/* * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef __ASM_IRQFLAGS_ARCV2_H #define __ASM_IRQFLAGS_ARCV2_H #include <asm/arcregs.h> /* status32 Bits */ #define STATUS_AD_BIT 19 /* Disable Align chk: core supports non-aligned */ #define STATUS_IE_BIT 31 #define STATUS_AD_MASK (1<<STATUS_AD_BIT) #define STATUS_IE_MASK (1<<STATUS_IE_BIT) /* status32 Bits as encoded/expected by CLRI/SETI */ #define CLRI_STATUS_IE_BIT 4 #define CLRI_STATUS_E_MASK 0xF #define CLRI_STATUS_IE_MASK (1 << CLRI_STATUS_IE_BIT) #define AUX_USER_SP 0x00D #define AUX_IRQ_CTRL 0x00E #define AUX_IRQ_ACT 0x043 /* Active Intr across all levels */ #define AUX_IRQ_LVL_PEND 0x200 /* Pending Intr across all levels */ #define AUX_IRQ_HINT 0x201 /* For generating Soft Interrupts */ #define AUX_IRQ_PRIORITY 0x206 #define ICAUSE 0x40a #define AUX_IRQ_SELECT 0x40b #define AUX_IRQ_ENABLE 0x40c /* Was Intr taken in User Mode */ #define AUX_IRQ_ACT_BIT_U 31 /* * Hardware supports 16 priorities (0 highest, 15 lowest) * Linux by default runs at 1, priority 0 reserved for NMI style interrupts */ #define ARCV2_IRQ_DEF_PRIO 1 /* seed value for status register */ #define ISA_INIT_STATUS_BITS (STATUS_IE_MASK | STATUS_AD_MASK | \ (ARCV2_IRQ_DEF_PRIO << 1)) #ifndef __ASSEMBLY__ /* * Save IRQ state and disable IRQs */ static inline long arch_local_irq_save(void) { unsigned long flags; __asm__ __volatile__(" clri %0 \n" : "=r" (flags) : : "memory"); return flags; } /* * restore saved IRQ state */ static inline void arch_local_irq_restore(unsigned long flags) { __asm__ __volatile__(" seti %0 \n" : : "r" (flags) : "memory"); } /* * Unconditionally Enable IRQs */ static inline void arch_local_irq_enable(void) { unsigned int irqact = read_aux_reg(AUX_IRQ_ACT); if (irqact & 0xffff) write_aux_reg(AUX_IRQ_ACT, irqact & ~0xffff); __asm__ __volatile__(" seti \n" : : : "memory"); } /* * Unconditionally Disable IRQs */ static inline void arch_local_irq_disable(void) { __asm__ __volatile__(" clri \n" : : : "memory"); } /* * save IRQ state */ static inline long arch_local_save_flags(void) { unsigned long temp; __asm__ __volatile__( " lr %0, [status32] \n" : "=&r"(temp) : : "memory"); /* To be compatible with irq_save()/irq_restore() * encode the irq bits as expected by CLRI/SETI * (this was needed to make CONFIG_TRACE_IRQFLAGS work) */ temp = (1 << 5) | ((!!(temp & STATUS_IE_MASK)) << CLRI_STATUS_IE_BIT) | ((temp >> 1) & CLRI_STATUS_E_MASK); return temp; } /* * Query IRQ state */ static inline int arch_irqs_disabled_flags(unsigned long flags) { return !(flags & CLRI_STATUS_IE_MASK); } static inline int arch_irqs_disabled(void) { return arch_irqs_disabled_flags(arch_local_save_flags()); } static inline void arc_softirq_trigger(int irq) { write_aux_reg(AUX_IRQ_HINT, irq); } static inline void arc_softirq_clear(int irq) { write_aux_reg(AUX_IRQ_HINT, 0); } #else #ifdef CONFIG_TRACE_IRQFLAGS .macro TRACE_ASM_IRQ_DISABLE bl trace_hardirqs_off .endm .macro TRACE_ASM_IRQ_ENABLE bl trace_hardirqs_on .endm #else .macro TRACE_ASM_IRQ_DISABLE .endm .macro TRACE_ASM_IRQ_ENABLE .endm #endif .macro IRQ_DISABLE scratch clri TRACE_ASM_IRQ_DISABLE .endm .macro IRQ_ENABLE scratch TRACE_ASM_IRQ_ENABLE seti .endm #endif /* __ASSEMBLY__ */ #endif
Name | Type | Size | Permission | Actions |
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Kbuild | File | 681 B | 0644 |
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arcregs.h | File | 8.59 KB | 0644 |
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asm-offsets.h | File | 311 B | 0644 |
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atomic.h | File | 15.14 KB | 0644 |
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barrier.h | File | 1.75 KB | 0644 |
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bitops.h | File | 9.81 KB | 0644 |
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bug.h | File | 938 B | 0644 |
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cache.h | File | 3.77 KB | 0644 |
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cacheflush.h | File | 3.88 KB | 0644 |
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checksum.h | File | 2.45 KB | 0644 |
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cmpxchg.h | File | 5.4 KB | 0644 |
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current.h | File | 695 B | 0644 |
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delay.h | File | 1.99 KB | 0644 |
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disasm.h | File | 3.87 KB | 0644 |
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dma-mapping.h | File | 734 B | 0644 |
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dma.h | File | 459 B | 0644 |
