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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*
* Changed by HuTao Apr18, 2003
*
* Copyright was missing when I got the code so took from MIPS arch ...MaTed---
* Copyright (C) 1994 by Waldorf GMBH, written by Ralf Baechle
* Copyright (C) 1995, 96, 97, 98, 99, 2000, 2001 by Ralf Baechle
*
* Adapted for BlackFin (ADI) by Ted Ma <mated@sympatico.ca>
* Copyright (c) 2002 Arcturus Networks Inc. (www.arcturusnetworks.com)
* Copyright (c) 2002 Lineo, Inc. <mattw@lineo.com>
*/
#ifndef _BFIN_IRQ_H_
#define _BFIN_IRQ_H_
/* SYS_IRQS and NR_IRQS are defined in <mach-bf5xx/irq.h>*/
#include <mach/irq.h>
#include <asm/pda.h>
#include <asm/processor.h>
static __inline__ int irq_canonicalize(int irq)
{
return irq;
}
/*
* Interrupt configuring macros.
*/
#define local_irq_disable() \
do { \
int __tmp_dummy; \
__asm__ __volatile__( \
"cli %0;" \
: "=d" (__tmp_dummy) \
); \
} while (0)
#if ANOMALY_05000244 && defined(CONFIG_BFIN_ICACHE)
# define NOP_PAD_ANOMALY_05000244 "nop; nop;"
#else
# define NOP_PAD_ANOMALY_05000244
#endif
#ifdef CONFIG_SMP
/* Forward decl needed due to cdef inter dependencies */
static inline uint32_t __pure bfin_dspid(void);
# define blackfin_core_id() (bfin_dspid() & 0xff)
# define irq_flags cpu_pda[blackfin_core_id()].imask
#else
extern unsigned long irq_flags;
#endif
#define local_irq_enable() \
__asm__ __volatile__( \
"sti %0;" \
: \
: "d" (irq_flags) \
)
#define idle_with_irq_disabled() \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000244 \
".align 8;" \
"sti %0;" \
"idle;" \
: \
: "d" (irq_flags) \
)
#ifdef CONFIG_DEBUG_HWERR
# define __save_and_cli(x) \
__asm__ __volatile__( \
"cli %0;" \
"sti %1;" \
: "=&d" (x) \
: "d" (0x3F) \
)
#else
# define __save_and_cli(x) \
__asm__ __volatile__( \
"cli %0;" \
: "=&d" (x) \
)
#endif
#define local_save_flags(x) \
__asm__ __volatile__( \
"cli %0;" \
"sti %0;" \
: "=d" (x) \
)
#ifdef CONFIG_DEBUG_HWERR
#define irqs_enabled_from_flags(x) (((x) & ~0x3f) != 0)
#else
#define irqs_enabled_from_flags(x) ((x) != 0x1f)
#endif
#define local_irq_restore(x) \
do { \
if (irqs_enabled_from_flags(x)) \
local_irq_enable(); \
} while (0)
/* For spinlocks etc */
#define local_irq_save(x) __save_and_cli(x)
#define irqs_disabled() \
({ \
unsigned long flags; \
local_save_flags(flags); \
!irqs_enabled_from_flags(flags); \
})
#endif /* _BFIN_IRQ_H_ */
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