root/include/asm-generic/vga.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *      Access to VGA videoram
   4  *
   5  *      (c) 1998 Martin Mares <mj@ucw.cz>
   6  */
   7 #ifndef __ASM_GENERIC_VGA_H
   8 #define __ASM_GENERIC_VGA_H
   9 
  10 /*
  11  *      On most architectures that support VGA, we can just
  12  *      recalculate addresses and then access the videoram
  13  *      directly without any black magic.
  14  *
  15  *      Everyone else needs to ioremap the address and use
  16  *      proper I/O accesses.
  17  */
  18 #ifndef VGA_MAP_MEM
  19 #define VGA_MAP_MEM(x, s) (unsigned long)phys_to_virt(x)
  20 #endif
  21 
  22 #define vga_readb(x) (*(x))
  23 #define vga_writeb(x, y) (*(y) = (x))
  24 
  25 #endif /* _ASM_GENERIC_VGA_H */