projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * Access to VGA videoram | |
| 3 | * | |
| 4 | * (c) 1998 Martin Mares <mj@ucw.cz> | |
| 5 | */ | |
| 6 | ||
| 7 | #ifdef __KERNEL__ | |
| 8 | #ifndef _LINUX_ASM_VGA_H_ | |
| 9 | #define _LINUX_ASM_VGA_H_ | |
| 10 | ||
| 11 | #include <asm/io.h> | |
| 12 | ||
| 13 | #include <linux/config.h> | |
| 14 | ||
| 15 | #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE) | |
| 16 | ||
| 17 | #define VT_BUF_HAVE_RW | |
| 18 | /* | |
| 19 | * These are only needed for supporting VGA or MDA text mode, which use little | |
| 20 | * endian byte ordering. | |
| 21 | * In other cases, we can optimize by using native byte ordering and | |
| 22 | * <linux/vt_buffer.h> has already done the right job for us. | |
| 23 | */ | |
| 24 | ||
| 25 | extern inline void scr_writew(u16 val, volatile u16 *addr) | |
| 26 | { | |
| 27 | st_le16(addr, val); | |
| 28 | } | |
| 29 | ||
| 30 | extern inline u16 scr_readw(volatile const u16 *addr) | |
| 31 | { | |
| 32 | return ld_le16(addr); | |
| 33 | } | |
| 34 | ||
| 35 | #define VT_BUF_HAVE_MEMCPYW | |
| 36 | #define scr_memcpyw memcpy | |
| 37 | ||
| 38 | #endif /* !CONFIG_VGA_CONSOLE && !CONFIG_MDA_CONSOLE */ | |
| 39 | ||
| 40 | extern unsigned long vgacon_remap_base; | |
| 41 | #define VGA_MAP_MEM(x) (x + vgacon_remap_base) | |
| 42 | #define vga_readb(x) (*(x)) | |
| 43 | #define vga_writeb(x,y) (*(y) = (x)) | |
| 44 | ||
| 45 | #endif | |
| 46 | #endif /* __KERNEL__ */ |