Viewing file:  vga.h (1.07 KB) -rw-r--r--
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#ifndef _ASM_POWERPC_VGA_H_
#define _ASM_POWERPC_VGA_H_
#ifdef __KERNEL__
/*
* Access to VGA videoram
*
* (c) 1998 Martin Mares <mj@ucw.cz>
*/
#include <asm/io.h>
#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
#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.
*/
static inline void scr_writew(u16 val, volatile u16 *addr)
{
st_le16(addr, val);
}
static inline u16 scr_readw(volatile const u16 *addr)
{
return ld_le16(addr);
}
#define VT_BUF_HAVE_MEMCPYW
#define scr_memcpyw memcpy
#endif /* !CONFIG_VGA_CONSOLE && !CONFIG_MDA_CONSOLE */
extern unsigned long vgacon_remap_base;
#ifdef __powerpc64__
#define VGA_MAP_MEM(x,s) ((unsigned long) ioremap((x), s))
#else
#define VGA_MAP_MEM(x,s) (x + vgacon_remap_base)
#endif
#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_VGA_H_ */
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