diff options
Diffstat (limited to 'arch/blackfin/include/asm/irqflags.h')
-rw-r--r-- | arch/blackfin/include/asm/irqflags.h | 289 |
1 files changed, 0 insertions, 289 deletions
diff --git a/arch/blackfin/include/asm/irqflags.h b/arch/blackfin/include/asm/irqflags.h deleted file mode 100644 index 07aff230a812..000000000000 --- a/arch/blackfin/include/asm/irqflags.h +++ /dev/null @@ -1,289 +0,0 @@ -/* - * interface to Blackfin CEC - * - * Copyright 2009 Analog Devices Inc. - * Licensed under the GPL-2 or later. - */ - -#ifndef __ASM_BFIN_IRQFLAGS_H__ -#define __ASM_BFIN_IRQFLAGS_H__ - -#include <mach/blackfin.h> - -#ifdef CONFIG_SMP -# include <asm/pda.h> -# include <asm/processor.h> -# define bfin_irq_flags cpu_pda[blackfin_core_id()].imask -#else -extern unsigned long bfin_irq_flags; -#endif - -static inline notrace void bfin_sti(unsigned long flags) -{ - asm volatile("sti %0;" : : "d" (flags)); -} - -static inline notrace unsigned long bfin_cli(void) -{ - unsigned long flags; - asm volatile("cli %0;" : "=d" (flags)); - return flags; -} - -#ifdef CONFIG_DEBUG_HWERR -# define bfin_no_irqs 0x3f -#else -# define bfin_no_irqs 0x1f -#endif - -/*****************************************************************************/ -/* - * Hard, untraced CPU interrupt flag manipulation and access. - */ -static inline notrace void __hard_local_irq_disable(void) -{ - bfin_cli(); -} - -static inline notrace void __hard_local_irq_enable(void) -{ - bfin_sti(bfin_irq_flags); -} - -static inline notrace unsigned long hard_local_save_flags(void) -{ - return bfin_read_IMASK(); -} - -static inline notrace unsigned long __hard_local_irq_save(void) -{ - unsigned long flags; - flags = bfin_cli(); -#ifdef CONFIG_DEBUG_HWERR - bfin_sti(0x3f); -#endif - return flags; -} - -static inline notrace int hard_irqs_disabled_flags(unsigned long flags) -{ -#ifdef CONFIG_BF60x - return (flags & IMASK_IVG11) == 0; -#else - return (flags & ~0x3f) == 0; -#endif -} - -static inline notrace int hard_irqs_disabled(void) -{ - unsigned long flags = hard_local_save_flags(); - return hard_irqs_disabled_flags(flags); -} - -static inline notrace void __hard_local_irq_restore(unsigned long flags) -{ - if (!hard_irqs_disabled_flags(flags)) - __hard_local_irq_enable(); -} - -/*****************************************************************************/ -/* - * Interrupt pipe handling. - */ -#ifdef CONFIG_IPIPE - -#include <linux/compiler.h> -#include <linux/ipipe_trace.h> -/* - * Way too many inter-deps between low-level headers in this port, so - * we redeclare the required bits we cannot pick from - * <asm/ipipe_base.h> to prevent circular dependencies. - */ -void __ipipe_stall_root(void); -void __ipipe_unstall_root(void); -unsigned long __ipipe_test_root(void); -unsigned long __ipipe_test_and_stall_root(void); -void __ipipe_restore_root(unsigned long flags); - -#ifdef CONFIG_IPIPE_DEBUG_CONTEXT -struct ipipe_domain; -extern struct ipipe_domain ipipe_root; -void ipipe_check_context(struct ipipe_domain *ipd); -#define __check_irqop_context(ipd) ipipe_check_context(&ipipe_root) -#else /* !CONFIG_IPIPE_DEBUG_CONTEXT */ -#define __check_irqop_context(ipd) do { } while (0) -#endif /* !CONFIG_IPIPE_DEBUG_CONTEXT */ - -/* - * Interrupt pipe interface to linux/irqflags.h. - */ -static inline notrace void arch_local_irq_disable(void) -{ - __check_irqop_context(); - __ipipe_stall_root(); - barrier(); -} - -static inline notrace void arch_local_irq_enable(void) -{ - barrier(); - __check_irqop_context(); - __ipipe_unstall_root(); -} - -static inline notrace unsigned long arch_local_save_flags(void) -{ - return __ipipe_test_root() ? bfin_no_irqs : bfin_irq_flags; -} - -static inline notrace int arch_irqs_disabled_flags(unsigned long flags) -{ - return flags == bfin_no_irqs; -} - -static inline notrace unsigned long arch_local_irq_save(void) -{ - unsigned long