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i80321_intr.h revision 1.3 
      1 /*	$NetBSD: i80321_intr.h,v 1.3 2003/01/03 00:41:20 thorpej 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 
     38 #ifndef _I80321_INTR_H_
     39 #define _I80321_INTR_H_
     40 
     41 #define	ARM_IRQ_HANDLER	_C_LABEL(i80321_intr_dispatch)
     42 
     43 #ifndef _LOCORE
     44 
     45 #include <arm/armreg.h>
     46 #include <arm/cpufunc.h>
     47 
     48 #include <arm/xscale/i80321reg.h>
     49 
     50 void i80321_do_pending(void);
     51 
     52 static __inline void __attribute__((__unused__))
     53 i80321_set_intrmask(void)
     54 {
     55 	extern __volatile uint32_t intr_enabled;
     56 
     57 	__asm __volatile("mcr p6, 0, %0, c0, c0, 0"
     58 		:
     59 		: "r" (intr_enabled & ICU_INT_HWMASK));
     60 }
     61 
     62 #define INT_SWMASK                                                      \
     63         ((1U << ICU_INT_bit26) | (1U << ICU_INT_bit22) |                \
     64          (1U << ICU_INT_bit5)  | (1U << ICU_INT_bit4))
     65 
     66 static __inline void __attribute__((__unused__))
     67 i80321_splx(int new)
     68 {
     69 	extern __volatile uint32_t intr_enabled;
     70 	extern __volatile int current_spl_level;
     71 	extern __volatile int i80321_ipending;
     72 	extern void i80321_do_pending(void);
     73 	int oldirqstate, hwpend;
     74 
     75 	current_spl_level = new;
     76 
     77 	hwpend = (i80321_ipending & ICU_INT_HWMASK) & ~new;
     78 	if (hwpend != 0) {
     79 		oldirqstate = disable_interrupts(I32_bit);
     80 		intr_enabled |= hwpend;
     81 		i80321_set_intrmask();
     82 		restore_interrupts(oldirqstate);
     83 	}
     84 
     85 	if ((i80321_ipending & INT_SWMASK) & ~new)
     86 		i80321_do_pending();
     87 }
     88 
     89 static __inline int __attribute__((__unused__))
     90 i80321_splraise(int ipl)
     91 {
     92 	extern __volatile int current_spl_level;
     93 	extern int i80321_imask[];
     94 	int	old;
     95 
     96 	old = current_spl_level;
     97 	current_spl_level |= i80321_imask[ipl];
     98 
     99 	return (old);
    100 }
    101 
    102 static __inline int __attribute__((__unused__))
    103 i80321_spllower(int ipl)
    104 {
    105 	extern __volatile int current_spl_level;
    106 	extern int i80321_imask[];
    107 	int old = current_spl_level;
    108 
    109 	i80321_splx(i80321_imask[ipl]);
    110 	return(old);
    111 }
    112 
    113 #if !defined(EVBARM_SPL_NOINLINE)
    114 
    115 #define splx(new)		i80321_splx(new)
    116 #define	_spllower(ipl)		i80321_spllower(ipl)
    117 #define	_splraise(ipl)		i80321_splraise(ipl)
    118 void	_setsoftintr(int);
    119 
    120 #else
    121 
    122 int	_splraise(int);
    123 int	_spllower(int);
    124 void	splx(int);
    125 void	_setsoftintr(int);
    126 
    127 #endif /* ! EVBARM_SPL_NOINLINE */
    128 
    129 #endif /* _LOCORE */
    130 
    131 #endif _I80321_INTR_H_
    132