1/*	$NetBSD: i80321_intr.h,v 1.5 2004/01/12 10:25:06 scw 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 * $FreeBSD$
38 *
39 */
40
41#ifndef _I80321_INTR_H_
42#define _I80321_INTR_H_
43
44#define	ARM_IRQ_HANDLER	_C_LABEL(i80321_intr_dispatch)
45
46#ifndef _LOCORE
47
48#include <machine/armreg.h>
49#include <machine/cpufunc.h>
50
51#include <arm/xscale/i80321/i80321reg.h>
52
53void i80321_do_pending(void);
54
55extern __volatile uint32_t intr_enabled;
56extern uint32_t intr_steer;
57
58static __inline void __attribute__((__unused__))
59i80321_set_intrmask(void)
60{
61
62	__asm __volatile("mcr p6, 0, %0, c0, c0, 0"
63		:
64		: "r" (intr_enabled & ICU_INT_HWMASK));
65}
66
67static __inline void
68i80321_set_intrsteer(void)
69{
70
71	__asm __volatile("mcr p6, 0, %0, c4, c0, 0"
72	    :
73	    : "r" (intr_steer & ICU_INT_HWMASK));
74}
75
76#if defined ( CPU_XSCALE_80219 )
77#define INT_SWMASK														\
78	((1U << ICU_INT_bit26) |											\
79	 (1U << ICU_INT_bit25) |											\
80	 (1U << ICU_INT_bit23) |											\
81	 (1U << ICU_INT_bit22) |											\
82	 (1U << ICU_INT_bit7)  |											\
83	 (1U << ICU_INT_bit6)  |											\
84	 (1U << ICU_INT_bit5)  |											\
85	 (1U << ICU_INT_bit4))
86#else
87#define INT_SWMASK                                                      \
88        ((1U << ICU_INT_bit26) | (1U << ICU_INT_bit22) |                \
89         (1U << ICU_INT_bit5)  | (1U << ICU_INT_bit4))
90#endif
91
92#if 0
93static __inline void __attribute__((__unused__))
94i80321_splx(int new)
95{
96	extern __volatile uint32_t intr_enabled;
97	extern __volatile int current_spl_level;
98	extern __volatile int i80321_ipending;
99	extern void i80321_do_pending(void);
100	int oldirqstate, hwpend;
101
102	/* Don't let the compiler re-order this code with preceding code */
103	__insn_barrier();
104
105	current_spl_level = new;
106
107	hwpend = (i80321_ipending & ICU_INT_HWMASK) & ~new;
108	if (hwpend != 0) {
109		oldirqstate = disable_interrupts(I32_bit);
110		intr_enabled |= hwpend;
111		i80321_set_intrmask();
112		restore_interrupts(oldirqstate);
113	}
114
115	if ((i80321_ipending & INT_SWMASK) & ~new)
116		i80321_do_pending();
117}
118
119static __inline int __attribute__((__unused__))
120i80321_splraise(int ipl)
121{
122	extern __volatile int current_spl_level;
123	extern int i80321_imask[];
124	int	old;
125
126	old = current_spl_level;
127	current_spl_level |= i80321_imask[ipl];
128
129	/* Don't let the compiler re-order this code with subsequent code */
130	__insn_barrier();
131
132	return (old);
133}
134
135static __inline int __attribute__((__unused__))
136i80321_spllower(int ipl)
137{
138	extern __volatile int current_spl_level;
139	extern int i80321_imask[];
140	int old = current_spl_level;
141
142	i80321_splx(i80321_imask[ipl]);
143	return(old);
144}
145
146#endif
147#if !defined(EVBARM_SPL_NOINLINE)
148
149#define splx(new)		i80321_splx(new)
150#define	_spllower(ipl)		i80321_spllower(ipl)
151#define	_splraise(ipl)		i80321_splraise(ipl)
152void	_setsoftintr(int);
153
154#else
155
156int	_splraise(int);
157int	_spllower(int);
158void	splx(int);
159void	_setsoftintr(int);
160
161#endif /* ! EVBARM_SPL_NOINLINE */
162
163#endif /* _LOCORE */
164
165#endif /* _I80321_INTR_H_ */
166