1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2
3 #ifndef __ASM_CSKY_IO_H
4 #define __ASM_CSKY_IO_H
5
6 #include <linux/pgtable.h>
7 #include <linux/types.h>
8
9 /*
10 * I/O memory access primitives. Reads are ord
11 * following Normal memory access. Writes are
12 * Normal memory access.
13 *
14 * For CACHEV1 (807, 810), store instruction c
15 * another mb() to prevent st fast retire.
16 *
17 * For CACHEV2 (860), store instruction with P
18 * fast retire.
19 */
20 #define readb(c) ({ u8 __v = r
21 #define readw(c) ({ u16 __v = r
22 #define readl(c) ({ u32 __v = r
23
24 #ifdef CONFIG_CPU_HAS_CACHEV2
25 #define writeb(v,c) ({ wmb(); writ
26 #define writew(v,c) ({ wmb(); writ
27 #define writel(v,c) ({ wmb(); writ
28 #else
29 #define writeb(v,c) ({ wmb(); writ
30 #define writew(v,c) ({ wmb(); writ
31 #define writel(v,c) ({ wmb(); writ
32 #endif
33
34 /*
35 * String version of I/O memory access operati
36 */
37 extern void __memcpy_fromio(void *, const vola
38 extern void __memcpy_toio(volatile void __iome
39 extern void __memset_io(volatile void __iomem
40
41 #define memset_io(c,v,l) __memset_io((c
42 #define memcpy_fromio(a,c,l) __memcpy_fromi
43 #define memcpy_toio(c,a,l) __memcpy_toio(
44
45 /*
46 * I/O memory mapping functions.
47 */
48 #define ioremap_wc(addr, size) \
49 ioremap_prot((addr), (size), \
50 (_PAGE_IOREMAP & ~_CACHE_MASK)
51
52 #include <asm-generic/io.h>
53
54 #endif /* __ASM_CSKY_IO_H */
55
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