drivers/gpu/drm/i915/gt/intel_gt_debugfs.h

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * Copyright © 2019 Intel Corporation
   4  */
   5
   6 #ifndef INTEL_GT_DEBUGFS_H
   7 #define INTEL_GT_DEBUGFS_H
   8
   9 #include <linux/file.h>
  10
  11 struct intel_gt;
  12
  13 #define __GT_DEBUGFS_ATTRIBUTE_FOPS(__name)                             \
  14 static const struct file_operations __name ## _fops = {                 \
  15         .owner = THIS_MODULE,                                           \
  16         .open = __name ## _open,                                        \
  17         .read = seq_read,                                               \
  18         .llseek = seq_lseek,                                            \
  19         .release = single_release,                                      \
  20 }
  21
  22 #define DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(__name)                       \
  23 static int __name ## _open(struct inode *inode, struct file *file)      \
  24 {                                                                       \
  25         return single_open(file, __name ## _show, inode->i_private);    \
  26 }                                                                       \
  27 __GT_DEBUGFS_ATTRIBUTE_FOPS(__name)
  28
  29 #define DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE_WITH_SIZE(__name, __size_vf)          \
  30 static int __name ## _open(struct inode *inode, struct file *file)              \
  31 {                                                                               \
  32         return single_open_size(file, __name ## _show, inode->i_private,        \
  33                             __size_vf(inode->i_private));                       \
  34 }                                                                               \
  35 __GT_DEBUGFS_ATTRIBUTE_FOPS(__name)
  36
  37 void intel_gt_debugfs_register(struct intel_gt *gt);
  38
  39 struct intel_gt_debugfs_file {
  40         const char *name;
  41         const struct file_operations *fops;
  42         bool (*eval)(void *data);
  43 };
  44
  45 void intel_gt_debugfs_register_files(struct dentry *root,
  46                                      const struct intel_gt_debugfs_file *files,
  47                                      unsigned long count, void *data);
  48
  49 /* functions that need to be accessed by the upper level non-gt interfaces */
  50 int intel_gt_debugfs_reset_show(struct intel_gt *gt, u64 *val);
  51 void intel_gt_debugfs_reset_store(struct intel_gt *gt, u64 val);
  52
  53 #endif /* INTEL_GT_DEBUGFS_H */