2 * Access to VGA videoram
4 * (c) 1998 Martin Mares <mj@ucw.cz>
8 #ifndef _LINUX_ASM_VGA_H_
9 #define _LINUX_ASM_VGA_H_
13 #include <linux/config.h>
15 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
17 #define VT_BUF_HAVE_RW
19 * These are only needed for supporting VGA or MDA text mode, which use little
20 * endian byte ordering.
21 * In other cases, we can optimize by using native byte ordering and
22 * <linux/vt_buffer.h> has already done the right job for us.
25 extern inline void scr_writew(u16 val, volatile u16 *addr)
30 extern inline u16 scr_readw(volatile const u16 *addr)
35 #define VT_BUF_HAVE_MEMCPYW
36 #define scr_memcpyw memcpy
38 #endif /* !CONFIG_VGA_CONSOLE && !CONFIG_MDA_CONSOLE */
40 extern unsigned long vgacon_remap_base;
41 #define VGA_MAP_MEM(x) (x + vgacon_remap_base)
42 #define vga_readb(x) (*(x))
43 #define vga_writeb(x,y) (*(y) = (x))
46 #endif /* __KERNEL__ */