1384740dcSRalf Baechle /* 2384740dcSRalf Baechle * This file is subject to the terms and conditions of the GNU General Public 3384740dcSRalf Baechle * License. See the file "COPYING" in the main directory of this archive 4384740dcSRalf Baechle * for more details. 5384740dcSRalf Baechle * 6384740dcSRalf Baechle * Copyright (C) 1994 by Waldorf GMBH, written by Ralf Baechle 7384740dcSRalf Baechle * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02, 03 by Ralf Baechle 8384740dcSRalf Baechle */ 9384740dcSRalf Baechle #ifndef _ASM_IRQ_H 10384740dcSRalf Baechle #define _ASM_IRQ_H 11384740dcSRalf Baechle 12384740dcSRalf Baechle #include <linux/linkage.h> 13631330f5SRalf Baechle #include <linux/smp.h> 14abd2363fSGrant Likely #include <linux/irqdomain.h> 15384740dcSRalf Baechle 16384740dcSRalf Baechle #include <asm/mipsmtregs.h> 17384740dcSRalf Baechle 18384740dcSRalf Baechle #include <irq.h> 19384740dcSRalf Baechle 20384740dcSRalf Baechle #ifdef CONFIG_I8259 21384740dcSRalf Baechle static inline int irq_canonicalize(int irq) 22384740dcSRalf Baechle { 23384740dcSRalf Baechle return ((irq == I8259A_IRQ_BASE + 2) ? I8259A_IRQ_BASE + 9 : irq); 24384740dcSRalf Baechle } 25384740dcSRalf Baechle #else 26384740dcSRalf Baechle #define irq_canonicalize(irq) (irq) /* Sane hardware, sane code ... */ 27384740dcSRalf Baechle #endif 28384740dcSRalf Baechle 29950e97caSSergey Ryazanov asmlinkage void plat_irq_dispatch(void); 30950e97caSSergey Ryazanov 318f99a162SWu Zhangjin extern void do_IRQ(unsigned int irq); 32384740dcSRalf Baechle 33384740dcSRalf Baechle extern void arch_init_irq(void); 34384740dcSRalf Baechle extern void spurious_interrupt(void); 35384740dcSRalf Baechle 36384740dcSRalf Baechle extern int allocate_irqno(void); 37384740dcSRalf Baechle extern void alloc_legacy_irqno(void); 38384740dcSRalf Baechle extern void free_irqno(unsigned int irq); 39384740dcSRalf Baechle 40384740dcSRalf Baechle /* 41384740dcSRalf Baechle * Before R2 the timer and performance counter interrupts were both fixed to 42384740dcSRalf Baechle * IE7. Since R2 their number has to be read from the c0_intctl register. 43384740dcSRalf Baechle */ 44384740dcSRalf Baechle #define CP0_LEGACY_COMPARE_IRQ 7 45c6a4ebb9SRalf Baechle #define CP0_LEGACY_PERFCNT_IRQ 7 46384740dcSRalf Baechle 47384740dcSRalf Baechle extern int cp0_compare_irq; 48010c108dSDavid VomLehn extern int cp0_compare_irq_shift; 49384740dcSRalf Baechle extern int cp0_perfcount_irq; 508f7ff027SJames Hogan extern int cp0_fdc_irq; 518f7ff027SJames Hogan 52*770847baSBjorn Helgaas extern int get_c0_fdc_int(void); 53384740dcSRalf Baechle 54856839b7SEunbong Song void arch_trigger_all_cpu_backtrace(bool); 55856839b7SEunbong Song #define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace 56856839b7SEunbong Song 57384740dcSRalf Baechle #endif /* _ASM_IRQ_H */ 58