| /* $Id: irq.h,v 1.21 2002/01/23 11:27:36 davem Exp $ |
| * irq.h: IRQ registers on the 64-bit Sparc. |
| * |
| * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) |
| * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz) |
| */ |
| |
| #ifndef _SPARC64_IRQ_H |
| #define _SPARC64_IRQ_H |
| |
| #include <linux/config.h> |
| #include <linux/linkage.h> |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/interrupt.h> |
| #include <asm/pil.h> |
| #include <asm/ptrace.h> |
| |
| struct ino_bucket; |
| |
| #define MAX_IRQ_DESC_ACTION 4 |
| |
| struct irq_desc { |
| void (*pre_handler)(struct ino_bucket *, void *, void *); |
| void *pre_handler_arg1; |
| void *pre_handler_arg2; |
| u32 action_active_mask; |
| struct irqaction action[MAX_IRQ_DESC_ACTION]; |
| }; |
| |
| /* You should not mess with this directly. That's the job of irq.c. |
| * |
| * If you make changes here, please update hand coded assembler of |
| * the vectored interrupt trap handler in entry.S -DaveM |
| * |
| * This is currently one DCACHE line, two buckets per L2 cache |
| * line. Keep this in mind please. |
| */ |
| struct ino_bucket { |
| /* Next handler in per-CPU PIL worklist. We know that |
| * bucket pointers have the high 32-bits clear, so to |
| * save space we only store the bits we need. |
| */ |
| /*0x00*/unsigned int irq_chain; |
| |
| /* PIL to schedule this IVEC at. */ |
| /*0x04*/unsigned char pil; |
| |
| /* If an IVEC arrives while irq_info is NULL, we |
| * set this to notify request_irq() about the event. |
| */ |
| /*0x05*/unsigned char pending; |
| |
| /* Miscellaneous flags. */ |
| /*0x06*/unsigned char flags; |
| |
| /* Currently unused. */ |
| /*0x07*/unsigned char __pad; |
| |
| /* Reference to IRQ descriptor for this bucket. */ |
| /*0x08*/struct irq_desc *irq_info; |
| |
| /* Sun5 Interrupt Clear Register. */ |
| /*0x10*/unsigned long iclr; |
| |
| /* Sun5 Interrupt Mapping Register. */ |
| /*0x18*/unsigned long imap; |
| |
| }; |
| |
| /* IMAP/ICLR register defines */ |
| #define IMAP_VALID 0x80000000 /* IRQ Enabled */ |
| #define IMAP_TID_UPA 0x7c000000 /* UPA TargetID */ |
| #define IMAP_TID_JBUS 0x7c000000 /* JBUS TargetID */ |
| #define IMAP_TID_SHIFT 26 |
| #define IMAP_AID_SAFARI 0x7c000000 /* Safari AgentID */ |
| #define IMAP_AID_SHIFT 26 |
| #define IMAP_NID_SAFARI 0x03e00000 /* Safari NodeID */ |
| #define IMAP_NID_SHIFT 21 |
| #define IMAP_IGN 0x000007c0 /* IRQ Group Number */ |
| #define IMAP_INO 0x0000003f /* IRQ Number */ |
| #define IMAP_INR 0x000007ff /* Full interrupt number*/ |
| |
| #define ICLR_IDLE 0x00000000 /* Idle state */ |
| #define ICLR_TRANSMIT 0x00000001 /* Transmit state */ |
| #define ICLR_PENDING 0x00000003 /* Pending state */ |
| |
| /* Only 8-bits are available, be careful. -DaveM */ |
| #define IBF_PCI 0x02 /* PSYCHO/SABRE/SCHIZO PCI interrupt. */ |
| #define IBF_ACTIVE 0x04 /* Interrupt is active and has a handler.*/ |
| #define IBF_INPROGRESS 0x10 /* IRQ is being serviced. */ |
| |
| #define NUM_IVECS (IMAP_INR + 1) |
| extern struct ino_bucket ivector_table[NUM_IVECS]; |
| |
| #define __irq_ino(irq) \ |
| (((struct ino_bucket *)(unsigned long)(irq)) - &ivector_table[0]) |
| #define __irq_pil(irq) ((struct ino_bucket *)(unsigned long)(irq))->pil |
| #define __bucket(irq) ((struct ino_bucket *)(unsigned long)(irq)) |
| #define __irq(bucket) ((unsigned int)(unsigned long)(bucket)) |
| |
| #define NR_IRQS 16 |
| |
| #define irq_canonicalize(irq) (irq) |
| extern void disable_irq(unsigned int); |
| #define disable_irq_nosync disable_irq |
| extern void enable_irq(unsigned int); |
| extern unsigned int build_irq(int pil, int inofixup, unsigned long iclr, unsigned long imap); |
| extern unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino, int pil, unsigned char flags); |
| extern unsigned int sbus_build_irq(void *sbus, unsigned int ino); |
| |
| static __inline__ void set_softint(unsigned long bits) |
| { |
| __asm__ __volatile__("wr %0, 0x0, %%set_softint" |
| : /* No outputs */ |
| : "r" (bits)); |
| } |
| |
| static __inline__ void clear_softint(unsigned long bits) |
| { |
| __asm__ __volatile__("wr %0, 0x0, %%clear_softint" |
| : /* No outputs */ |
| : "r" (bits)); |
| } |
| |
| static __inline__ unsigned long get_softint(void) |
| { |
| unsigned long retval; |
| |
| __asm__ __volatile__("rd %%softint, %0" |
| : "=r" (retval)); |
| return retval; |
| } |
| |
| struct irqaction; |
| struct pt_regs; |
| int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *); |
| |
| #endif |