| Nicholas Flintham | 1e3d311 | 2013-04-10 10:48:38 +0100 | [diff] [blame^] | 1 | |
| 2 | #ifndef _LINUX_VT_BUFFER_H_ |
| 3 | #define _LINUX_VT_BUFFER_H_ |
| 4 | |
| 5 | |
| 6 | #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE) |
| 7 | #include <asm/vga.h> |
| 8 | #endif |
| 9 | |
| 10 | #ifndef VT_BUF_HAVE_RW |
| 11 | #define scr_writew(val, addr) (*(addr) = (val)) |
| 12 | #define scr_readw(addr) (*(addr)) |
| 13 | #define scr_memcpyw(d, s, c) memcpy(d, s, c) |
| 14 | #define scr_memmovew(d, s, c) memmove(d, s, c) |
| 15 | #define VT_BUF_HAVE_MEMCPYW |
| 16 | #define VT_BUF_HAVE_MEMMOVEW |
| 17 | #endif |
| 18 | |
| 19 | #ifndef VT_BUF_HAVE_MEMSETW |
| 20 | static inline void scr_memsetw(u16 *s, u16 c, unsigned int count) |
| 21 | { |
| 22 | count /= 2; |
| 23 | while (count--) |
| 24 | scr_writew(c, s++); |
| 25 | } |
| 26 | #endif |
| 27 | |
| 28 | #ifndef VT_BUF_HAVE_MEMCPYW |
| 29 | static inline void scr_memcpyw(u16 *d, const u16 *s, unsigned int count) |
| 30 | { |
| 31 | count /= 2; |
| 32 | while (count--) |
| 33 | scr_writew(scr_readw(s++), d++); |
| 34 | } |
| 35 | #endif |
| 36 | |
| 37 | #ifndef VT_BUF_HAVE_MEMMOVEW |
| 38 | static inline void scr_memmovew(u16 *d, const u16 *s, unsigned int count) |
| 39 | { |
| 40 | if (d < s) |
| 41 | scr_memcpyw(d, s, count); |
| 42 | else { |
| 43 | count /= 2; |
| 44 | d += count; |
| 45 | s += count; |
| 46 | while (count--) |
| 47 | scr_writew(scr_readw(--s), --d); |
| 48 | } |
| 49 | } |
| 50 | #endif |
| 51 | |
| 52 | #endif |