1/*
 2 *  C6X IRQ flag handling
 3 *
 4 * Copyright (C) 2010 Texas Instruments Incorporated
 5 * Written by Mark Salter (msalter@redhat.com)
 6 *
 7 * This program is free software; you can redistribute it and/or
 8 * modify it under the terms of the GNU General Public Licence
 9 * as published by the Free Software Foundation; either version
10 * 2 of the Licence, or (at your option) any later version.
11 */
12
13#ifndef _ASM_IRQFLAGS_H
14#define _ASM_IRQFLAGS_H
15
16#ifndef __ASSEMBLY__
17
18/* read interrupt enabled status */
19static inline unsigned long arch_local_save_flags(void)
20{
21	unsigned long flags;
22
23	asm volatile (" mvc .s2 CSR,%0\n" : "=b"(flags));
24	return flags;
25}
26
27/* set interrupt enabled status */
28static inline void arch_local_irq_restore(unsigned long flags)
29{
30	asm volatile (" mvc .s2 %0,CSR\n" : : "b"(flags) : "memory");
31}
32
33/* unconditionally enable interrupts */
34static inline void arch_local_irq_enable(void)
35{
36	unsigned long flags = arch_local_save_flags();
37	flags |= 1;
38	arch_local_irq_restore(flags);
39}
40
41/* unconditionally disable interrupts */
42static inline void arch_local_irq_disable(void)
43{
44	unsigned long flags = arch_local_save_flags();
45	flags &= ~1;
46	arch_local_irq_restore(flags);
47}
48
49/* get status and disable interrupts */
50static inline unsigned long arch_local_irq_save(void)
51{
52	unsigned long flags;
53
54	flags = arch_local_save_flags();
55	arch_local_irq_restore(flags & ~1);
56	return flags;
57}
58
59/* test flags */
60static inline int arch_irqs_disabled_flags(unsigned long flags)
61{
62	return (flags & 1) == 0;
63}
64
65/* test hardware interrupt enable bit */
66static inline int arch_irqs_disabled(void)
67{
68	return arch_irqs_disabled_flags(arch_local_save_flags());
69}
70
71#endif /* __ASSEMBLY__ */
72#endif /* __ASM_IRQFLAGS_H */

 1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 *  C6X IRQ flag handling
 4 *
 5 * Copyright (C) 2010 Texas Instruments Incorporated
 6 * Written by Mark Salter (msalter@redhat.com)
 
 
 
 
 
 7 */
 8
 9#ifndef _ASM_IRQFLAGS_H
10#define _ASM_IRQFLAGS_H
11
12#ifndef __ASSEMBLY__
13
14/* read interrupt enabled status */
15static inline unsigned long arch_local_save_flags(void)
16{
17	unsigned long flags;
18
19	asm volatile (" mvc .s2 CSR,%0\n" : "=b"(flags));
20	return flags;
21}
22
23/* set interrupt enabled status */
24static inline void arch_local_irq_restore(unsigned long flags)
25{
26	asm volatile (" mvc .s2 %0,CSR\n" : : "b"(flags) : "memory");
27}
28
29/* unconditionally enable interrupts */
30static inline void arch_local_irq_enable(void)
31{
32	unsigned long flags = arch_local_save_flags();
33	flags |= 1;
34	arch_local_irq_restore(flags);
35}
36
37/* unconditionally disable interrupts */
38static inline void arch_local_irq_disable(void)
39{
40	unsigned long flags = arch_local_save_flags();
41	flags &= ~1;
42	arch_local_irq_restore(flags);
43}
44
45/* get status and disable interrupts */
46static inline unsigned long arch_local_irq_save(void)
47{
48	unsigned long flags;
49
50	flags = arch_local_save_flags();
51	arch_local_irq_restore(flags & ~1);
52	return flags;
53}
54
55/* test flags */
56static inline int arch_irqs_disabled_flags(unsigned long flags)
57{
58	return (flags & 1) == 0;
59}
60
61/* test hardware interrupt enable bit */
62static inline int arch_irqs_disabled(void)
63{
64	return arch_irqs_disabled_flags(arch_local_save_flags());
65}
66
67#endif /* __ASSEMBLY__ */
68#endif /* __ASM_IRQFLAGS_H */