53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
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#ifndef __SYS_H__
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#define __SYS_H__
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#include "types.h"
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static inline void writel(u32 val, unsigned long int addr)
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{
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(*(volatile u32*) (addr)) = (val);
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}
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static inline void writew(u16 val, unsigned long int addr)
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{
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(*(volatile u16*) (addr)) = (val);
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}
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static inline void writeb(u8 val, unsigned long int addr)
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{
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(*(volatile u8*) (addr)) = (val);
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}
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static inline u32 readl(unsigned long int addr)
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{
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return (*(volatile u32*) (addr));
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}
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static inline u16 readw(unsigned long int addr)
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{
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return (*(volatile u16*) (addr));
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}
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static inline u8 readb(unsigned long int addr)
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{
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return (*(volatile u8*) (addr));
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}
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/* Set the bits of addr to 1, which in mask is 1 */
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static inline void set_bits(u32 mask, unsigned long int addr)
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{
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(*(volatile u32*) (addr)) |= mask;
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}
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/* Clear the bits of addr to 0, which in mask is 1 */
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static inline void clr_bits(u32 mask, unsigned long int addr)
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{
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(*(volatile u32*) (addr)) &= ~(mask);
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}
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/* Return True if all the bits of addr are 1, which is 1 in mask.
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Else, return False. */
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static inline u32 is_bits_set(u32 mask, unsigned long int addr)
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{
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return (((*(volatile u32*) (addr)) & (mask)) == (mask));
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}
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#endif /* end of __SYS_H__ */
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