1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ASM_SH_IRQ_H 3 #define __ASM_SH_IRQ_H 4 5 #include <linux/cpumask.h> 6 #include <asm/machvec.h> 7 8 /* 9 * Only legacy non-sparseirq platforms have to set a reasonably sane 10 * value here. sparseirq platforms allocate their irq_descs on the fly, 11 * so will expand automatically based on the number of registered IRQs. 12 */ 13 #ifdef CONFIG_SPARSE_IRQ 14 # define NR_IRQS 8 15 #else 16 # define NR_IRQS 512 17 #endif 18 19 /* 20 * This is a special IRQ number for indicating that no IRQ has been 21 * triggered and to simply ignore the IRQ dispatch. This is a special 22 * case that can happen with IRQ auto-distribution when multiple CPUs 23 * are woken up and signalled in parallel. 24 */ 25 #define NO_IRQ_IGNORE ((unsigned int)-1) 26 27 /* 28 * Simple Mask Register Support 29 */ 30 extern void make_maskreg_irq(unsigned int irq); 31 extern unsigned short *irq_mask_register; 32 33 /* 34 * PINT IRQs 35 */ 36 void init_IRQ_pint(void); 37 void make_imask_irq(unsigned int irq); 38 39 static inline int generic_irq_demux(int irq) 40 { 41 return irq; 42 } 43 44 #define irq_demux(irq) sh_mv.mv_irq_demux(irq) 45 46 void init_IRQ(void); 47 void migrate_irqs(void); 48 49 asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs); 50 51 #ifdef CONFIG_IRQSTACKS 52 extern void irq_ctx_init(int cpu); 53 extern void irq_ctx_exit(int cpu); 54 # define __ARCH_HAS_DO_SOFTIRQ 55 #else 56 # define irq_ctx_init(cpu) do { } while (0) 57 # define irq_ctx_exit(cpu) do { } while (0) 58 #endif 59 60 #ifdef CONFIG_INTC_BALANCING 61 extern unsigned int irq_lookup(unsigned int irq); 62 extern void irq_finish(unsigned int irq); 63 #else 64 #define irq_lookup(irq) (irq) 65 #define irq_finish(irq) do { } while (0) 66 #endif 67 68 #include <asm-generic/irq.h> 69 70 #endif /* __ASM_SH_IRQ_H */ 71