projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu> | |
| 3 | * | |
| 4 | * Use inline IRQs where possible - Anton Blanchard <anton@au.ibm.com> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public License | |
| 8 | * as published by the Free Software Foundation; either version | |
| 9 | * 2 of the License, or (at your option) any later version. | |
| 10 | */ | |
| 11 | #ifdef __KERNEL__ | |
| 12 | #ifndef _PPC64_HW_IRQ_H | |
| 13 | #define _PPC64_HW_IRQ_H | |
| 14 | ||
| 15 | #include <linux/config.h> | |
| 16 | #include <linux/errno.h> | |
| 17 | #include <asm/irq.h> | |
| 18 | ||
| 19 | int timer_interrupt(struct pt_regs *); | |
| 20 | extern void ppc_irq_dispatch_handler(struct pt_regs *regs, int irq); | |
| 21 | ||
| 22 | #ifdef CONFIG_PPC_ISERIES | |
| 23 | ||
| 24 | extern unsigned long local_get_flags(void); | |
| 25 | extern unsigned long local_irq_disable(void); | |
| 26 | extern void local_irq_restore(unsigned long); | |
| 27 | ||
| 28 | #define local_irq_enable() local_irq_restore(1) | |
| 29 | #define local_save_flags(flags) ((flags) = local_get_flags()) | |
| 30 | #define local_irq_save(flags) ((flags) = local_irq_disable()) | |
| 31 | ||
| 32 | #define irqs_disabled() (local_get_flags() == 0) | |
| 33 | ||
| 34 | #else | |
| 35 | ||
| 36 | #define local_save_flags(flags) ((flags) = mfmsr()) | |
| 37 | #define local_irq_restore(flags) do { \ | |
| 38 | __asm__ __volatile__("": : :"memory"); \ | |
| 39 | __mtmsrd((flags), 1); \ | |
| 40 | } while(0) | |
| 41 | ||
| 42 | static inline void local_irq_disable(void) | |
| 43 | { | |
| 44 | unsigned long msr; | |
| 45 | msr = mfmsr(); | |
| 46 | __mtmsrd(msr & ~MSR_EE, 1); | |
| 47 | __asm__ __volatile__("": : :"memory"); | |
| 48 | } | |
| 49 | ||
| 50 | static inline void local_irq_enable(void) | |
| 51 | { | |
| 52 | unsigned long msr; | |
| 53 | __asm__ __volatile__("": : :"memory"); | |
| 54 | msr = mfmsr(); | |
| 55 | __mtmsrd(msr | MSR_EE, 1); | |
| 56 | } | |
| 57 | ||
| 58 | static inline void __do_save_and_cli(unsigned long *flags) | |
| 59 | { | |
| 60 | unsigned long msr; | |
| 61 | msr = mfmsr(); | |
| 62 | *flags = msr; | |
| 63 | __mtmsrd(msr & ~MSR_EE, 1); | |
| 64 | __asm__ __volatile__("": : :"memory"); | |
| 65 | } | |
| 66 | ||
| 67 | #define local_irq_save(flags) __do_save_and_cli(&flags) | |
| 68 | ||
| 69 | #define irqs_disabled() \ | |
| 70 | ({ \ | |
| 71 | unsigned long flags; \ | |
| 72 | local_save_flags(flags); \ | |
| 73 | !(flags & MSR_EE); \ | |
| 74 | }) | |
| 75 | ||
| 76 | #endif /* CONFIG_PPC_ISERIES */ | |
| 77 | ||
| 78 | #define mask_irq(irq) \ | |
| 79 | ({ \ | |
| 80 | irq_desc_t *desc = get_irq_desc(irq); \ | |
| 81 | if (desc->handler && desc->handler->disable) \ | |
| 82 | desc->handler->disable(irq); \ | |
| 83 | }) | |
| 84 | #define unmask_irq(irq) \ | |
| 85 | ({ \ | |
| 86 | irq_desc_t *desc = get_irq_desc(irq); \ | |
| 87 | if (desc->handler && desc->handler->enable) \ | |
| 88 | desc->handler->enable(irq); \ | |
| 89 | }) | |
| 90 | #define ack_irq(irq) \ | |
| 91 | ({ \ | |
| 92 | irq_desc_t *desc = get_irq_desc(irq); \ | |
| 93 | if (desc->handler && desc->handler->ack) \ | |
| 94 | desc->handler->ack(irq); \ | |
| 95 | }) | |
| 96 | ||
| 97 | /* Should we handle this via lost interrupts and IPIs or should we don't care like | |
| 98 | * we do now ? --BenH. | |
| 99 | */ | |
| 100 | struct hw_interrupt_type; | |
| 101 | static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {} | |
| 102 | ||
| 103 | #endif /* _PPC64_HW_IRQ_H */ | |
| 104 | #endif /* __KERNEL__ */ |