/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu> */ #ifndef _ASM_POWERPC_HW_IRQ_H #define _ASM_POWERPC_HW_IRQ_H #ifdef __KERNEL__ #include <linux/errno.h> #include <linux/compiler.h> #include <asm/ptrace.h> #include <asm/processor.h> #ifdef CONFIG_PPC64 /* * PACA flags in paca->irq_happened. * * This bits are set when interrupts occur while soft-disabled * and allow a proper replay. Additionally, PACA_IRQ_HARD_DIS * is set whenever we manually hard disable. */ #define PACA_IRQ_HARD_DIS 0x01 #define PACA_IRQ_DBELL 0x02 #define PACA_IRQ_EE 0x04 #define PACA_IRQ_DEC 0x08 /* Or FIT */ #define PACA_IRQ_EE_EDGE 0x10 /* BookE only */ #define PACA_IRQ_HMI 0x20 /* * flags for paca->irq_soft_mask */ #define IRQS_ENABLED 0 #define IRQS_DISABLED 1 /* local_irq_disable() interrupts */ #define IRQS_PMI_DISABLED 2 #define IRQS_ALL_DISABLED (IRQS_DISABLED | IRQS_PMI_DISABLED) #endif /* CONFIG_PPC64 */ #ifndef __ASSEMBLY__ extern void replay_system_reset(void); extern void __replay_interrupt(unsigned int vector); extern void timer_interrupt(struct pt_regs *); extern void performance_monitor_exception(struct pt_regs *regs); extern void WatchdogException(struct pt_regs *regs); extern void unknown_exception(struct pt_regs *regs); #ifdef CONFIG_PPC64 #include <asm/paca.h> static inline unsigned long arch_local_save_flags(void) { unsigned long flags; asm volatile( "lbz %0,%1(13)" : "=r" (flags) : "i" (offsetof(struct paca_struct, soft_enabled))); return flags; } static inline unsigned long arch_local_irq_disable(void) { unsigned long flags, zero; asm volatile( "li %1,0; lbz %0,%2(13); stb %1,%2(13)" : "=r" (flags), "=&r" (zero) : "i" (offsetof(struct paca_struct, soft_enabled)) : "memory"); return flags; } extern void arch_local_irq_restore(unsigned long); static inline void arch_local_irq_enable(void) { arch_local_irq_restore(1); } static inline unsigned long arch_local_irq_save(void) { return arch_local_irq_disable(); } static inline bool arch_irqs_disabled_flags(unsigned long flags) { return flags == 0; } static inline bool arch_irqs_disabled(void) { return arch_irqs_disabled_flags(arch_local_save_flags()); } #ifdef CONFIG_PPC_BOOK3E #define __hard_irq_enable() asm volatile("wrteei 1" : : : "memory") #define __hard_irq_disable() asm volatile("wrteei 0" : : : "memory") #else #define __hard_irq_enable() __mtmsrd(local_paca->kernel_msr | MSR_EE, 1) #define __hard_irq_disable() __mtmsrd(local_paca->kernel_msr, 1) #endif #define hard_irq_disable() do { \ u8 _was_enabled; \ __hard_irq_disable(); \ _was_enabled = local_paca->soft_enabled; \ local_paca->soft_enabled = 0; \ local_paca->irq_happened |= PACA_IRQ_HARD_DIS; \ if (_was_enabled) \ trace_hardirqs_off(); \ } while(0) static inline bool lazy_irq_pending(void) { return !!(get_paca()->irq_happened & ~PACA_IRQ_HARD_DIS); } /* * This is called by asynchronous interrupts to conditionally * re-enable hard interrupts when soft-disabled after having * cleared the source of the interrupt */ static inline void may_hard_irq_enable(void) { get_paca()->irq_happened &= ~PACA_IRQ_HARD_DIS; if (!(get_paca()->irq_happened & PACA_IRQ_EE)) __hard_irq_enable(); } static inline bool arch_irq_disabled_regs(struct pt_regs *regs) { return !regs->softe; } extern bool prep_irq_for_idle(void); extern bool prep_irq_for_idle_irqsoff(void); extern void irq_set_pending_from_srr1(unsigned long srr1); #define fini_irq_for_idle_irqsoff() trace_hardirqs_off(); extern void force_external_irq_replay(void); #else /* CONFIG_PPC64 */ #define SET_MSR_EE(x) mtmsr(x) static inline unsigned long arch_local_save_flags(void) { return mfmsr(); } static inline void arch_local_irq_restore(unsigned long flags) { #if defined(CONFIG_BOOKE) asm volatile("wrtee %0" : : "r" (flags) : "memory"); #else mtmsr(flags); #endif } static inline unsigned long arch_local_irq_save(void) { unsigned long flags = arch_local_save_flags(); #ifdef CONFIG_BOOKE asm volatile("wrteei 0" : : : "memory"); #elif defined(CONFIG_PPC_8xx) wrtspr(SPRN_EID); #else SET_MSR_EE(flags & ~MSR_EE); #endif return flags; } static inline void arch_local_irq_disable(void) { #ifdef CONFIG_BOOKE asm volatile("wrteei 0" : : : "memory"); #elif defined(CONFIG_PPC_8xx) wrtspr(SPRN_EID); #else arch_local_irq_save(); #endif } static inline void arch_local_irq_enable(void) { #ifdef CONFIG_BOOKE asm volatile("wrteei 1" : : : "memory"); #elif defined(CONFIG_PPC_8xx) wrtspr(SPRN_EIE); #else unsigned long msr = mfmsr(); SET_MSR_EE(msr | MSR_EE); #endif } static inline bool arch_irqs_disabled_flags(unsigned long flags) { return (flags & MSR_EE) == 0; } static inline bool arch_irqs_disabled(void) { return arch_irqs_disabled_flags(arch_local_save_flags()); } #define hard_irq_disable() arch_local_irq_disable() static inline bool arch_irq_disabled_regs(struct pt_regs *regs) { return !(regs->msr & MSR_EE); } static inline void may_hard_irq_enable(void) { } #endif /* CONFIG_PPC64 */ #define ARCH_IRQ_INIT_FLAGS IRQ_NOREQUEST /* * interrupt-retrigger: should we handle this via lost interrupts and IPIs * or should we not care like we do now ? --BenH. */ struct irq_chip; #endif /* __ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_HW_IRQ_H */
