Logo Search packages:      
Sourcecode: linux version File versions  Download package

irq_64.h

/* irq.h: IRQ registers on the 64-bit Sparc.
 *
 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
 * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
 */

#ifndef _SPARC64_IRQ_H
#define _SPARC64_IRQ_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>

/* IMAP/ICLR register defines */
#define IMAP_VALID            0x80000000UL      /* IRQ Enabled          */
#define IMAP_TID_UPA          0x7c000000UL      /* UPA TargetID         */
#define IMAP_TID_JBUS         0x7c000000UL      /* JBUS TargetID  */
#define IMAP_TID_SHIFT        26
#define IMAP_AID_SAFARI       0x7c000000UL      /* Safari AgentID */
#define IMAP_AID_SHIFT        26
#define IMAP_NID_SAFARI       0x03e00000UL      /* Safari NodeID  */
#define IMAP_NID_SHIFT        21
#define IMAP_IGN        0x000007c0UL      /* IRQ Group Number     */
#define IMAP_INO        0x0000003fUL      /* IRQ Number           */
#define IMAP_INR        0x000007ffUL      /* Full interrupt number*/

#define ICLR_IDLE       0x00000000UL      /* Idle state           */
#define ICLR_TRANSMIT         0x00000001UL      /* Transmit state */
#define ICLR_PENDING          0x00000003UL      /* Pending state  */

/* The largest number of unique interrupt sources we support.
 * If this needs to ever be larger than 255, you need to change
 * the type of ino_bucket->virt_irq as appropriate.
 *
 * ino_bucket->virt_irq allocation is made during {sun4v_,}build_irq().
 */
#define NR_IRQS    255

extern void irq_install_pre_handler(int virt_irq,
                            void (*func)(unsigned int, void *, void *),
                            void *arg1, void *arg2);
#define irq_canonicalize(irq) (irq)
extern unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap);
extern unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino);
extern unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino);
extern unsigned int sun4v_build_msi(u32 devhandle, unsigned int *virt_irq_p,
                            unsigned int msi_devino_start,
                            unsigned int msi_devino_end);
extern void sun4v_destroy_msi(unsigned int virt_irq);
extern unsigned int sun4u_build_msi(u32 portid, unsigned int *virt_irq_p,
                            unsigned int msi_devino_start,
                            unsigned int msi_devino_end,
                            unsigned long imap_base,
                            unsigned long iclr_base);
extern void sun4u_destroy_msi(unsigned int virt_irq);
extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);

extern unsigned char virt_irq_alloc(unsigned int dev_handle,
                            unsigned int dev_ino);
#ifdef CONFIG_PCI_MSI
extern void virt_irq_free(unsigned int virt_irq);
#endif

extern void __init init_IRQ(void);
extern void fixup_irqs(void);

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;
}

void __trigger_all_cpu_backtrace(void);
#define trigger_all_cpu_backtrace() __trigger_all_cpu_backtrace()

extern void *hardirq_stack[NR_CPUS];
extern void *softirq_stack[NR_CPUS];
#define __ARCH_HAS_DO_SOFTIRQ

#endif

Generated by  Doxygen 1.6.0   Back to index