/* * Access to VGA videoram * * (c) 1998 Martin Mares <mj@ucw.cz> */ #ifndef _ASM_VGA_H #define _ASM_VGA_H #include <asm/byteorder.h> /* * On the PC, we can just recalculate addresses and then * access the videoram directly without any black magic. */ #define VGA_MAP_MEM(x,s) (0xb0000000L + (unsigned long)(x)) #define vga_readb(x) (*(x)) #define vga_writeb(x,y) (*(y) = (x)) #define VT_BUF_HAVE_RW /* * These are only needed for supporting VGA or MDA text mode, which use little * endian byte ordering. * In other cases, we can optimize by using native byte ordering and * <linux/vt_buffer.h> has already done the right job for us. */ #undef scr_writew #undef scr_readw static inline void scr_writew(u16 val, volatile u16 *addr) { *addr = cpu_to_le16(val); } static inline u16 scr_readw(volatile const u16 *addr) { return le16_to_cpu(*addr); } #define scr_memcpyw(d, s, c) memcpy(d, s, c) #define scr_memmovew(d, s, c) memmove(d, s, c) #define VT_BUF_HAVE_MEMCPYW #define VT_BUF_HAVE_MEMMOVEW #endif /* _ASM_VGA_H */