diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-powerpc/irq.h (renamed from include/asm-ppc/irq.h) | 158 | ||||
| -rw-r--r-- | include/asm-ppc64/irq.h | 120 |
2 files changed, 117 insertions, 161 deletions
diff --git a/include/asm-ppc/irq.h b/include/asm-powerpc/irq.h index 137ea0cf34d3..980393a16be2 100644 --- a/include/asm-ppc/irq.h +++ b/include/asm-powerpc/irq.h @@ -1,11 +1,23 @@ #ifdef __KERNEL__ -#ifndef _ASM_IRQ_H -#define _ASM_IRQ_H +#ifndef _ASM_POWERPC_IRQ_H +#define _ASM_POWERPC_IRQ_H + +/* + * 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. + */ #include <linux/config.h> -#include <asm/machdep.h> /* ppc_md */ +#include <linux/threads.h> + +#include <asm/types.h> #include <asm/atomic.h> +/* this number is used when no interrupt has been assigned */ +#define NO_IRQ (-1) + /* * These constants are used for passing information about interrupt * signal polarity and level/edge sensing to the low-level PIC chip @@ -30,6 +42,44 @@ #define for_each_irq(i) \ for ((i) = 0; (i) < NR_IRQS; ++(i)) +#ifdef CONFIG_PPC64 + +/* + * Maximum number of interrupt sources that we can handle. + */ +#define NR_IRQS 512 + +/* Interrupt numbers are virtual in case they are sparsely + * distributed by the hardware. + */ +extern unsigned int virt_irq_to_real_map[NR_IRQS]; + +/* Create a mapping for a real_irq if it doesn't already exist. + * Return the virtual irq as a convenience. + */ +int virt_irq_create_mapping(unsigned int real_irq); +void virt_irq_init(void); + +static inline unsigned int virt_irq_to_real(unsigned int virt_irq) +{ + return virt_irq_to_real_map[virt_irq]; +} + +extern unsigned int real_irq_to_virt_slowpath(unsigned int real_irq); + +/* + * List of interrupt controllers. + */ +#define IC_INVALID 0 +#define IC_OPEN_PIC 1 +#define IC_PPC_XIC 2 +#define IC_BPA_IIC 3 +#define IC_ISERIES 4 + +extern u64 ppc64_interrupt_controller; + +#else /* 32-bit */ + #if defined(CONFIG_40x) #include <asm/ibm4xx.h> @@ -72,11 +122,6 @@ #define NR_UIC_IRQS UIC_WIDTH #define NR_IRQS ((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS) #endif -static __inline__ int -irq_canonicalize(int irq) -{ - return (irq); -} #elif defined(CONFIG_44x) #include <asm/ibm44x.h> @@ -84,12 +129,6 @@ irq_canonicalize(int irq) #define NR_UIC_IRQS 32 #define NR_IRQS ((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS) -static __inline__ int -irq_canonicalize(int irq) -{ - return (irq); -} - #elif defined(CONFIG_8xx) /* Now include the board configuration specific associations. @@ -176,20 +215,9 @@ irq_canonicalize(int irq) */ #define mk_int_int_mask(IL) (1 << (7 - (IL/2))) -/* always the same on 8xx -- Cort */ -static __inline__ int irq_canonicalize(int irq) -{ - return irq; -} - #elif defined(CONFIG_83xx) #include <asm/mpc83xx.h> -static __inline__ int irq_canonicalize(int irq) -{ - return irq; -} - #define NR_IRQS (NR_IPIC_INTS) #elif defined(CONFIG_85xx) @@ -313,17 +341,13 @@ static __inline__ int irq_canonicalize(int irq) #define SIU_INT_PC1 ((uint)0x3e+CPM_IRQ_OFFSET) #define SIU_INT_PC0 ((uint)0x3f+CPM_IRQ_OFFSET) -static __inline__ int irq_canonicalize(int irq) -{ - return irq; -} - #else /* CONFIG_40x + CONFIG_8xx */ /* * this is the # irq's for all ppc arch's (pmac/chrp/prep) * so it is the max of them all */ #define NR_IRQS 256 +#define __DO_IRQ_CANON 1 #ifndef CONFIG_8260 @@ -400,25 +424,77 @@ static __inline__ int irq_canonicalize(int irq) #endif /* CONFIG_8260 */ +#endif + +#define NR_MASK_WORDS ((NR_IRQS + 31) / 32) +/* pedantic: these are long because they are used with set_bit --RR */ +extern unsigned long ppc_cached_irq_mask[NR_MASK_WORDS]; +extern unsigned long ppc_lost_interrupts[NR_MASK_WORDS]; +extern atomic_t ppc_n_lost_interrupts; + +#endif + /* - * This gets called from serial.c, which is now used on - * powermacs as well as prep/chrp boxes. - * Prep and chrp both have cascaded 8259 PICs. + * Because many systems have two overlapping names spaces for + * interrupts (ISA and XICS for example), and the ISA interrupts + * have historically not been easy to renumber, we allow ISA + * interrupts to take values 0 - 15, and shift up the remaining + * interrupts by 0x10. */ +#define NUM_ISA_INTERRUPTS 0x10 +extern int __irq_offset_value; + +static inline int irq_offset_up(int irq) +{ + return(irq + __irq_offset_value); +} + +static inline int irq_offset_down(int irq) +{ + return(irq - __irq_offset_value); +} + +static