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 
13 /* Represent resource window for bridge devices */
14 struct resource_win {
15 	struct resource res;		/* In master (CPU) address space */
16 	resource_size_t offset;		/* Translation offset for bridge */
17 };
18 
19 /*
20  * Common resource list management data structure and interfaces to support
21  * ACPI, PNP and PCI host bridge etc.
22  */
23 struct resource_entry {
24 	struct list_head	node;
25 	struct resource		*res;	/* In master (CPU) address space */
26 	resource_size_t		offset;	/* Translation offset for bridge */
27 	struct resource		__res;	/* Default storage for res */
28 };
29 
30 extern struct resource_entry *
31 resource_list_create_entry(struct resource *res, size_t extra_size);
32 extern void resource_list_free(struct list_head *head);
33 
resource_list_add(struct resource_entry * entry,struct list_head * head)34 static inline void resource_list_add(struct resource_entry *entry,
35 				     struct list_head *head)
36 {
37 	list_add(&entry->node, head);
38 }
39 
resource_list_add_tail(struct resource_entry * entry,struct list_head * head)40 static inline void resource_list_add_tail(struct resource_entry *entry,
41 					  struct list_head *head)
42 {
43 	list_add_tail(&entry->node, head);
44 }
45 
resource_list_del(struct resource_entry * entry)46 static inline void resource_list_del(struct resource_entry *entry)
47 {
48 	list_del(&entry->node);
49 }
50 
resource_list_free_entry(struct resource_entry * entry)51 static inline void resource_list_free_entry(struct resource_entry *entry)
52 {
53 	kfree(entry);
54 }
55 
56 static inline void
resource_list_destroy_entry(struct resource_entry * entry)57 resource_list_destroy_entry(struct resource_entry *entry)
58 {
59 	resource_list_del(entry);
60 	resource_list_free_entry(entry);
61 }
62 
63 #define resource_list_for_each_entry(entry, list)	\
64 	list_for_each_entry((entry), (list), node)
65 
66 #define resource_list_for_each_entry_safe(entry, tmp, list)	\
67 	list_for_each_entry_safe((entry), (tmp), (list), node)
68 
69 static inline struct resource_entry *
resource_list_first_type(struct list_head * list,unsigned long type)70 resource_list_first_type(struct list_head *list, unsigned long type)
71 {
72 	struct resource_entry *entry;
73 
74 	resource_list_for_each_entry(entry, list) {
75 		if (resource_type(entry->res) == type)
76 			return entry;
77 	}
78 	return NULL;
79 }
80 
81 #endif /* _LINUX_RESOURCE_EXT_H */
82