| /* |
| * 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_ */ |