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,
00026  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00027  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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00032  */
00033 
00073 #include <dev/irqreg.h>
00074 
00079 
00080 #if defined(SIG_SPM_READY) || defined(iv_SPM_READY)
00081 
00082 static int AvrSpmRdyIrqCtl(int cmd, void *param);
00083 
00084 IRQ_HANDLER sig_SPM_READY = {
00085 #ifdef NUT_PERFMON
00086     0,                          /* Interrupt counter, ir_count. */
00087 #endif
00088     NULL,                       /* Passed argument, ir_arg. */
00089     NULL,                       /* Handler subroutine, ir_handler. */
00090     AvrSpmRdyIrqCtl             /* Interrupt control, ir_ctl. */
00091 };
00092 
00106 static int AvrSpmRdyIrqCtl(int cmd, void *param)
00107 {
00108     int rc = 0;
00109     u_int *ival = (u_int *) param;
00110     int enabled = bit_is_set(SPMCSR, SPMIE);
00111 
00112     /* Disable interrupt. */
00113     cbi(EECR, EERIE);
00114 
00115     switch (cmd) {
00116     case NUT_IRQCTL_INIT:
00117     case NUT_IRQCTL_DISABLE:
00118         enabled = 0;
00119         break;
00120     case NUT_IRQCTL_ENABLE:
00121         enabled = 1;
00122         break;
00123     case NUT_IRQCTL_GETPRIO:
00124         *ival = 0;
00125         break;
00126 #ifdef NUT_PERFMON
00127     case NUT_IRQCTL_GETCOUNT:
00128         *ival = (u_int) sig_SPM_READY.ir_count;
00129         sig_SPM_READY.ir_count = 0;
00130         break;
00131 #endif
00132     default:
00133         rc = -1;
00134         break;
00135     }
00136 
00137     /* Enable interrupt. */
00138     if (enabled) {
00139         sbi(SPMCSR, SPMIE);
00140     }
00141     return rc;
00142 }
00143 
00147 #ifdef __IMAGECRAFT__
00148 #pragma interrupt_handler SIG_SPM_READY:iv_SPM_READY
00149 #endif
00150 NUTSIGNAL(SIG_SPM_READY, sig_SPM_READY)
00151 #endif
00152 

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