include/asm-powerpc/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 #include <linux/config.h>
  16
  17 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
  18
  19 #define VT_BUF_HAVE_RW
  20 /*
  21  *  These are only needed for supporting VGA or MDA text mode, which use little
  22  *  endian byte ordering.
  23  *  In other cases, we can optimize by using native byte ordering and
  24  *  <linux/vt_buffer.h> has already done the right job for us.
  25  */
  26
  27 static inline void scr_writew(u16 val, volatile u16 *addr)
  28 {
  29     st_le16(addr, val);
  30 }
  31
  32 static inline u16 scr_readw(volatile const u16 *addr)
  33 {
  34     return ld_le16(addr);
  35 }
  36
  37 #define VT_BUF_HAVE_MEMCPYW
  38 #define scr_memcpyw     memcpy
  39
  40 #endif /* !CONFIG_VGA_CONSOLE && !CONFIG_MDA_CONSOLE */
  41
  42 extern unsigned long vgacon_remap_base;
  43
  44 #ifdef __powerpc64__
  45 #define VGA_MAP_MEM(x) ((unsigned long) ioremap((x), 0))
  46 #else
  47 #define VGA_MAP_MEM(x) (x + vgacon_remap_base)
  48 #endif
  49
  50 #define vga_readb(x) (*(x))
  51 #define vga_writeb(x,y) (*(y) = (x))
  52
  53 #endif  /* __KERNEL__ */
  54 #endif  /* _ASM_POWERPC_VGA_H_ */