include/native/intr.h

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#ifndef _XENO_INTR_H
#define _XENO_INTR_H

#include <nucleus/intr.h>
#include <native/types.h>

/* Creation flag. */
#define I_NOAUTOENA  XN_ISR_NOENABLE  /* Do not auto-enable interrupt channel
                                        after each IRQ. */
#define I_PROPAGATE  XN_ISR_PROPAGATE /* Propagate IRQs down the
                                       pipeline after processing; IOW,
                                       pass them to Linux. */
typedef struct rt_intr_info {

    unsigned irq;       /* !< Interrupt request number. */

    unsigned long hits; /* !< Number of receipts (since attachment), 0 if
                              statistics support is disable in the nucleus. */

    char name[XNOBJECT_NAME_LEN]; /* !< Symbolic name. */

} RT_INTR_INFO;

typedef struct rt_intr_placeholder {
    xnhandle_t opaque;
} RT_INTR_PLACEHOLDER;

#if (defined(__KERNEL__) || defined(__XENO_SIM__)) && !defined(DOXYGEN_CPP)

#include <nucleus/synch.h>
#include <native/ppd.h>

#define XENO_INTR_MAGIC 0x55550a0a

/* Creation flags. */
#define I_SHARED        XN_ISR_SHARED
#define I_EDGE          XN_ISR_EDGE

#define RT_INTR_HANDLED         XN_ISR_HANDLED
#define RT_INTR_NONE            XN_ISR_NONE
#define RT_INTR_PROPAGATE       XN_ISR_PROPAGATE
#define RT_INTR_NOENABLE        XN_ISR_NOENABLE

#define I_DESC(xintr)  ((RT_INTR *)(xintr)->cookie)

typedef struct rt_intr {

    unsigned magic;             /* !< Magic code - must be first */

    xnintr_t intr_base;         /* !< Base interrupt object. */

    void *private_data;         /* !< Private user-defined data. */

    xnhandle_t handle;          /* !< Handle in registry -- zero if unregistered. */

    char name[XNOBJECT_NAME_LEN]; /* !< Symbolic name. */

#ifdef CONFIG_XENO_OPT_PERVASIVE
    int mode;                   /* !< Interrupt control mode. */

    int pending;                /* !< Pending hits to process. */

    xnsynch_t synch_base;       /* !< Base synchronization object. */

    pid_t cpid;                 /* !< Creator's pid. */
#endif /* CONFIG_XENO_OPT_PERVASIVE */

    xnholder_t rlink;           /* !< Link in resource queue. */

#define rlink2intr(ln)          container_of(ln, RT_INTR, rlink)

    xnqueue_t *rqueue;          /* !< Backpointer to resource queue. */

} RT_INTR;

#define rt_intr_save(x)    splhigh(x)
#define rt_intr_restore(x) splexit(x)
#define rt_intr_unmask()   splnone()
#define rt_intr_flags(x)   splget(x)

#ifdef __cplusplus
extern "C" {
#endif

#ifdef CONFIG_XENO_OPT_NATIVE_INTR

int __native_intr_pkg_init(void);

void __native_intr_pkg_cleanup(void);

static inline void __native_intr_flush_rq(xnqueue_t *rq)
{
        xeno_flush_rq(RT_INTR, rq, intr);
}

#else /* !CONFIG_XENO_OPT_NATIVE_INTR */

#define __native_intr_pkg_init()                ({ 0; })
#define __native_intr_pkg_cleanup()             do { } while(0)
#define __native_intr_flush_rq(rq)              do { } while(0)

#endif /* !CONFIG_XENO_OPT_NATIVE_INTR */

int rt_intr_create(RT_INTR *intr,
                   const char *name,
                   unsigned irq,
                   rt_isr_t isr,
                   rt_iack_t iack,
                   int mode);

#ifdef CONFIG_XENO_OPT_PERVASIVE
int rt_intr_handler(xnintr_t *cookie);
#endif /* CONFIG_XENO_OPT_PERVASIVE */

#ifdef __cplusplus
}
#endif

#else /* !(__KERNEL__ || __XENO_SIM__) */

typedef RT_INTR_PLACEHOLDER RT_INTR;

#ifdef __cplusplus
extern "C" {
#endif

int rt_intr_bind(RT_INTR *intr,
                 const char *name,
                 RTIME timeout);

static inline int rt_intr_unbind (RT_INTR *intr)

{
    intr->opaque = XN_NO_HANDLE;
    return 0;
}

int rt_intr_create(RT_INTR *intr,
                   const char *name,
                   unsigned irq,
                   int mode);

int rt_intr_wait(RT_INTR *intr,
                 RTIME timeout);

#ifdef __cplusplus
}
#endif

#endif /* __KERNEL__ || __XENO_SIM__ */

#ifdef __cplusplus
extern "C" {
#endif

/* Public interface. */

int rt_intr_delete(RT_INTR *intr);

int rt_intr_enable(RT_INTR *intr);

int rt_intr_disable(RT_INTR *intr);

int rt_intr_inquire(RT_INTR *intr,
                    RT_INTR_INFO *info);

#ifdef __cplusplus
}
#endif

#endif /* !_XENO_INTR_H */

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