| /* | |
| * 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 */ |