1/*	$NetBSD: ixp425_intr.h,v 1.8 2008/04/27 18:58:45 matt 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 _IXP425_INTR_H_
39#define _IXP425_INTR_H_
40
41#define	ARM_IRQ_HANDLER	_C_LABEL(ixp425_intr_dispatch)
42
43#ifndef _LOCORE
44
45#include <arm/cpu.h>
46#include <arm/armreg.h>
47#include <arm/cpufunc.h>
48
49#include <arm/xscale/ixp425reg.h>
50
51#define IXPREG(reg)     *((volatile u_int32_t*) (reg))
52
53static inline void __attribute__((__unused__))
54ixp425_set_intrmask(void)
55{
56	extern volatile uint32_t intr_enabled;
57
58	IXPREG(IXP425_INT_ENABLE) = intr_enabled & IXP425_INT_HWMASK;
59}
60
61static inline void __attribute__((__unused__))
62ixp425_splx(int ipl)
63{
64	extern int ixp425_imask[];
65	extern volatile uint32_t intr_enabled;
66	extern volatile int ixp425_ipending;
67	int oldirqstate, hwpend;
68
69	/* Don't let the compiler re-order this code with preceding code */
70	__insn_barrier();
71
72	set_curcpl(ipl);
73
74	hwpend = (ixp425_ipending & IXP425_INT_HWMASK) & ~ixp425_imask[ipl];
75	if (hwpend != 0) {
76		oldirqstate = disable_interrupts(I32_bit);
77		intr_enabled |= hwpend;
78		ixp425_set_intrmask();
79		restore_interrupts(oldirqstate);
80	}
81
82#ifdef __HAVE_FAST_SOFTINTS
83	cpu_dosoftints();
84#endif
85}
86
87static inline int __attribute__((__unused__))
88ixp425_splraise(int ipl)
89{
90	int old = curcpl();
91	set_curcpl(ipl);
92
93	/* Don't let the compiler re-order this code with subsequent code */
94	__insn_barrier();
95
96	return (old);
97}
98
99static inline int __attribute__((__unused__))
100ixp425_spllower(int ipl)
101{
102	int old = curcpl();
103	ixp425_splx(ipl);
104	return(old);
105}
106
107#if !defined(EVBARM_SPL_NOINLINE)
108
109#define splx(new)		ixp425_splx(new)
110#define	_spllower(ipl)		ixp425_spllower(ipl)
111#define	_splraise(ipl)		ixp425_splraise(ipl)
112
113#else
114
115int	_splraise(int);
116int	_spllower(int);
117void	splx(int);
118
119#endif /* ! EVBARM_SPL_NOINLINE */
120
121#endif /* _LOCORE */
122
123#endif /* _IXP425_INTR_H_ */
124