| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 12 | #define VT_BUF_HAVE_RW |
| 13 | #define VT_BUF_HAVE_MEMSETW |
| 14 | #define VT_BUF_HAVE_MEMCPYW |
| 15 | |
| 16 | extern inline void scr_writew(u16 val, volatile u16 *addr) |
| 17 | { |
| 18 | if (__is_ioaddr(addr)) |
| 19 | __raw_writew(val, (volatile u16 __iomem *) addr); |
| 20 | else |
| 21 | *addr = val; |
| 22 | } |
| 23 | |
| 24 | extern inline u16 scr_readw(volatile const u16 *addr) |
| 25 | { |
| 26 | if (__is_ioaddr(addr)) |
| 27 | return __raw_readw((volatile const u16 __iomem *) addr); |
| 28 | else |
| 29 | return *addr; |
| 30 | } |
| 31 | |
| 32 | extern inline void scr_memsetw(u16 *s, u16 c, unsigned int count) |
| 33 | { |
| 34 | if (__is_ioaddr(s)) |
| 35 | memsetw_io((u16 __iomem *) s, c, count); |
| 36 | else |
| 37 | memsetw(s, c, count); |
| 38 | } |
| 39 | |
| 40 | /* Do not trust that the usage will be correct; analyze the arguments. */ |
| 41 | extern void scr_memcpyw(u16 *d, const u16 *s, unsigned int count); |
| 42 | |
| 43 | /* ??? These are currently only used for downloading character sets. As |
| 44 | such, they don't need memory barriers. Is this all they are intended |
| 45 | to be used for? */ |
| 46 | #define vga_readb(a) readb((u8 __iomem *)(a)) |
| 47 | #define vga_writeb(v,a) writeb(v, (u8 __iomem *)(a)) |
| 48 | |
| 49 | #define VGA_MAP_MEM(x) ((unsigned long) ioremap(x, 0)) |
| 50 | |
| 51 | #endif |