include/asm-ppc/vga.h

   1 /*
   2  *      Access to VGA videoram
   3  *
   4  *      (c) 1998 Martin Mares <mj@ucw.cz>
   5  */
   6
   7 #ifndef _LINUX_ASM_VGA_H_
   8 #define _LINUX_ASM_VGA_H_
   9
  10 #include <asm/io.h>
  11 #include <asm/processor.h>
  12
  13 #include <linux/config.h>
  14 #include <linux/console.h>
  15
  16 #define VT_BUF_HAVE_RW
  17
  18 extern inline void scr_writew(u16 val, u16 *addr)
  19 {
  20         /* If using vgacon (not fbcon) byteswap the writes.
  21          * If non-vgacon assume fbcon and don't byteswap
  22          * just like include/linux/vt_buffer.h.
  23          * XXX: this is a performance loss so get rid of it
  24          *      as soon as fbcon works on prep.
  25          * -- Cort
  26          */
  27 #ifdef CONFIG_FB
  28         if ( conswitchp != &vga_con )
  29                 (*(addr) = (val));
  30         else
  31 #endif /* CONFIG_FB */
  32                 st_le16(addr, val);
  33 }
  34
  35 extern inline u16 scr_readw(const u16 *addr)
  36 {
  37 #ifdef CONFIG_FB
  38         if ( conswitchp != &vga_con )
  39                 return (*(addr));
  40         else
  41 #endif /* CONFIG_FB */
  42                 return ld_le16((unsigned short *)addr);
  43 }
  44
  45 #define VT_BUF_HAVE_MEMCPYF
  46 #define scr_memcpyw_from memcpy
  47 #define scr_memcpyw_to memcpy
  48
  49 extern unsigned long vgacon_remap_base;
  50 #define VGA_MAP_MEM(x) (x + vgacon_remap_base)
  51 #define vga_readb(x) (*(x))
  52 #define vga_writeb(x,y) (*(y) = (x))
  53
  54 #endif