/* SPDX-License-Identifier: GPL-2.0 */
/*
* Access to VGA videoram
*
* ( c ) 1998 Martin Mares < mj @ ucw . cz >
*/
#ifndef _ASM_VGA_H
#define _ASM_VGA_H
#include <linux/string.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(0 x10000000L + (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);
}
static inline void scr_memsetw(u16 *s, u16 v, unsigned int count)
{
memset16(s, cpu_to_le16(v), count / 2 );
}
#define VT_BUF_HAVE_MEMSETW
#endif /* _ASM_VGA_H */
Messung V0.5 in Prozent C=91 H=78 G=84
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-01)
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