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80 lines
1.6 KiB
80 lines
1.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _M68K_IRQFLAGS_H |
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#define _M68K_IRQFLAGS_H |
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#include <linux/types.h> |
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#include <linux/preempt.h> |
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#include <asm/thread_info.h> |
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#include <asm/entry.h> |
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static inline unsigned long arch_local_save_flags(void) |
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{ |
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unsigned long flags; |
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asm volatile ("movew %%sr,%0" : "=d" (flags) : : "memory"); |
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return flags; |
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} |
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static inline void arch_local_irq_disable(void) |
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{ |
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#ifdef CONFIG_COLDFIRE |
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asm volatile ( |
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"move %/sr,%%d0 \n\t" |
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"ori.l #0x0700,%%d0 \n\t" |
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"move %%d0,%/sr \n" |
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: /* no outputs */ |
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: |
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: "cc", "%d0", "memory"); |
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#else |
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asm volatile ("oriw #0x0700,%%sr" : : : "memory"); |
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#endif |
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} |
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static inline void arch_local_irq_enable(void) |
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{ |
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#if defined(CONFIG_COLDFIRE) |
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asm volatile ( |
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"move %/sr,%%d0 \n\t" |
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"andi.l #0xf8ff,%%d0 \n\t" |
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"move %%d0,%/sr \n" |
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: /* no outputs */ |
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: |
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: "cc", "%d0", "memory"); |
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#else |
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# if defined(CONFIG_MMU) |
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if (MACH_IS_Q40 || !hardirq_count()) |
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# endif |
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asm volatile ( |
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"andiw %0,%%sr" |
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: |
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: "i" (ALLOWINT) |
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: "memory"); |
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#endif |
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} |
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static inline unsigned long arch_local_irq_save(void) |
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{ |
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unsigned long flags = arch_local_save_flags(); |
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arch_local_irq_disable(); |
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return flags; |
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} |
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static inline void arch_local_irq_restore(unsigned long flags) |
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{ |
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asm volatile ("movew %0,%%sr" : : "d" (flags) : "memory"); |
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} |
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static inline bool arch_irqs_disabled_flags(unsigned long flags) |
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{ |
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if (MACH_IS_ATARI) { |
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/* Ignore HSYNC = ipl 2 on Atari */ |
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return (flags & ~(ALLOWINT | 0x200)) != 0; |
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} |
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return (flags & ~ALLOWINT) != 0; |
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} |
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static inline bool arch_irqs_disabled(void) |
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{ |
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return arch_irqs_disabled_flags(arch_local_save_flags()); |
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} |
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#endif /* _M68K_IRQFLAGS_H */
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