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irq.h | File | 1.83 KB | 0644 |
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kvm_book3s.h | File | 12.06 KB | 0644 |
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kvm_book3s_32.h | File | 1.39 KB | 0644 |
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kvm_book3s_64.h | File | 12.62 KB | 0644 |
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kvm_book3s_asm.h | File | 4.4 KB | 0644 |
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kvm_booke.h | File | 2.68 KB | 0644 |
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kvm_booke_hv_asm.h | File | 2.03 KB | 0644 |
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kvm_fpu.h | File | 2.74 KB | 0644 |
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kvm_host.h | File | 19.92 KB | 0644 |
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kvm_para.h | File | 1.49 KB | 0644 |
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kvm_ppc.h | File | 34.83 KB | 0644 |
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libata-portmap.h | File | 249 B | 0644 |
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linkage.h | File | 501 B | 0644 |
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livepatch.h | File | 1.65 KB | 0644 |
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local.h | File | 3.79 KB | 0644 |
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lppaca.h | File | 5.02 KB | 0644 |
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lv1call.h | File | 18.74 KB | 0644 |
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machdep.h | File | 9.7 KB | 0644 |
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macio.h | File | 3.89 KB | 0644 |
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mc146818rtc.h | File | 943 B | 0644 |
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mediabay.h | File | 1.34 KB | 0644 |
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mm-arch-hooks.h | File | 839 B | 0644 |
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mman.h | File | 1.33 KB | 0644 |
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mmu-40x.h | File | 1.94 KB | 0644 |
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mmu-44x.h | File | 5.56 KB | 0644 |
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mmu-8xx.h | File | 8.6 KB | 0644 |
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mmu-book3e.h | File | 9.47 KB | 0644 |
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mmu.h | File | 9.2 KB | 0644 |
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mmu_context.h | File | 6.26 KB | 0644 |
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opal-api.h | File | 29.34 KB | 0644 |
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opal.h | File | 16.53 KB | 0644 |
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oprofile_impl.h | File | 3 KB | 0644 |
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page.h | File | 10.65 KB | 0644 |
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pasemi_dma.h | File | 23.32 KB | 0644 |
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pci-bridge.h | File | 9.21 KB | 0644 |
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pci.h | File | 4.58 KB | 0644 |
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percpu.h | File | 468 B | 0644 |
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perf_event.h | File | 1.23 KB | 0644 |
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pgalloc.h | File | 620 B | 0644 |
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pnv-ocxl.h | File | 1.4 KB | 0644 |
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ppc-opcode.h | File | 19.05 KB | 0644 |
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ppc_asm.h | File | 21.63 KB | 0644 |
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probes.h | File | 2.11 KB | 0644 |
