ih_spm_ready.c

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00001 /*
00002  * Copyright (C) 2001-2005 by egnite Software GmbH. All rights reserved.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  *
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the copyright holders nor the names of
00014  *    contributors may be used to endorse or promote products derived
00015  *    from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00018  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00019  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00020  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00021  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00022  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00023  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00024  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00025  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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00027  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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00032  */
00033 
00076 #include <dev/irqreg.h>
00077 
00082 
00083 #if defined(SIG_SPM_READY) || defined(iv_SPM_READY)
00084 
00085 static int AvrSpmRdyIrqCtl(int cmd, void *param);
00086 
00087 IRQ_HANDLER sig_SPM_READY = {
00088 #ifdef NUT_PERFMON
00089     0,                          /* Interrupt counter, ir_count. */
00090 #endif
00091     NULL,                       /* Passed argument, ir_arg. */
00092     NULL,                       /* Handler subroutine, ir_handler. */
00093     AvrSpmRdyIrqCtl             /* Interrupt control, ir_ctl. */
00094 };
00095 
00109 static int AvrSpmRdyIrqCtl(int cmd, void *param)
00110 {
00111     int rc = 0;
00112     u_int *ival = (u_int *) param;
00113     int_fast8_t enabled = bit_is_set(SPMCSR, SPMIE);
00114 
00115     /* Disable interrupt. */
00116     cbi(EECR, EERIE);
00117 
00118     switch (cmd) {
00119     case NUT_IRQCTL_INIT:
00120     case NUT_IRQCTL_DISABLE:
00121         enabled = 0;
00122         break;
00123     case NUT_IRQCTL_ENABLE:
00124         enabled = 1;
00125         break;
00126     case NUT_IRQCTL_GETPRIO:
00127         *ival = 0;
00128         break;
00129 #ifdef NUT_PERFMON
00130     case NUT_IRQCTL_GETCOUNT:
00131         *ival = (u_int) sig_SPM_READY.ir_count;
00132         sig_SPM_READY.ir_count = 0;
00133         break;
00134 #endif
00135     default:
00136         rc = -1;
00137         break;
00138     }
00139 
00140     /* Enable interrupt. */
00141     if (enabled) {
00142         sbi(SPMCSR, SPMIE);
00143     }
00144     return rc;
00145 }
00146 
00150 #ifdef __IMAGECRAFT__
00151 #pragma interrupt_handler SIG_SPM_READY:iv_SPM_READY
00152 #endif
00153 NUTSIGNAL(SIG_SPM_READY, sig_SPM_READY)
00154 #endif
00155 

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