flags; - - __check_irqop_context(); - flags = __ipipe_test_and_stall_root() ? bfin_no_irqs : bfin_irq_flags; - barrier(); - - return flags; -} - -static inline notrace void arch_local_irq_restore(unsigned long flags) -{ - __check_irqop_context(); - __ipipe_restore_root(flags == bfin_no_irqs); -} - -static inline notrace unsigned long arch_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 notrace int arch_demangle_irq_bits(unsigned long *x) -{ - int virt = (*x & (1 << 31)) != 0; - *x &= ~(1L << 31); - return virt; -} - -/* - * Interface to various arch routines that may be traced. - */ -#ifdef CONFIG_IPIPE_TRACE_IRQSOFF -static inline notrace void hard_local_irq_disable(void) -{ - if (!hard_irqs_disabled()) { - __hard_local_irq_disable(); - ipipe_trace_begin(0x80000000); - } -} - -static inline notrace void hard_local_irq_enable(void) -{ - if (hard_irqs_disabled()) { - ipipe_trace_end(0x80000000); - __hard_local_irq_enable(); - } -} - -static inline notrace unsigned long hard_local_irq_save(void) -{ - unsigned long flags = hard_local_save_flags(); - if (!hard_irqs_disabled_flags(flags)) { - __hard_local_irq_disable(); - ipipe_trace_begin(0x80000001); - } - return flags; -} - -static inline notrace void hard_local_irq_restore(unsigned long flags) -{ - if (!hard_irqs_disabled_flags(flags)) { - ipipe_trace_end(0x80000001); - __hard_local_irq_enable(); - } -} - -#else /* !CONFIG_IPIPE_TRACE_IRQSOFF */ -# define hard_local_irq_disable() __hard_local_irq_disable() -# define hard_local_irq_enable() __hard_local_irq_enable() -# define hard_local_irq_save() __hard_local_irq_save() -# define hard_local_irq_restore(flags) __hard_local_irq_restore(flags) -#endif /* !CONFIG_IPIPE_TRACE_IRQSOFF */ - -#define hard_local_irq_save_cond() hard_local_irq_save() -#define hard_local_irq_restore_cond(flags) hard_local_irq_restore(flags) - -#else /* !CONFIG_IPIPE */ - -/* - * Direct interface to linux/irqflags.h. - */ -#define arch_local_save_flags() hard_local_save_flags() -#define arch_local_irq_save() __hard_local_irq_save() -#define arch_local_irq_restore(flags) __hard_local_irq_restore(flags) -#define arch_local_irq_enable() __hard_local_irq_enable() -#define arch_local_irq_disable() __hard_local_irq_disable() -#define arch_irqs_disabled_flags(flags) hard_irqs_disabled_flags(flags) -#define arch_irqs_disabled() hard_irqs_disabled() - -/* - * Interface to various arch routines that may be traced. - */ -#define hard_local_irq_save() __hard_local_irq_save() -#define hard_local_irq_restore(flags) __hard_local_irq_restore(flags) -#define hard_local_irq_enable() __hard_local_irq_enable() -#define hard_local_irq_disable() __hard_local_irq_disable() -#define hard_local_irq_save_cond() hard_local_save_flags() -#define hard_local_irq_restore_cond(flags) do { (void)(flags); } while (0) - -#endif /* !CONFIG_IPIPE */ - -#ifdef CONFIG_SMP -#define hard_local_irq_save_smp() hard_local_irq_save() -#define hard_local_irq_restore_smp(flags) hard_local_irq_restore(flags) -#else -#define hard_local_irq_save_smp() hard_local_save_flags() -#define hard_local_irq_restore_smp(flags) do { (void)(flags); } while (0) -#endif - -/* - * Remap the arch-neutral IRQ state manipulation macros to the - * blackfin-specific hard_local_irq_* API. - */ -#define local_irq_save_hw(flags) \ - do { \ - (flags) = hard_local_irq_save(); \ - } while (0) -#define local_irq_restore_hw(flags) \ - do { \ - hard_local_irq_restore(flags); \ - } while (0) -#define local_irq_disable_hw() \ - do { \ - hard_local_irq_disable(); \ - } while (0) -#define local_irq_enable_hw() \ - do { \ - hard_local_irq_enable(); \ - } while (0) -#define local_irq_save_hw_notrace(flags) \ - do { \ - (flags) = __hard_local_irq_save(); \ - } while (0) -#define local_irq_restore_hw_notrace(flags) \ - do { \ - __hard_local_irq_restore(flags); \ - } while (0) - -#define irqs_disabled_hw() hard_irqs_disabled() - -#endif |