GRUB2/MOD_SRC/grub-2.04/include/grub/mips64/io.h

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2009,2017  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB 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  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef GRUB_IO_H
  20 #define GRUB_IO_H       1
  21
  22 #include <grub/types.h>
  23
  24 typedef grub_addr_t grub_port_t;
  25
  26 static __inline unsigned char
  27 grub_inb (grub_port_t port)
  28 {
  29   return *(volatile grub_uint8_t *) port;
  30 }
  31
  32 static __inline unsigned short int
  33 grub_inw (grub_port_t port)
  34 {
  35   return *(volatile grub_uint16_t *) port;
  36 }
  37
  38 static __inline unsigned int
  39 grub_inl (grub_port_t port)
  40 {
  41   return *(volatile grub_uint32_t *) port;
  42 }
  43
  44 static __inline void
  45 grub_outb (unsigned char value, grub_port_t port)
  46 {
  47   *(volatile grub_uint8_t *) port = value;
  48 }
  49
  50 static __inline void
  51 grub_outw (unsigned short int value, grub_port_t port)
  52 {
  53   *(volatile grub_uint16_t *) port = value;
  54 }
  55
  56 static __inline void
  57 grub_outl (unsigned int value, grub_port_t port)
  58 {
  59   *(volatile grub_uint32_t *) port = value;
  60 }
  61
  62 #endif /* _SYS_IO_H */