307 lines
6.7 KiB
C
307 lines
6.7 KiB
C
/*
|
|
* 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>
|
|
|
|
#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 bfin_irq_flags cpu_pda[blackfin_core_id()].imask
|
|
#else
|
|
extern unsigned long bfin_irq_flags;
|
|
#endif
|
|
|
|
#ifdef CONFIG_IPIPE
|
|
|
|
#include <linux/ipipe_trace.h>
|
|
|
|
void __ipipe_unstall_root(void);
|
|
|
|
void __ipipe_restore_root(unsigned long flags);
|
|
|
|
#ifdef CONFIG_DEBUG_HWERR
|
|
# define __all_masked_irq_flags 0x3f
|
|
# define __save_and_cli_hw(x) \
|
|
__asm__ __volatile__( \
|
|
"cli %0;" \
|
|
"sti %1;" \
|
|
: "=&d"(x) \
|
|
: "d" (0x3F) \
|
|
)
|
|
#else
|
|
# define __all_masked_irq_flags 0x1f
|
|
# define __save_and_cli_hw(x) \
|
|
__asm__ __volatile__( \
|
|
"cli %0;" \
|
|
: "=&d"(x) \
|
|
)
|
|
#endif
|
|
|
|
#define irqs_enabled_from_flags_hw(x) ((x) != __all_masked_irq_flags)
|
|
#define raw_irqs_disabled_flags(flags) (!irqs_enabled_from_flags_hw(flags))
|
|
#define local_test_iflag_hw(x) irqs_enabled_from_flags_hw(x)
|
|
|
|
#define local_save_flags(x) \
|
|
do { \
|
|
(x) = __ipipe_test_root() ? \
|
|
__all_masked_irq_flags : bfin_irq_flags; \
|
|
barrier(); \
|
|
} while (0)
|
|
|
|
#define local_irq_save(x) \
|
|
do { \
|
|
(x) = __ipipe_test_and_stall_root() ? \
|
|
__all_masked_irq_flags : bfin_irq_flags; \
|
|
barrier(); \
|
|
} while (0)
|
|
|
|
static inline void local_irq_restore(unsigned long x)
|
|
{
|
|
barrier();
|
|
__ipipe_restore_root(x == __all_masked_irq_flags);
|
|
}
|
|
|
|
#define local_irq_disable() \
|
|
do { \
|
|
__ipipe_stall_root(); \
|
|
barrier(); \
|
|
} while (0)
|
|
|
|
static inline void local_irq_enable(void)
|
|
{
|
|
barrier();
|
|
__ipipe_unstall_root();
|
|
}
|
|
|
|
#define irqs_disabled() __ipipe_test_root()
|
|
|
|
#define local_save_flags_hw(x) \
|
|
__asm__ __volatile__( \
|
|
"cli %0;" \
|
|
"sti %0;" \
|
|
: "=d"(x) \
|
|
)
|
|
|
|
#define irqs_disabled_hw() \
|
|
({ \
|
|
unsigned long flags; \
|
|
local_save_flags_hw(flags); \
|
|
!irqs_enabled_from_flags_hw(flags); \
|
|
})
|
|
|
|
static inline unsigned long raw_mangle_irq_bits(int virt, unsigned long real)
|
|
{
|
|
/* Merge virtual and real interrupt mask bits into a single
|
|
32bit word. */
|
|
return (real & ~(1 << 31)) | ((virt != 0) << 31);
|
|
}
|
|
|
|
static inline int raw_demangle_irq_bits(unsigned long *x)
|
|
{
|
|
int virt = (*x & (1 << 31)) != 0;
|
|
*x &= ~(1L << 31);
|
|
return virt;
|
|
}
|
|
|
|
#ifdef CONFIG_IPIPE_TRACE_IRQSOFF
|
|
|
|
#define local_irq_disable_hw() \
|
|
do { \
|
|
int _tmp_dummy; \
|
|
if (!irqs_disabled_hw()) \
|
|
ipipe_trace_begin(0x80000000); \
|
|
__asm__ __volatile__ ("cli %0;" : "=d" (_tmp_dummy) : ); \
|
|
} while (0)
|
|
|
|
#define local_irq_enable_hw() \
|
|
do { \
|
|
if (irqs_disabled_hw()) \
|
|
ipipe_trace_end(0x80000000); \
|
|
__asm__ __volatile__ ("sti %0;" : : "d"(bfin_irq_flags)); \
|
|
} while (0)
|
