1 #ifndef __ASM_SH_IRQ_H 2 #define __ASM_SH_IRQ_H 3 4 #include <linux/cpumask.h> 5 #include <asm/machvec.h> 6 7 /* 8 * A sane default based on a reasonable vector table size, platforms are 9 * advised to cap this at the hard limit that they're interested in 10 * through the machvec. 11 */ 12 #define NR_IRQS 512 13 #define NR_IRQS_LEGACY 8 /* Legacy external IRQ0-7 */ 14 15 /* 16 * This is a special IRQ number for indicating that no IRQ has been 17 * triggered and to simply ignore the IRQ dispatch. This is a special 18 * case that can happen with IRQ auto-distribution when multiple CPUs 19 * are woken up and signalled in parallel. 20 */ 21 #define NO_IRQ_IGNORE ((unsigned int)-1) 22 23 /* 24 * Convert back and forth between INTEVT and IRQ values. 25 */ 26 #ifdef CONFIG_CPU_HAS_INTEVT 27 #define evt2irq(evt) (((evt) >> 5) - 16) 28 #define irq2evt(irq) (((irq) + 16) << 5) 29 #else 30 #define evt2irq(evt) (evt) 31 #define irq2evt(irq) (irq) 32 #endif 33 34 /* 35 * Simple Mask Register Support 36 */ 37 extern void make_maskreg_irq(unsigned int irq); 38 extern unsigned short *irq_mask_register; 39 40 /* 41 * PINT IRQs 42 */ 43 void init_IRQ_pint(void); 44 void make_imask_irq(unsigned int irq); 45 generic_irq_demux(int irq)46static inline int generic_irq_demux(int irq) 47 { 48 return irq; 49 } 50 51 #define irq_demux(irq) sh_mv.mv_irq_demux(irq) 52 53 void init_IRQ(void); 54 void migrate_irqs(void); 55 56 asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs); 57 58 #ifdef CONFIG_IRQSTACKS 59 extern void irq_ctx_init(int cpu); 60 extern void irq_ctx_exit(int cpu); 61 # define __ARCH_HAS_DO_SOFTIRQ 62 #else 63 # define irq_ctx_init(cpu) do { } while (0) 64 # define irq_ctx_exit(cpu) do { } while (0) 65 #endif 66 67 #ifdef CONFIG_INTC_BALANCING 68 extern unsigned int irq_lookup(unsigned int irq); 69 extern void irq_finish(unsigned int irq); 70 #else 71 #define irq_lookup(irq) (irq) 72 #define irq_finish(irq) do { } while (0) 73 #endif 74 75 #include <asm-generic/irq.h> 76 #ifdef CONFIG_CPU_SH5 77 #include <cpu/irq.h> 78 #endif 79 80 #endif /* __ASM_SH_IRQ_H */ 81