1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_VGA_H_
3 #define _ASM_POWERPC_VGA_H_
4 
5 #ifdef __KERNEL__
6 
7 /*
8  *	Access to VGA videoram
9  *
10  *	(c) 1998 Martin Mares <mj@ucw.cz>
11  */
12 
13 
14 #include <asm/io.h>
15 
16 
17 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
18 
19 #define VT_BUF_HAVE_RW
20 /*
21  *  These are only needed for supporting VGA or MDA text mode, which use little
22  *  endian byte ordering.
23  *  In other cases, we can optimize by using native byte ordering and
24  *  <linux/vt_buffer.h> has already done the right job for us.
25  */
26 
scr_writew(u16 val,volatile u16 * addr)27 static inline void scr_writew(u16 val, volatile u16 *addr)
28 {
29 	*addr = cpu_to_le16(val);
30 }
31 
scr_readw(volatile const u16 * addr)32 static inline u16 scr_readw(volatile const u16 *addr)
33 {
34 	return le16_to_cpu(*addr);
35 }
36 
37 #define VT_BUF_HAVE_MEMSETW
scr_memsetw(u16 * s,u16 v,unsigned int n)38 static inline void scr_memsetw(u16 *s, u16 v, unsigned int n)
39 {
40 	memset16(s, cpu_to_le16(v), n / 2);
41 }
42 
43 #define VT_BUF_HAVE_MEMCPYW
44 #define VT_BUF_HAVE_MEMMOVEW
45 #define scr_memcpyw	memcpy
46 #define scr_memmovew	memmove
47 
48 #endif /* !CONFIG_VGA_CONSOLE && !CONFIG_MDA_CONSOLE */
49 
50 #ifdef __powerpc64__
51 #define VGA_MAP_MEM(x,s) ((unsigned long) ioremap((x), s))
52 #else
53 #define VGA_MAP_MEM(x,s) (x)
54 #endif
55 
56 #define vga_readb(x) (*(x))
57 #define vga_writeb(x,y) (*(y) = (x))
58 
59 #endif	/* __KERNEL__ */
60 #endif	/* _ASM_POWERPC_VGA_H_ */
61