include/linux/resource_ext.h

   1 /*
   2  * Copyright (C) 2015, Intel Corporation
   3  * Author: Jiang Liu <jiang.liu@linux.intel.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  */
  14 #ifndef _LINUX_RESOURCE_EXT_H
  15 #define _LINUX_RESOURCE_EXT_H
  16 #include <linux/types.h>
  17 #include <linux/list.h>
  18 #include <linux/ioport.h>
  19 #include <linux/slab.h>
  20
  21 /* Represent resource window for bridge devices */
  22 struct resource_win {
  23         struct resource res;            /* In master (CPU) address space */
  24         resource_size_t offset;         /* Translation offset for bridge */
  25 };
  26
  27 /*
  28  * Common resource list management data structure and interfaces to support
  29  * ACPI, PNP and PCI host bridge etc.
  30  */
  31 struct resource_entry {
  32         struct list_head        node;
  33         struct resource         *res;   /* In master (CPU) address space */
  34         resource_size_t         offset; /* Translation offset for bridge */
  35         struct resource         __res;  /* Default storage for res */
  36 };
  37
  38 extern struct resource_entry *
  39 resource_list_create_entry(struct resource *res, size_t extra_size);
  40 extern void resource_list_free(struct list_head *head);
  41
  42 static inline void resource_list_add(struct resource_entry *entry,
  43                                      struct list_head *head)
  44 {
  45         list_add(&entry->node, head);
  46 }
  47
  48 static inline void resource_list_add_tail(struct resource_entry *entry,
  49                                           struct list_head *head)
  50 {
  51         list_add_tail(&entry->node, head);
  52 }
  53
  54 static inline void resource_list_del(struct resource_entry *entry)
  55 {
  56         list_del(&entry->node);
  57 }
  58
  59 static inline void resource_list_free_entry(struct resource_entry *entry)
  60 {
  61         kfree(entry);
  62 }
  63
  64 static inline void
  65 resource_list_destroy_entry(struct resource_entry *entry)
  66 {
  67         resource_list_del(entry);
  68         resource_list_free_entry(entry);
  69 }
  70
  71 #define resource_list_for_each_entry(entry, list)       \
  72         list_for_each_entry((entry), (list), node)
  73
  74 #define resource_list_for_each_entry_safe(entry, tmp, list)     \
  75         list_for_each_entry_safe((entry), (tmp), (list), node)
  76
  77 #endif /* _LINUX_RESOURCE_EXT_H */