ixp425_intr.h revision 164426 
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: head/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
55void ixp425_do_pending(void);
56
57extern __volatile uint32_t intr_enabled;
58extern uint32_t intr_steer;
59
60static __inline void __attribute__((__unused__))
61ixp425_set_intrmask(void)
62{
63	IXPREG(IXP425_INT_ENABLE) = intr_enabled & IXP425_INT_HWMASK;
64}
65
66static __inline void
67ixp425_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
77static __inline void __attribute__((__unused__))
78ixp425_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
103static __inline int __attribute__((__unused__))
104ixp425_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
119static __inline int __attribute__((__unused__))
120ixp425_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)
136void	_setsoftintr(int);
137
138#else
139
140int	_splraise(int);
141int	_spllower(int);
142void	splx(int);
143void	_setsoftintr(int);
144
145#endif /* ! EVBARM_SPL_NOINLINE */
146
147#endif /* _LOCORE */
148
149#endif /* _IXP425_INTR_H_ */
150