include/asm-ppc64/vga.h

   1 /*
   2  *      Access to VGA videoram
   3  *
   4  *      (c) 1998 Martin Mares <mj@ucw.cz>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #ifndef _LINUX_ASM_VGA_H_
  13 #define _LINUX_ASM_VGA_H_
  14
  15 #include <asm/io.h>
  16
  17 #include <linux/config.h>
  18
  19 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
  20
  21 #define VT_BUF_HAVE_RW
  22 /*
  23  *  These are only needed for supporting VGA or MDA text mode, which use little
  24  *  endian byte ordering.
  25  *  In other cases, we can optimize by using native byte ordering and
  26  *  <linux/vt_buffer.h> has already done the right job for us.
  27  */
  28
  29 static inline void scr_writew(u16 val, volatile u16 *addr)
  30 {
  31     st_le16(addr, val);
  32 }
  33
  34 static inline u16 scr_readw(volatile const u16 *addr)
  35 {
  36     return ld_le16(addr);
  37 }
  38
  39 #define VT_BUF_HAVE_MEMCPYW
  40 #define scr_memcpyw     memcpy
  41
  42 #endif /* !CONFIG_VGA_CONSOLE && !CONFIG_MDA_CONSOLE */
  43
  44 extern unsigned long vgacon_remap_base;
  45 #define VGA_MAP_MEM(x) ((unsigned long) ioremap((x), 0))
  46
  47 #define vga_readb(x) (*(x))
  48 #define vga_writeb(x,y) (*(y) = (x))
  49
  50 #endif