64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
/*
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* interface to Blackfin CEC
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*
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* Copyright 2009 Analog Devices Inc.
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* Licensed under the GPL-2 or later.
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*/
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#ifndef __ASM_BFIN_IRQFLAGS_H__
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#define __ASM_BFIN_IRQFLAGS_H__
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#ifdef CONFIG_SMP
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# include <asm/pda.h>
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# include <asm/processor.h>
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/* Forward decl needed due to cdef inter dependencies */
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static inline uint32_t __pure bfin_dspid(void);
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# define blackfin_core_id() (bfin_dspid() & 0xff)
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# define bfin_irq_flags cpu_pda[blackfin_core_id()].imask
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#else
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extern unsigned long bfin_irq_flags;
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#endif
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static inline void bfin_sti(unsigned long flags)
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{
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asm volatile("sti %0;" : : "d" (flags));
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}
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static inline unsigned long bfin_cli(void)
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{
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unsigned long flags;
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asm volatile("cli %0;" : "=d" (flags));
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return flags;
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}
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static inline void raw_local_irq_disable(void)
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{
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bfin_cli();
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}
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static inline void raw_local_irq_enable(void)
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{
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bfin_sti(bfin_irq_flags);
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}
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#define raw_local_save_flags(flags) do { (flags) = bfin_read_IMASK(); } while (0)
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#define raw_irqs_disabled_flags(flags) (((flags) & ~0x3f) == 0)
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static inline void raw_local_irq_restore(unsigned long flags)
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{
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if (!raw_irqs_disabled_flags(flags))
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raw_local_irq_enable();
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}
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static inline unsigned long __raw_local_irq_save(void)
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{
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unsigned long flags = bfin_cli();
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#ifdef CONFIG_DEBUG_HWERR
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bfin_sti(0x3f);
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#endif
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return flags;
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}
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#define raw_local_irq_save(flags) do { (flags) = __raw_local_irq_save(); } while (0)
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#endif
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