|
|
|
#define local_irq_save_hw(x) \
|
|
do { \
|
|
__save_and_cli_hw(x); \
|
|
if (local_test_iflag_hw(x)) \
|
|
ipipe_trace_begin(0x80000001); \
|
|
} while (0)
|
|
|
|
#define local_irq_restore_hw(x) \
|
|
do { \
|
|
if (local_test_iflag_hw(x)) { \
|
|
ipipe_trace_end(0x80000001); \
|
|
local_irq_enable_hw_notrace(); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define local_irq_disable_hw_notrace() \
|
|
do { \
|
|
int _tmp_dummy; \
|
|
__asm__ __volatile__ ("cli %0;" : "=d" (_tmp_dummy) : ); \
|
|
} while (0)
|
|
|
|
#define local_irq_enable_hw_notrace() \
|
|
__asm__ __volatile__( \
|
|
"sti %0;" \
|
|
: \
|
|
: "d"(bfin_irq_flags) \
|
|
)
|
|
|
|
#define local_irq_save_hw_notrace(x) __save_and_cli_hw(x)
|
|
|
|
#define local_irq_restore_hw_notrace(x) \
|
|
do { \
|
|
if (local_test_iflag_hw(x)) \
|
|
local_irq_enable_hw_notrace(); \
|
|
} while (0)
|
|
|
|
#else /* CONFIG_IPIPE_TRACE_IRQSOFF */
|
|
|
|
#define local_irq_enable_hw() \
|
|
__asm__ __volatile__( \
|
|
"sti %0;" \
|
|
: \
|
|
: "d"(bfin_irq_flags) \
|
|
)
|
|
|
|
#define local_irq_disable_hw() \
|
|
do { \
|
|
int _tmp_dummy; \
|
|
__asm__ __volatile__ ( \
|
|
"cli %0;" \
|
|
: "=d" (_tmp_dummy)); \
|
|
} while (0)
|
|
|
|
#define local_irq_restore_hw(x) \
|
|
do { \
|
|
if (irqs_enabled_from_flags_hw(x)) \
|
|
local_irq_enable_hw(); \
|
|
} while (0)
|
|
|
|
#define local_irq_save_hw(x) __save_and_cli_hw(x)
|
|
|
|
#define local_irq_disable_hw_notrace() local_irq_disable_hw()
|
|
#define local_irq_enable_hw_notrace() local_irq_enable_hw()
|
|
#define local_irq_save_hw_notrace(x) local_irq_save_hw(x)
|
|
#define local_irq_restore_hw_notrace(x) local_irq_restore_hw(x)
|
|
|
|
#endif /* CONFIG_IPIPE_TRACE_IRQSOFF */
|
|
|
|
#else /* !CONFIG_IPIPE */
|
|
|
|
/*
|
|
* Interrupt configuring macros.
|
|
*/
|
|
#define local_irq_disable() \
|
|
do { \
|
|
int __tmp_dummy; \
|
|
__asm__ __volatile__( \
|
|
"cli %0;" \
|
|
: "=d" (__tmp_dummy) \
|
|
); \
|
|
} while (0)
|
|
|
|
#define local_irq_enable() \
|
|
__asm__ __volatile__( \
|
|
"sti %0;" \
|
|
: \
|
|
: "d" (bfin_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); \
|
|
})
|
|
|
|
#define local_irq_save_hw(x) local_irq_save(x)
|
|
#define local_irq_restore_hw(x) local_irq_restore(x)
|
|
#define local_irq_enable_hw() local_irq_enable()
|
|
#define local_irq_disable_hw() local_irq_disable()
|
|
#define irqs_disabled_hw() irqs_disabled()
|
|
|
|
#endif /* !CONFIG_IPIPE */
|
|
|
|
#if ANOMALY_05000244 && defined(CONFIG_BFIN_ICACHE)
|
|
# define NOP_PAD_ANOMALY_05000244 "nop; nop;"
|
|
#else
|
|
# define NOP_PAD_ANOMALY_05000244
|
|
#endif
|
|
|
|
#define idle_with_irq_disabled() \
|
|
__asm__ __volatile__( \
|
|
NOP_PAD_ANOMALY_05000244 \
|
|
".align 8;" \
|
|
"sti %0;" \
|
|
"idle;" \
|
|
: \
|
|
: "d" (bfin_irq_flags) \
|
|
)
|
|
|
|
static inline int irq_canonicalize(int irq)
|
|
{
|
|
return irq;
|
|
}
|
|
|
|
#endif /* _BFIN_IRQ_H_ */
|