The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/arm/xscale/ixp425/ixp425_intr.h

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    1 /*      $NetBSD: ixp425_intr.h,v 1.6 2005/12/24 20:06:52 perry Exp $    */
    2 
    3 /*
    4  * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
    5  * All rights reserved.
    6  *
    7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed for the NetBSD Project by
   20  *      Wasabi Systems, Inc.
   21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
   22  *    or promote products derived from this software without specific prior
   23  *    written permission.
   24  *
   25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
   26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
   29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   35  * POSSIBILITY OF SUCH DAMAGE.
   36  *
   37  * $FreeBSD: releng/7.4/sys/arm/xscale/ixp425/ixp425_intr.h 164426 2006-11-19 23:55:23Z sam $
   38  *
   39  */
   40 
   41 #ifndef _IXP425_INTR_H_
   42 #define _IXP425_INTR_H_
   43 
   44 #define ARM_IRQ_HANDLER _C_LABEL(ixp425_intr_dispatch)
   45 
   46 #ifndef _LOCORE
   47 
   48 #include <machine/armreg.h>
   49 #include <machine/cpufunc.h>
   50 
   51 #include <arm/xscale/ixp425/ixp425reg.h>
   52 
   53 #define IXPREG(reg)     *((__volatile u_int32_t*) (reg))
   54 
   55 void ixp425_do_pending(void);
   56 
   57 extern __volatile uint32_t intr_enabled;
   58 extern uint32_t intr_steer;
   59 
   60 static __inline void __attribute__((__unused__))
   61 ixp425_set_intrmask(void)
   62 {
   63         IXPREG(IXP425_INT_ENABLE) = intr_enabled & IXP425_INT_HWMASK;
   64 }
   65 
   66 static __inline void
   67 ixp425_set_intrsteer(void)
   68 {
   69         IXPREG(IXP425_INT_SELECT) = intr_steer & IXP425_INT_HWMASK;
   70 }
   71 
   72 #define INT_SWMASK                                              \
   73         ((1U << IXP425_INT_bit31) | (1U << IXP425_INT_bit30) |  \
   74          (1U << IXP425_INT_bit14) | (1U << IXP425_INT_bit11))
   75 
   76 #if 0
   77 static __inline void __attribute__((__unused__))
   78 ixp425_splx(int new)
   79 {
   80         extern __volatile uint32_t intr_enabled;
   81         extern __volatile int current_spl_level;
   82         extern __volatile int ixp425_ipending;
   83         extern void ixp425_do_pending(void);
   84         int oldirqstate, hwpend;
   85 
   86         /* Don't let the compiler re-order this code with preceding code */
   87         __insn_barrier();
   88 
   89         current_spl_level = new;
   90 
   91         hwpend = (ixp425_ipending & IXP425_INT_HWMASK) & ~new;
   92         if (hwpend != 0) {
   93                 oldirqstate = disable_interrupts(I32_bit);
   94                 intr_enabled |= hwpend;
   95                 ixp425_set_intrmask();
   96                 restore_interrupts(oldirqstate);
   97         }
   98 
   99         if ((ixp425_ipending & INT_SWMASK) & ~new)
  100                 ixp425_do_pending();
  101 }
  102 
  103 static __inline int __attribute__((__unused__))
  104 ixp425_splraise(int ipl)
  105 {
  106         extern __volatile int current_spl_level;
  107         extern int ixp425_imask[];
  108         int     old;
  109 
  110         old = current_spl_level;
  111         current_spl_level |= ixp425_imask[ipl];
  112 
  113         /* Don't let the compiler re-order this code with subsequent code */
  114         __insn_barrier();
  115 
  116         return (old);
  117 }
  118 
  119 static __inline int __attribute__((__unused__))
  120 ixp425_spllower(int ipl)
  121 {
  122         extern __volatile int current_spl_level;
  123         extern int ixp425_imask[];
  124         int old = current_spl_level;
  125 
  126         ixp425_splx(ixp425_imask[ipl]);
  127         return(old);
  128 }
  129 
  130 #endif
  131 #if !defined(EVBARM_SPL_NOINLINE)
  132 
  133 #define splx(new)               ixp425_splx(new)
  134 #define _spllower(ipl)          ixp425_spllower(ipl)
  135 #define _splraise(ipl)          ixp425_splraise(ipl)
  136 void    _setsoftintr(int);
  137 
  138 #else
  139 
  140 int     _splraise(int);
  141 int     _spllower(int);
  142 void    splx(int);
  143 void    _setsoftintr(int);
  144 
  145 #endif /* ! EVBARM_SPL_NOINLINE */
  146 
  147 #endif /* _LOCORE */
  148 
  149 #endif /* _IXP425_INTR_H_ */

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