arch/loongarch/include/asm/fixmap.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * fixmap.h: compile-time virtual memory allocation
   4  *
   5  * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
   6  */
   7
   8 #ifndef _ASM_FIXMAP_H
   9 #define _ASM_FIXMAP_H
  10
  11 #define NR_FIX_BTMAPS 64
  12
  13 enum fixed_addresses {
  14         FIX_HOLE,
  15         FIX_EARLYCON_MEM_BASE,
  16         __end_of_fixed_addresses
  17 };
  18
  19 #define FIXADDR_SIZE    (__end_of_fixed_addresses << PAGE_SHIFT)
  20 #define FIXADDR_START   (FIXADDR_TOP - FIXADDR_SIZE)
  21 #define FIXMAP_PAGE_IO  PAGE_KERNEL_SUC
  22
  23 extern void __set_fixmap(enum fixed_addresses idx,
  24                          phys_addr_t phys, pgprot_t flags);
  25
  26 #include <asm-generic/fixmap.h>
  27
  28 #endif