1 /* $NetBSD: pxa2x0_intr.h,v 1.16 2023/07/13 19:42:24 riastradh Exp $ */
2
3 /* Derived from i80321_intr.h */
4
5 /*
6 * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
7 * All rights reserved.
8 *
9 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed for the NetBSD Project by
22 * Wasabi Systems, Inc.
23 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
24 * or promote products derived from this software without specific prior
25 * written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 #ifndef _PXA2X0_INTR_H_
41 #define _PXA2X0_INTR_H_
42
43 #define ARM_IRQ_HANDLER _C_LABEL(pxa2x0_irq_handler)
44
45 #ifndef _LOCORE
46
47 #include <arm/cpu.h>
48 #include <arm/armreg.h>
49 #include <arm/cpufunc.h>
50 #include <machine/intr.h>
51
52 #include <arm/xscale/pxa2x0reg.h>
53
54 extern vaddr_t pxaic_base; /* Shared with pxa2x0_irq.S */
55 #define read_icu(offset) (*(volatile uint32_t *)(pxaic_base + (offset)))
56 #define write_icu(offset,value) \
57 (*(volatile uint32_t *)(pxaic_base + (offset)) = (value))
58
59 extern volatile int intr_mask;
60 extern int pxa2x0_imask[];
61
62
63 /*
64 * Cotulla's integrated ICU doesn't have IRQ0..7, so
65 * we map software interrupts to bit 0..3
66 */
67 static inline void
pxa2x0_setipl(int new)68 pxa2x0_setipl(int new)
69 {
70 set_curcpl(new);
71 intr_mask = pxa2x0_imask[new];
72 write_icu(SAIPIC_MR, intr_mask);
73 }
74
75
76 static inline void
pxa2x0_splx(int new)77 pxa2x0_splx(int new)
78 {
79 int psw;
80
81 psw = disable_interrupts(I32_bit);
82 pxa2x0_setipl(new);
83 restore_interrupts(psw);
84
85 #ifdef __HAVE_FAST_SOFTINTS
86 cpu_dosoftints();
87 #endif
88 }
89
90
91 static inline int
pxa2x0_splraise(int ipl)92 pxa2x0_splraise(int ipl)
93 {
94 int old, psw;
95
96 old = curcpl();
97 if (ipl > old) {
98 psw = disable_interrupts(I32_bit);
99 pxa2x0_setipl(ipl);
100 restore_interrupts(psw);
101 }
102
103 return old;
104 }
105
106 static inline int
pxa2x0_spllower(int ipl)107 pxa2x0_spllower(int ipl)
108 {
109 int old = curcpl();
110 int psw = disable_interrupts(I32_bit);
111
112 pxa2x0_splx(ipl);
113 restore_interrupts(psw);
114 return old;
115 }
116
117 int _splraise(int);
118 int _spllower(int);
119 void splx(int);
120
121 #if !defined(EVBARM_SPL_NOINLINE)
122
123 #define splx(new) pxa2x0_splx(new)
124 #define _spllower(ipl) pxa2x0_spllower(ipl)
125 #define _splraise(ipl) pxa2x0_splraise(ipl)
126
127 #endif /* !EVBARM_SPL_NOINTR */
128
129 /*
130 * This function *MUST* be called very early on in a port's
131 * initarm() function, before ANY spl*() functions are called.
132 *
133 * The parameter is the virtual address of the PXA2x0's Interrupt
134 * Controller registers.
135 */
136 void pxa2x0_intr_bootstrap(vaddr_t);
137
138 void pxa2x0_irq_handler(void *);
139 void *pxa2x0_intr_establish(int irqno, int level,
140 int (*func)(void *), void *cookie);
141 void pxa2x0_intr_disestablish(void *cookie);
142 void pxa2x0_update_intr_masks(int irqno, int level);
143
144 #endif /* ! _LOCORE */
145
146 #endif /* _PXA2X0_INTR_H_ */
147