/* * 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
Name | Type | Size | Permission | Actions |
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Kbuild | File | 658 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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atomic.h | File | 1.55 KB | 0644 |
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barrier.h | File | 2.55 KB | 0644 |
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bfin-global.h | File | 2.8 KB | 0644 |
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bfin-lq035q1.h | File | 868 B | 0644 |
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bfin5xx_spi.h | File | 2.07 KB | 0644 |
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bfin_can.h | File | 36.04 KB | 0644 |
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bfin_dma.h | File | 5.46 KB | 0644 |
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bfin_pfmon.h | File | 1.11 KB | 0644 |
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bfin_ppi.h | File | 9.01 KB | 0644 |
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bfin_sdh.h | File | 7.2 KB | 0644 |
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bfin_serial.h | File | 17.02 KB | 0644 |
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bfin_simple_timer.h | File | 949 B | 0644 |
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bfin_sport.h | File | 1.21 KB | 0644 |
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bfin_sport3.h | File | 5.47 KB | 0644 |
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bfin_twi.h | File | 6.25 KB | 0644 |
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bfin_watchdog.h | File | 696 B | 0644 |
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bfrom.h | File | 3.36 KB | 0644 |
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bitops.h | File | 3.45 KB | 0644 |
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blackfin.h | File | 1.55 KB | 0644 |
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bug.h | File | 1.49 KB | 0644 |
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cache.h | File | 1.47 KB | 0644 |
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cacheflush.h | File | 3.79 KB | 0644 |
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cdef_LPBlackfin.h | File | 18.93 KB | 0644 |
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checksum.h | File | 899 B | 0644 |
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clkdev.h | File | 318 B | 0644 |
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clocks.h | File | 1.66 KB | 0644 |
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cmpxchg.h | File | 3.2 KB | 0644 |
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context.S | File | 5.92 KB | 0644 |
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cplb.h | File | 4.86 KB | 0644 |
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cplbinit.h | File | 1.6 KB | 0644 |
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cpu.h | File | 443 B | 0644 |
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def_LPBlackfin.h | File | 28.6 KB | 0644 |
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delay.h | File | 917 B | 0644 |
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dma-mapping.h | File | 1.09 KB | 0644 |
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dma.h | File | 9.28 KB | 0644 |
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dpmc.h | File | 18.24 KB | 0644 |
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early_printk.h | File | 1.09 KB | 0644 |
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elf.h | File | 4.88 KB | 0644 |
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entry.h | File | 5.27 KB | 0644 |
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exec.h | File | 37 B | 0644 |
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fixed_code.h | File | 806 B | 0644 |
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flat.h | File | 1.41 KB | 0644 |
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ftrace.h | File | 1.37 KB | 0644 |
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gpio.h | File | 5.91 KB | 0644 |
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gptimers.h | File | 8.95 KB | 0644 |
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hardirq.h | File | 301 B | 0644 |
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io.h | File | 1.52 KB | 0644 |
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ipipe.h | File | 5.81 KB | 0644 |
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ipipe_base.h | File | 2.38 KB | 0644 |
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irq.h | File | 879 B | 0644 |
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irq_handler.h | File | 1.93 KB | 0644 |
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irqflags.h | File | 7.13 KB | 0644 |
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kgdb.h | File | 3.23 KB | 0644 |
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l1layout.h | File | 879 B | 0644 |
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linkage.h | File | 205 B | 0644 |
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mem_init.h | File | 13.1 KB | 0644 |
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mem_map.h | File | 1.73 KB | 0644 |
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mmu.h | File | 713 B | 0644 |
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mmu_context.h | File | 5.35 KB | 0644 |
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module.h | File | 410 B | 0644 |
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nand.h | File | 895 B | 0644 |
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nmi.h | File | 195 B | 0644 |
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page.h | File | 546 B | 0644 |
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page_offset.h | File | 192 B | 0644 |
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pci.h | File | 310 B | 0644 |
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pda.h | File | 1.86 KB | 0644 |
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perf_event.h | File | 23 B | 0644 |
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pgtable.h | File | 3 KB | 0644 |
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pm.h | File | 590 B | 0644 |
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portmux.h | File | 16.38 KB | 0644 |
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processor.h | File | 3.21 KB | 0644 |
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pseudo_instructions.h | File | 391 B | 0644 |
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ptrace.h | File | 1.19 KB | 0644 |
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reboot.h | File | 446 B | 0644 |
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rwlock.h | File | 142 B | 0644 |
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scb.h | File | 445 B | 0644 |
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sections.h | File | 2 KB | 0644 |
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segment.h | File | 226 B | 0644 |
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smp.h | File | 1.34 KB | 0644 |
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spinlock.h | File | 1.87 KB | 0644 |
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spinlock_types.h | File | 495 B | 0644 |
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string.h | File | 1.04 KB | 0644 |
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switch_to.h | File | 997 B | 0644 |
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syscall.h | File | 2.15 KB | 0644 |
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thread_info.h | File | 2.66 KB | 0644 |
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time.h | File | 1.33 KB | 0644 |
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timex.h | File | 477 B | 0644 |
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tlb.h | File | 481 B | 0644 |
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tlbflush.h | File | 88 B | 0644 |
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trace.h | File | 2.67 KB | 0644 |
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traps.h | File | 4.87 KB | 0644 |
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uaccess.h | File | 5.79 KB | 0644 |
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unistd.h | File | 523 B | 0644 |
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vga.h | File | 29 B | 0644 |
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