inline int irq_offset_value(void) +{ + return __irq_offset_value; +} + +#ifdef __DO_IRQ_CANON +extern int ppc_do_canonicalize_irqs; +#else +#define ppc_do_canonicalize_irqs 0 +#endif + static __inline__ int irq_canonicalize(int irq) { - if (ppc_md.irq_canonicalize) - return ppc_md.irq_canonicalize(irq); + if (ppc_do_canonicalize_irqs && irq == 2) + irq = 9; return irq; } -#endif +extern int distribute_irqs; -#define NR_MASK_WORDS ((NR_IRQS + 31) / 32) -/* pedantic: these are long because they are used with set_bit --RR */ -extern unsigned long ppc_cached_irq_mask[NR_MASK_WORDS]; -extern unsigned long ppc_lost_interrupts[NR_MASK_WORDS]; -extern atomic_t ppc_n_lost_interrupts; +struct irqaction; +struct pt_regs; + +#ifdef CONFIG_IRQSTACKS +/* + * Per-cpu stacks for handling hard and soft interrupts. + */ +extern struct thread_info *hardirq_ctx[NR_CPUS]; +extern struct thread_info *softirq_ctx[NR_CPUS]; + +extern void irq_ctx_init(void); +extern void call_do_softirq(struct thread_info *tp); +extern int call_handle_IRQ_event(int irq, struct pt_regs *regs, + struct irqaction *action, struct thread_info *tp); + +#define __ARCH_HAS_DO_SOFTIRQ + +#else +#define irq_ctx_init() + +#endif /* CONFIG_IRQSTACKS */ #endif /* _ASM_IRQ_H */ #endif /* __KERNEL__ */ diff --git a/include/asm-ppc64/irq.h b/include/asm-ppc64/irq.h deleted file mode 100644 index 99782afb4cde..000000000000 --- a/include/asm-ppc64/irq.h +++ /dev/null @@ -1,120 +0,0 @@ -#ifdef __KERNEL__ -#ifndef _ASM_IRQ_H -#define _ASM_IRQ_H - -/* - * 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. - */ - -#include <linux/config.h> -#include <linux/threads.h> - -/* - * Maximum number of interrupt sources that we can handle. - */ -#define NR_IRQS 512 - -/* this number is used when no interrupt has been assigned */ -#define NO_IRQ (-1) - -/* - * These constants are used for passing information about interrupt - * signal polarity and level/edge sensing to the low-level PIC chip - * drivers. - */ -#define IRQ_SENSE_MASK 0x1 -#define IRQ_SENSE_LEVEL 0x1 /* interrupt on active level */ -#define IRQ_SENSE_EDGE 0x0 /* interrupt triggered by edge */ - -#define IRQ_POLARITY_MASK 0x2 -#define IRQ_POLARITY_POSITIVE 0x2 /* high level or low->high edge */ -#define IRQ_POLARITY_NEGATIVE 0x0 /* low level or high->low edge */ - -/* - * IRQ line status macro IRQ_PER_CPU is used - */ -#define ARCH_HAS_IRQ_PER_CPU - -#define get_irq_desc(irq) (&irq_desc[(irq)]) - -/* Define a way to iterate across irqs. */ -#define for_each_irq(i) \ - for ((i) = 0; (i) < NR_IRQS; ++(i)) - -/* Interrupt numbers are virtual in case they are sparsely - * distributed by the hardware. - */ -extern unsigned int virt_irq_to_real_map[NR_IRQS]; - -/* Create a mapping for a real_irq if it doesn't already exist. - * Return the virtual irq as a convenience. - */ -int virt_irq_create_mapping(unsigned int real_irq); -void virt_irq_init(void); - -static inline unsigned int virt_irq_to_real(unsigned int virt_irq) -{ - return virt_irq_to_real_map[virt_irq]; -} - -extern unsigned int real_irq_to_virt_slowpath(unsigned int real_irq); - -/* - * Because many systems have two overlapping names spaces for - * interrupts (ISA and XICS for example), and the ISA interrupts - * have historically not been easy to renumber, we allow ISA - * interrupts to take values 0 - 15, and shift up the remaining - * interrupts by 0x10. - */ -#define NUM_ISA_INTERRUPTS 0x10 -extern int __irq_offset_value; - -static inline int irq_offset_up(int irq) -{ - return(irq + __irq_offset_value); -} - -static inline int irq_offset_down(int irq) -{ - return(irq - __irq_offset_value); -} - -static inline int irq_offset_value(void) -{ - return __irq_offset_value; -} - -static __inline__ int irq_canonicalize(int irq) -{ - return irq; -} - -extern int distribute_irqs; - -struct irqaction; -struct pt_regs; - -#ifdef CONFIG_IRQSTACKS -/* - * Per-cpu stacks for handling hard and soft interrupts. - */ -extern struct thread_info *hardirq_ctx[NR_CPUS]; -extern struct thread_info *softirq_ctx[NR_CPUS]; - -extern void irq_ctx_init(void); -extern void call_do_softirq(struct thread_info *tp); -extern int call_handle_IRQ_event(int irq, struct pt_regs *regs, - struct irqaction *action, struct thread_info *tp); - -#define __ARCH_HAS_DO_SOFTIRQ - -#else -#define irq_ctx_init() - -#endif /* CONFIG_IRQSTACKS */ - -#endif /* _ASM_IRQ_H */ -#endif /* __KERNEL__ */ |