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i80321_intr.h revision 1.1 
      1 /*	$NetBSD: i80321_intr.h,v 1.1 2002/08/17 16:42:20 briggs 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 #include <arm/armreg.h>
     42 #include <arm/cpufunc.h>
     43 
     44 #include <arm/xscale/i80321reg.h>
     45 
     46 #if !defined(EVBARM_SPL_NOINLINE)
     47 static __inline void
     48 i80321_set_intrmask(void)
     49 {
     50 	extern __volatile uint32_t intr_enabled;
     51 
     52 	__asm __volatile("mcr p6, 0, %0, c0, c0, 0"
     53 		:
     54 		: "r" (intr_enabled & ICU_INT_HWMASK));
     55 }
     56 
     57 #define INT_SWMASK                                                      \
     58         ((1U << ICU_INT_bit26) | (1U << ICU_INT_bit22) |                \
     59          (1U << ICU_INT_bit5)  | (1U << ICU_INT_bit4))
     60 
     61 static __inline void
     62 i80321_splx(int new)
     63 {
     64 	extern __volatile uint32_t intr_enabled;
     65 	extern __volatile int current_spl_level;
     66 	extern __volatile int i80321_ipending;
     67 	extern void i80321_do_pending(void);
     68 	int oldirqstate, hwpend;
     69 
     70 	current_spl_level = new;
     71 
     72 	hwpend = (i80321_ipending & ICU_INT_HWMASK) & ~new;
     73 	if (hwpend != 0) {
     74 		oldirqstate = disable_interrupts(I32_bit);
     75 		intr_enabled |= hwpend;
     76 		i80321_set_intrmask();
     77 		restore_interrupts(oldirqstate);
     78 	}
     79 
     80 	if ((i80321_ipending & INT_SWMASK) & ~new)
     81 		i80321_do_pending();
     82 }
     83 
     84 static __inline int
     85 i80321_splraise(int ipl)
     86 {
     87 	extern __volatile int current_spl_level;
     88 	extern int i80321_imask[];
     89 	int	old;
     90 
     91 	old = current_spl_level;
     92 	current_spl_level |= i80321_imask[ipl];
     93 
     94 	return (old);
     95 }
     96 
     97 static __inline int
     98 i80321_spllower(int ipl)
     99 {
    100 	extern __volatile int current_spl_level;
    101 	extern int i80321_imask[];
    102 	int old = current_spl_level;
    103 
    104 	i80321_splx(i80321_imask[ipl]);
    105 	return(old);
    106 }
    107 
    108 #define splx(new)		i80321_splx(new)
    109 #define	_spllower(ipl)		i80321_spllower(ipl)
    110 #define	_splraise(ipl)		i80321_splraise(ipl)
    111 void	_setsoftintr(int);
    112 
    113 #undef INT_SWMASK
    114 
    115 #else	/* !EVBARM_SPL_NOINTR */
    116 
    117 int	_splraise(int);
    118 int	_spllower(int);
    119 void	splx(int);
    120 void	_setsoftintr(int);
    121 
    122 #endif	/* else !EVBARM_SPL_NOINTR */
    123 
    124 #endif _I80321_INTR_H_
    125