1#ifndef __ASM_SH_IRQ_H 2#define __ASM_SH_IRQ_H 3 4#include <asm/machvec.h> 5 6/* 7 * A sane default based on a reasonable vector table size, platforms are 8 * advised to cap this at the hard limit that they're interested in 9 * through the machvec. 10 */ 11#define NR_IRQS 256 12 13/* 14 * Convert back and forth between INTEVT and IRQ values. 15 */ 16#ifdef CONFIG_CPU_HAS_INTEVT 17#define evt2irq(evt) (((evt) >> 5) - 16) 18#define irq2evt(irq) (((irq) + 16) << 5) 19#else 20#define evt2irq(evt) (evt) 21#define irq2evt(irq) (irq) 22#endif 23 24/* 25 * Simple Mask Register Support 26 */ 27extern void make_maskreg_irq(unsigned int irq); 28extern unsigned short *irq_mask_register; 29 30/* 31 * PINT IRQs 32 */ 33void init_IRQ_pint(void); 34 35/* 36 * The shift value is now the number of bits to shift, not the number of 37 * bits/4. This is to make it easier to read the value directly from the 38 * datasheets. The IPR address, addr, will be set from ipr_idx via the 39 * map_ipridx_to_addr function. 40 */ 41struct ipr_data { 42 unsigned int irq; 43 int ipr_idx; /* Index for the IPR registered */ 44 int shift; /* Number of bits to shift the data */ 45 int priority; /* The priority */ 46 unsigned int addr; /* Address of Interrupt Priority Register */ 47}; 48 49/* 50 * Given an IPR IDX, map the value to an IPR register address. 51 */ 52unsigned int map_ipridx_to_addr(int idx); 53 54/* 55 * Enable individual interrupt mode for external IPR IRQs. 56 */ 57void ipr_irq_enable_irlm(void); 58 59/* 60 * Function for "on chip support modules". 61 */ 62void make_ipr_irq(struct ipr_data *table, unsigned int nr_irqs); 63void make_imask_irq(unsigned int irq); 64void init_IRQ_ipr(void); 65 66struct intc2_data { 67 unsigned short irq; 68 unsigned char ipr_offset, ipr_shift; 69 unsigned char msk_offset, msk_shift; 70 unsigned char priority; 71}; 72 73void make_intc2_irq(struct intc2_data *, unsigned int nr_irqs); 74void init_IRQ_intc2(void); 75 76static inline int generic_irq_demux(int irq) 77{ 78 return irq; 79} 80 81#define irq_canonicalize(irq) (irq) 82#define irq_demux(irq) sh_mv.mv_irq_demux(irq) 83 84#ifdef CONFIG_4KSTACKS 85extern void irq_ctx_init(int cpu); 86extern void irq_ctx_exit(int cpu); 87# define __ARCH_HAS_DO_SOFTIRQ 88#else 89# define irq_ctx_init(cpu) do { } while (0) 90# define irq_ctx_exit(cpu) do { } while (0) 91#endif 92 93#endif /* __ASM_SH_IRQ_H */ 94