resource_ext.h 2.1 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * Copyright (C) 2015, Intel Corporation
  4. * Author: Jiang Liu <jiang.liu@linux.intel.com>
  5. */
  6. #ifndef _LINUX_RESOURCE_EXT_H
  7. #define _LINUX_RESOURCE_EXT_H
  8. #include <linux/types.h>
  9. #include <linux/list.h>
  10. #include <linux/ioport.h>
  11. #include <linux/slab.h>
  12. /* Represent resource window for bridge devices */
  13. struct resource_win {
  14. struct resource res; /* In master (CPU) address space */
  15. resource_size_t offset; /* Translation offset for bridge */
  16. };
  17. /*
  18. * Common resource list management data structure and interfaces to support
  19. * ACPI, PNP and PCI host bridge etc.
  20. */
  21. struct resource_entry {
  22. struct list_head node;
  23. struct resource *res; /* In master (CPU) address space */
  24. resource_size_t offset; /* Translation offset for bridge */
  25. struct resource __res; /* Default storage for res */
  26. };
  27. extern struct resource_entry *
  28. resource_list_create_entry(struct resource *res, size_t extra_size);
  29. extern void resource_list_free(struct list_head *head);
  30. static inline void resource_list_add(struct resource_entry *entry,
  31. struct list_head *head)
  32. {
  33. list_add(&entry->node, head);
  34. }
  35. static inline void resource_list_add_tail(struct resource_entry *entry,
  36. struct list_head *head)
  37. {
  38. list_add_tail(&entry->node, head);
  39. }
  40. static inline void resource_list_del(struct resource_entry *entry)
  41. {
  42. list_del(&entry->node);
  43. }
  44. static inline void resource_list_free_entry(struct resource_entry *entry)
  45. {
  46. kfree(entry);
  47. }
  48. static inline void
  49. resource_list_destroy_entry(struct resource_entry *entry)
  50. {
  51. resource_list_del(entry);
  52. resource_list_free_entry(entry);
  53. }
  54. #define resource_list_for_each_entry(entry, list) \
  55. list_for_each_entry((entry), (list), node)
  56. #define resource_list_for_each_entry_safe(entry, tmp, list) \
  57. list_for_each_entry_safe((entry), (tmp), (list), node)
  58. static inline struct resource_entry *
  59. resource_list_first_type(struct list_head *list, unsigned long type)
  60. {
  61. struct resource_entry *entry;
  62. resource_list_for_each_entry(entry, list) {
  63. if (resource_type(entry->res) == type)
  64. return entry;
  65. }
  66. return NULL;
  67. }
  68. #endif /* _LINUX_RESOURCE_EXT_H */