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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Access to VGA videoram
*
* (c) 1998 Martin Mares <[email protected]>
*/
#ifndef _ASM_X86_VGA_H
#define _ASM_X86_VGA_H
#include <asm/set_memory.h>
/*
* On the PC, we can just recalculate addresses and then
* access the videoram directly without any black magic.
* To support memory encryption however, we need to access
* the videoram as decrypted memory.
*/
#define VGA_MAP_MEM(x, s) \
({ \
unsigned long start = (unsigned long)phys_to_virt(x); \
\
if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) \
set_memory_decrypted(start, (s) >> PAGE_SHIFT); \
\
start; \
})
#define vga_readb(x) (*(x))
#define vga_writeb(x, y) (*(y) = (x))
#endif /* _ASM_X86_VGA_H */