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author | Kumar Gala <galak@freescale.com> | 2005-09-21 16:52:55 -0500 |
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committer | Paul Mackerras <paulus@samba.org> | 2005-09-22 21:03:34 +1000 |
commit | b671ad2befe37131af380183760862d5cbad858d (patch) | |
tree | c6c27d4adf742f360e5056f435601254f050781d /include/asm-ppc64/hw_irq.h | |
parent | fa2ac7a25f1b11c4a695c9288339d0476ecfaf38 (diff) | |
download | kernel_samsung_smdk4412-b671ad2befe37131af380183760862d5cbad858d.zip kernel_samsung_smdk4412-b671ad2befe37131af380183760862d5cbad858d.tar.gz kernel_samsung_smdk4412-b671ad2befe37131af380183760862d5cbad858d.tar.bz2 |
[PATCH] powerpc: merged hw_irq.h
Merged hw_irq.h between ppc32 & ppc64. Added support to use the Book-E
wrtee[i] instructions that allow modifying MSR[EE] atomically.
Additionally, added get_irq_desc() macros to ppc32 to allow mask_irq(),
unmask_irq(), and ack_irq() to be common between ppc32 & ppc64.
Note: because 64-bit Book-E implementations only have a 32-bit MSR the
macro's for Book-E need to come before the PPC64 macro's to ensure the
right thing happends for 64-bit Book-E processors.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-ppc64/hw_irq.h')
-rw-r--r-- | include/asm-ppc64/hw_irq.h | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/include/asm-ppc64/hw_irq.h b/include/asm-ppc64/hw_irq.h deleted file mode 100644 index c483897..0000000 --- a/include/asm-ppc64/hw_irq.h +++ /dev/null @@ -1,104 +0,0 @@ -/* - * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu> - * - * Use inline IRQs where possible - Anton Blanchard <anton@au.ibm.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ -#ifdef __KERNEL__ -#ifndef _PPC64_HW_IRQ_H -#define _PPC64_HW_IRQ_H - -#include <linux/config.h> -#include <linux/errno.h> -#include <asm/irq.h> - -extern void timer_interrupt(struct pt_regs *); -extern void ppc_irq_dispatch_handler(struct pt_regs *regs, int irq); - -#ifdef CONFIG_PPC_ISERIES - -extern unsigned long local_get_flags(void); -extern unsigned long local_irq_disable(void); -extern void local_irq_restore(unsigned long); - -#define local_irq_enable() local_irq_restore(1) -#define local_save_flags(flags) ((flags) = local_get_flags()) -#define local_irq_save(flags) ((flags) = local_irq_disable()) - -#define irqs_disabled() (local_get_flags() == 0) - -#else - -#define local_save_flags(flags) ((flags) = mfmsr()) -#define local_irq_restore(flags) do { \ - __asm__ __volatile__("": : :"memory"); \ - __mtmsrd((flags), 1); \ -} while(0) - -static inline void local_irq_disable(void) -{ - unsigned long msr; - msr = mfmsr(); - __mtmsrd(msr & ~MSR_EE, 1); - __asm__ __volatile__("": : :"memory"); -} - -static inline void local_irq_enable(void) -{ - unsigned long msr; - __asm__ __volatile__("": : :"memory"); - msr = mfmsr(); - __mtmsrd(msr | MSR_EE, 1); -} - -static inline void __do_save_and_cli(unsigned long *flags) -{ - unsigned long msr; - msr = mfmsr(); - *flags = msr; - __mtmsrd(msr & ~MSR_EE, 1); - __asm__ __volatile__("": : :"memory"); -} - -#define local_irq_save(flags) __do_save_and_cli(&flags) - -#define irqs_disabled() \ -({ \ - unsigned long flags; \ - local_save_flags(flags); \ - !(flags & MSR_EE); \ -}) - -#endif /* CONFIG_PPC_ISERIES */ - -#define mask_irq(irq) \ - ({ \ - irq_desc_t *desc = get_irq_desc(irq); \ - if (desc->handler && desc->handler->disable) \ - desc->handler->disable(irq); \ - }) -#define unmask_irq(irq) \ - ({ \ - irq_desc_t *desc = get_irq_desc(irq); \ - if (desc->handler && desc->handler->enable) \ - desc->handler->enable(irq); \ - }) -#define ack_irq(irq) \ - ({ \ - irq_desc_t *desc = get_irq_desc(irq); \ - if (desc->handler && desc->handler->ack) \ - desc->handler->ack(irq); \ - }) - -/* Should we handle this via lost interrupts and IPIs or should we don't care like - * we do now ? --BenH. - */ -struct hw_interrupt_type; -static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {} - -#endif /* _PPC64_HW_IRQ_H */ -#endif /* __KERNEL__ */ |