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/6.4/sys/arm/xscale/ixp425/ixp425_intr.h 167038 2007-02-26 23:13:09Z cognet $
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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