LXR linux/arch/powerpc/include/asm/vga.h

   1#ifndef _ASM_POWERPC_VGA_H_
   2#define _ASM_POWERPC_VGA_H_
   3
   4#ifdef __KERNEL__
   5
   6/*
   7 *      Access to VGA videoram
   8 *
   9 *      (c) 1998 Martin Mares <mj@ucw.cz>
  10 */
  11
  12
  13#include <asm/io.h>
  14
  15
  16#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
  17
  18#define VT_BUF_HAVE_RW
  19/*
  20 *  These are only needed for supporting VGA or MDA text mode, which use little
  21 *  endian byte ordering.
  22 *  In other cases, we can optimize by using native byte ordering and
  23 *  <linux/vt_buffer.h> has already done the right job for us.
  24 */
  25
  26static inline void scr_writew(u16 val, volatile u16 *addr)
  27{
  28    st_le16(addr, val);
  29}
  30
  31static inline u16 scr_readw(volatile const u16 *addr)
  32{
  33    return ld_le16(addr);
  34}
  35
  36#define VT_BUF_HAVE_MEMCPYW
  37#define scr_memcpyw     memcpy
  38
  39#endif /* !CONFIG_VGA_CONSOLE && !CONFIG_MDA_CONSOLE */
  40
  41extern unsigned long vgacon_remap_base;
  42
  43#ifdef __powerpc64__
  44#define VGA_MAP_MEM(x,s) ((unsigned long) ioremap((x), s))
  45#else
  46#define VGA_MAP_MEM(x,s) (x + vgacon_remap_base)
  47#endif
  48
  49#define vga_readb(x) (*(x))
  50#define vga_writeb(x,y) (*(y) = (x))
  51
  52#endif  /* __KERNEL__ */
  53#endif  /* _ASM_POWERPC_VGA_H_ */
  54