include/native/intr.h

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00001 
00022 #ifndef _XENO_INTR_H
00023 #define _XENO_INTR_H
00024 
00025 #include <nucleus/synch.h>
00026 #include <nucleus/intr.h>
00027 #include <native/types.h>
00028 
00029 /* Creation flag. */
00030 #define I_NOAUTOENA  XN_ISR_NOENABLE  /* Do not auto-enable interrupt channel
00031                                         after each IRQ. */
00032 #define I_PROPAGATE  XN_ISR_PROPAGATE /* Propagate IRQs down the
00033                                        pipeline after processing; IOW,
00034                                        pass them to Linux. */
00035 typedef struct rt_intr_info {
00036 
00037     unsigned irq;       /* !< Interrupt request number. */
00038 
00039     unsigned long hits; /* !< Number of receipts (since attachment), 0 if
00040                               statistics support is disable in the nucleus. */
00041 
00042     char name[XNOBJECT_NAME_LEN]; /* !< Symbolic name. */
00043 
00044 } RT_INTR_INFO;
00045 
00046 typedef struct rt_intr_placeholder {
00047     xnhandle_t opaque;
00048 } RT_INTR_PLACEHOLDER;
00049 
00050 #if defined(__KERNEL__) || defined(__XENO_SIM__)
00051 
00052 #define XENO_INTR_MAGIC 0x55550a0a
00053 
00054 /* Creation flags. */
00055 #define I_SHARED        XN_ISR_SHARED
00056 #define I_EDGE          XN_ISR_EDGE
00057 
00058 #define RT_INTR_HANDLED         XN_ISR_HANDLED
00059 #define RT_INTR_NONE            XN_ISR_NONE
00060 #define RT_INTR_PROPAGATE       XN_ISR_PROPAGATE
00061 #define RT_INTR_NOENABLE        XN_ISR_NOENABLE
00062 
00063 #define I_DESC(xintr)  ((RT_INTR *)(xintr)->cookie)
00064 
00065 typedef struct rt_intr {
00066 
00067     unsigned magic;   /* !< Magic code - must be first */
00068 
00069     xnholder_t link;    /* !< Link in global interrupt queue. */
00070 
00071 #define link2intr(ln)           container_of(ln, RT_INTR, link)
00072 
00073     xnintr_t intr_base;   /* !< Base interrupt object. */
00074 
00075     void *private_data; /* !< Private user-defined data. */
00076 
00077     xnhandle_t handle;  /* !< Handle in registry -- zero if unregistered. */
00078 
00079     char name[XNOBJECT_NAME_LEN]; /* !< Symbolic name. */
00080 
00081 #if defined(__KERNEL__) && defined(CONFIG_XENO_OPT_PERVASIVE)
00082 
00083     int mode;           /* !< Interrupt control mode. */
00084 
00085     int pending;        /* !< Pending hits to process. */
00086 
00087     xnsynch_t synch_base; /* !< Base synchronization object. */
00088 
00089     pid_t cpid;         /* !< Creator's pid. */
00090 
00091 #endif /* __KERNEL__ && CONFIG_XENO_OPT_PERVASIVE */
00092 
00093 } RT_INTR;
00094 
00095 #define rt_intr_save(x)    splhigh(x)
00096 #define rt_intr_restore(x) splexit(x)
00097 #define rt_intr_unmask()   splnone()
00098 #define rt_intr_flags(x)   splget(x)
00099 
00100 #ifdef __cplusplus
00101 extern "C" {
00102 #endif
00103 
00104 int __native_intr_pkg_init(void);
00105 
00106 void __native_intr_pkg_cleanup(void);
00107 
00108 int rt_intr_create(RT_INTR *intr,
00109                    const char *name,
00110                    unsigned irq,
00111                    rt_isr_t isr,
00112                    rt_iack_t iack,
00113                    int mode);
00114 
00115 #ifdef CONFIG_XENO_OPT_PERVASIVE
00116 int rt_intr_handler(xnintr_t *cookie);
00117 #endif /* CONFIG_XENO_OPT_PERVASIVE */
00118 
00119 #ifdef __cplusplus
00120 }
00121 #endif
00122 
00123 #else /* !(__KERNEL__ || __XENO_SIM__) */
00124 
00125 typedef RT_INTR_PLACEHOLDER RT_INTR;
00126 
00127 #ifdef __cplusplus
00128 extern "C" {
00129 #endif
00130 
00131 int rt_intr_bind(RT_INTR *intr,
00132                  const char *name,
00133                  RTIME timeout);
00134 
00135 static inline int rt_intr_unbind (RT_INTR *intr)
00136 
00137 {
00138     intr->opaque = XN_NO_HANDLE;
00139     return 0;
00140 }
00141 
00142 int rt_intr_create(RT_INTR *intr,
00143                    const char *name,
00144                    unsigned irq,
00145                    int mode);
00146 
00147 int rt_intr_wait(RT_INTR *intr,
00148                  RTIME timeout);
00149 
00150 #ifdef __cplusplus
00151 }
00152 #endif
00153 
00154 #endif /* __KERNEL__ || __XENO_SIM__ */
00155 
00156 #ifdef __cplusplus
00157 extern "C" {
00158 #endif
00159 
00160 /* Public interface. */
00161 
00162 int rt_intr_delete(RT_INTR *intr);
00163 
00164 int rt_intr_enable(RT_INTR *intr);
00165 
00166 int rt_intr_disable(RT_INTR *intr);
00167 
00168 int rt_intr_inquire(RT_INTR *intr,
00169                     RT_INTR_INFO *info);
00170 
00171 #ifdef __cplusplus
00172 }
00173 #endif
00174 
00175 #endif /* !_XENO_INTR_H */

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