1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * include/asm-mips/dec/ioasic.h
4 *
5 * DEC I/O ASIC access operations.
6 *
7 * Copyright (C) 2000, 2002, 2003 Maciej W. Rozycki
8 */
9
10 #ifndef __ASM_DEC_IOASIC_H
11 #define __ASM_DEC_IOASIC_H
12
13 #include <linux/spinlock.h>
14 #include <linux/types.h>
15
16 extern spinlock_t ioasic_ssr_lock;
17
18 extern volatile u32 *ioasic_base;
19
20 static inline void ioasic_write(unsigned int reg, u32 v)
21 {
22 ioasic_base[reg / 4] = v;
23 }
24
25 static inline u32 ioasic_read(unsigned int reg)
26 {
27 return ioasic_base[reg / 4];
28 }
29
30 extern void init_ioasic_irqs(int base);
31
32 extern int dec_ioasic_clocksource_init(void);
33
34 #endif /* __ASM_DEC_IOASIC_H */
35
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