Orange Pi5 kernel

/*
 * Copyright (C) 2014 Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
 *
 * This file is licensed under the terms of the GNU General Public License
 * version 2.  This program is licensed "as is" without any warranty of any
 * kind, whether express or implied.
 */
 
#ifndef __ASM_OPENRISC_BITOPS_ATOMIC_H
#define __ASM_OPENRISC_BITOPS_ATOMIC_H
 
static inline void set_bit(int nr, volatile unsigned long *addr)
{
<------>unsigned long mask = BIT_MASK(nr);
<------>unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
<------>unsigned long tmp;
 
<------>__asm__ __volatile__(
<------><------>"1:	l.lwa	%0,0(%1)	\n"
<------><------>"	l.or	%0,%0,%2	\n"
<------><------>"	l.swa	0(%1),%0	\n"
<------><------>"	l.bnf	1b		\n"
<------><------>"	 l.nop			\n"
<------><------>: "=&r"(tmp)
<------><------>: "r"(p), "r"(mask)
<------><------>: "cc", "memory");
}
 
static inline void clear_bit(int nr, volatile unsigned long *addr)
{
<------>unsigned long mask = BIT_MASK(nr);
<------>unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
<------>unsigned long tmp;
 
<------>__asm__ __volatile__(
<------><------>"1:	l.lwa	%0,0(%1)	\n"
<------><------>"	l.and	%0,%0,%2	\n"
<------><------>"	l.swa	0(%1),%0	\n"
<------><------>"	l.bnf	1b		\n"
<------><------>"	 l.nop			\n"
<------><------>: "=&r"(tmp)
<------><------>: "r"(p), "r"(~mask)
<------><------>: "cc", "memory");
}
 
static inline void change_bit(int nr, volatile unsigned long *addr)
{
<------>unsigned long mask = BIT_MASK(nr);
<------>unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
<------>unsigned long tmp;
 
<------>__asm__ __volatile__(
<------><------>"1:	l.lwa	%0,0(%1)	\n"
<------><------>"	l.xor	%0,%0,%2	\n"
<------><------>"	l.swa	0(%1),%0	\n"
<------><------>"	l.bnf	1b		\n"
<------><------>"	 l.nop			\n"
<------><------>: "=&r"(tmp)
<------><------>: "r"(p), "r"(mask)
<------><------>: "cc", "memory");
}
 
static inline int test_and_set_bit(int nr, volatile unsigned long *addr)
{
<------>unsigned long mask = BIT_MASK(nr);
<------>unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
<------>unsigned long old;
<------>unsigned long tmp;
 
<------>__asm__ __volatile__(
<------><------>"1:	l.lwa	%0,0(%2)	\n"
<------><------>"	l.or	%1,%0,%3	\n"
<------><------>"	l.swa	0(%2),%1	\n"
<------><------>"	l.bnf	1b		\n"
<------><------>"	 l.nop			\n"
<------><------>: "=&r"(old), "=&r"(tmp)
<------><------>: "r"(p), "r"(mask)
<------><------>: "cc", "memory");
 
<------>return (old & mask) != 0;
}
 
static inline int test_and_clear_bit(int nr, volatile unsigned long *addr)
{
<------>unsigned long mask = BIT_MASK(nr);
<------>unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
<------>unsigned long old;
<------>unsigned long tmp;
 
<------>__asm__ __volatile__(
<------><------>"1:	l.lwa	%0,0(%2)	\n"
<------><------>"	l.and	%1,%0,%3	\n"
<------><------>"	l.swa	0(%2),%1	\n"
<------><------>"	l.bnf	1b		\n"
<------><------>"	 l.nop			\n"
<------><------>: "=&r"(old), "=&r"(tmp)
<------><------>: "r"(p), "r"(~mask)
<------><------>: "cc", "memory");
 
<------>return (old & mask) != 0;
}
 
static inline int test_and_change_bit(int nr, volatile unsigned long *addr)
{
<------>unsigned long mask = BIT_MASK(nr);
<------>unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
<------>unsigned long old;
<------>unsigned long tmp;
 
<------>__asm__ __volatile__(
<------><------>"1:	l.lwa	%0,0(%2)	\n"
<------><------>"	l.xor	%1,%0,%3	\n"
<------><------>"	l.swa	0(%2),%1	\n"
<------><------>"	l.bnf	1b		\n"
<------><------>"	 l.nop			\n"
<------><------>: "=&r"(old), "=&r"(tmp)
<------><------>: "r"(p), "r"(mask)
<------><------>: "cc", "memory");
 
<------>return (old & mask) != 0;
}
 
#endif /* __ASM_OPENRISC_BITOPS_ATOMIC_H */