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processor.h | File | 15 KB | 0644 |
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prom.h | File | 7.17 KB | 0644 |
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ps3.h | File | 15.44 KB | 0644 |
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ps3gpu.h | File | 2.44 KB | 0644 |
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pte-common.h | File | 6.27 KB | 0644 |
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pte-walk.h | File | 1.11 KB | 0644 |
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ptrace.h | File | 7.14 KB | 0644 |
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reg.h | File | 61.61 KB | 0644 |
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reg_8xx.h | File | 4.96 KB | 0644 |
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reg_a2.h | File | 6.16 KB | 0644 |
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reg_fsl_emb.h | File | 3.65 KB | 0644 |
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rheap.h | File | 2.43 KB | 0644 |
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runlatch.h | File | 1.16 KB | 0644 |
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sections.h | File | 1.9 KB | 0644 |
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security_features.h | File | 3.03 KB | 0644 |
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serial.h | File | 677 B | 0644 |
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setjmp.h | File | 630 B | 0644 |
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setup.h | File | 2.44 KB | 0644 |
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sfp-machine.h | File | 12.38 KB | 0644 |
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shmparam.h | File | 206 B | 0644 |
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signal.h | File | 225 B | 0644 |
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slice.h | File | 1.12 KB | 0644 |
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smp.h | File | 6.13 KB | 0644 |
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smu.h | File | 19.33 KB | 0644 |
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sparsemem.h | File | 1.1 KB | 0644 |
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spinlock.h | File | 7.04 KB | 0644 |
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spinlock_types.h | File | 424 B | 0644 |
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spu_csa.h | File | 6.64 KB | 0644 |
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spu_info.h | File | 908 B | 0644 |
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syscall.h | File | 2.8 KB | 0644 |
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topology.h | File | 2.92 KB | 0644 |
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trace.h | File | 4.17 KB | 0644 |
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trace_clock.h | File | 517 B | 0644 |
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tsi108.h | File | 3.39 KB | 0644 |
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tsi108_irq.h | File | 4.48 KB | 0644 |
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tsi108_pci.h | File | 1.82 KB | 0644 |
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types.h | File | 1 KB | 0644 |
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uaccess.h | File | 13.21 KB | 0644 |
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udbg.h | File | 2.16 KB | 0644 |
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unistd.h | File | 1.52 KB | 0644 |
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uprobes.h | File | 1.41 KB | 0644 |
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user.h | File | 2.14 KB | 0644 |
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vas.h | File | 4.61 KB | 0644 |
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vdso.h | File | 1.53 KB | 0644 |
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vdso_datapage.h | File | 4.4 KB | 0644 |
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vga.h | File | 1.24 KB | 0644 |
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word-at-a-time.h | File | 4.75 KB | 0644 |
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xics.h | File | 4.31 KB | 0644 |
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xilinx_intc.h | File | 598 B | 0644 |
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xive-regs.h | File | 3.73 KB | 0644 |
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