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dwarf.h | File | 892 B | 0644 |
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elf.h | File | 2.15 KB | 0644 |
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entry-arcv2.h | File | 4.85 KB | 0644 |
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entry-compact.h | File | 9.29 KB | 0644 |
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entry.h | File | 6.73 KB | 0644 |
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exec.h | File | 410 B | 0644 |
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fb.h | File | 411 B | 0644 |
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futex.h | File | 3.67 KB | 0644 |
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highmem.h | File | 1.46 KB | 0644 |
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hugepage.h | File | 2.41 KB | 0644 |
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io.h | File | 6.43 KB | 0644 |
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irq.h | File | 825 B | 0644 |
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irqflags-arcv2.h | File | 3.45 KB | 0644 |
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irqflags-compact.h | File | 4.25 KB | 0644 |
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irqflags.h | File | 509 B | 0644 |
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kdebug.h | File | 400 B | 0644 |
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kgdb.h | File | 1.35 KB | 0644 |
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kmap_types.h | File | 489 B | 0644 |
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kprobes.h | File | 1.37 KB | 0644 |
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linkage.h | File | 1.42 KB | 0644 |
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mach_desc.h | File | 2.06 KB | 0644 |
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mmu.h | File | 2.44 KB | 0644 |
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mmu_context.h | File | 5.67 KB | 0644 |
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mmzone.h | File | 989 B | 0644 |
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module.h | File | 661 B | 0644 |
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page.h | File | 2.99 KB | 0644 |
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pci.h | File | 705 B | 0644 |
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perf_event.h | File | 6.86 KB | 0644 |
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pgalloc.h | File | 3.79 KB | 0644 |
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pgtable.h | File | 14.2 KB | 0644 |
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processor.h | File | 4.69 KB | 0644 |
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ptrace.h | File | 3.87 KB | 0644 |
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sections.h | File | 407 B | 0644 |
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segment.h | File | 612 B | 0644 |
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serial.h | File | 644 B | 0644 |
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setup.h | File | 1.18 KB | 0644 |
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shmparam.h | File | 442 B | 0644 |
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smp.h | File | 4.25 KB | 0644 |
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spinlock.h | File | 8.79 KB | 0644 |
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spinlock_types.h | File | 1.03 KB | 0644 |
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stacktrace.h | File | 1.29 KB | 0644 |
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string.h | File | 1.15 KB | 0644 |
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switch_to.h | File | 1.17 KB | 0644 |
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syscall.h | File | 1.57 KB | 0644 |
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syscalls.h | File | 653 B | 0644 |
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thread_info.h | File | 3.39 KB | 0644 |
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timex.h | File | 508 B | 0644 |
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tlb-mmu1.h | File | 3.48 KB | 0644 |
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tlb.h | File | 1.23 KB | 0644 |
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tlbflush.h | File | 1.76 KB | 0644 |
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uaccess.h | File | 18.45 KB | 0644 |
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unaligned.h | File | 771 B | 0644 |
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unwind.h | File | 3.51 KB | 0644 |
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