| /* |
| * Access to VGA videoram |
| * |
| * (c) 1998 Martin Mares <mj@ucw.cz> |
| */ |
| |
| #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 */ |