include/linux/firmware-map.h

   1 /*
   2  * include/linux/firmware-map.h:
   3  *  Copyright (C) 2008 SUSE LINUX Products GmbH
   4  *  by Bernhard Walle <bwalle@suse.de>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License v2.0 as published by
   8  * the Free Software Foundation
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  */
  16 #ifndef _LINUX_FIRMWARE_MAP_H
  17 #define _LINUX_FIRMWARE_MAP_H
  18
  19 #include <linux/list.h>
  20 #include <linux/kobject.h>
  21
  22 /*
  23  * provide a dummy interface if CONFIG_FIRMWARE_MEMMAP is disabled
  24  */
  25 #ifdef CONFIG_FIRMWARE_MEMMAP
  26
  27 /**
  28  * Adds a firmware mapping entry. This function uses kmalloc() for memory
  29  * allocation. Use firmware_map_add_early() if you want to use the bootmem
  30  * allocator.
  31  *
  32  * That function must be called before late_initcall.
  33  *
  34  * @start: Start of the memory range.
  35  * @end:   End of the memory range (inclusive).
  36  * @type:  Type of the memory range.
  37  *
  38  * Returns 0 on success, or -ENOMEM if no memory could be allocated.
  39  */
  40 int firmware_map_add(resource_size_t start, resource_size_t end,
  41                      const char *type);
  42
  43 /**
  44  * Adds a firmware mapping entry. This function uses the bootmem allocator
  45  * for memory allocation. Use firmware_map_add() if you want to use kmalloc().
  46  *
  47  * That function must be called before late_initcall.
  48  *
  49  * @start: Start of the memory range.
  50  * @end:   End of the memory range (inclusive).
  51  * @type:  Type of the memory range.
  52  *
  53  * Returns 0 on success, or -ENOMEM if no memory could be allocated.
  54  */
  55 int firmware_map_add_early(resource_size_t start, resource_size_t end,
  56                            const char *type);
  57
  58 #else /* CONFIG_FIRMWARE_MEMMAP */
  59
  60 static inline int firmware_map_add(resource_size_t start, resource_size_t end,
  61                                    const char *type)
  62 {
  63         return 0;
  64 }
  65
  66 static inline int firmware_map_add_early(resource_size_t start,
  67                                          resource_size_t end, const char *type)
  68 {
  69         return 0;
  70 }
  71
  72 #endif /* CONFIG_FIRMWARE_MEMMAP */
  73
  74 #endif /* _LINUX_FIRMWARE_MAP_H */