| /* |
| * Access to VGA videoram |
| * |
| * (c) 1998 Martin Mares <mj@ucw.cz> |
| */ |
| #ifndef _ASM_VGA_H |
| #define _ASM_VGA_H |
| |
| #include <asm/addrspace.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) CKSEG1ADDR(0x10000000L + (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 */ |
