 struct intel_gt *gt = m->private;66 67 intel_gt_mcr_report_steering(&p, gt, true);68 69 return 0;70}71DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(steering);72 73static void gt_debugfs_register(struct intel_gt *gt, struct dentry *root)74{75 static const struct intel_gt_debugfs_file files[] = {76 { "reset", &reset_fops, NULL },77 { "steering", &steering_fops },78 };79 80 intel_gt_debugfs_register_files(root, files, ARRAY_SIZE(files), gt);81}82 83void intel_gt_debugfs_register(struct intel_gt *gt)84{85 struct dentry *root;86 char gtname[4];87 88 if (!gt->i915->drm.primary->debugfs_root)89 return;90 91 snprintf(gtname, sizeof(gtname), "gt%u", gt->info.id);92 root = debugfs_create_dir(gtname, gt->i915->drm.primary->debugfs_root);93 if (IS_ERR(root))94 return;95 96 gt_debugfs_register(gt, root);97 98 intel_gt_engines_debugfs_register(gt, root);99 intel_gt_pm_debugfs_register(gt, root);100 intel_sseu_debugfs_register(gt, root);101 102 intel_uc_debugfs_register(>->uc, root);103}104 105void intel_gt_debugfs_register_files(struct dentry *root,106 const struct intel_gt_debugfs_file *files,107 unsigned long count, void *data)108{109 while (count--) {110 umode_t mode = files->fops->write ? 0644 : 0444;111 112 if (!files->eval || files->eval(data))113 debugfs_create_file(files->name,114 mode, root, data,115 files->fops);116 117 files++;118 }119}120