4 * Copyright (c) 2002, 2003 Fujitsu Component Limited
5 * Copyright (c) 2002, 2003 Genetec Corporation
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of The Fujitsu Component Limited nor the name of
17 * Genetec corporation may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC
21 * CORPORATION ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
22 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED. IN NO EVENT SHALL FUJITSU COMPONENT LIMITED OR GENETEC
25 * CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
28 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
29 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * Common part of IRQ handlers for Samsung S3C2800/2400/2410 processors.
37 * derived from i80321_icu.c
41 * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
42 * All rights reserved.
44 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
46 * Redistribution and use in source and binary forms, with or without
47 * modification, are permitted provided that the following conditions
49 * 1. Redistributions of source code must retain the above copyright
50 * notice, this list of conditions and the following disclaimer.
51 * 2. Redistributions in binary form must reproduce the above copyright
52 * notice, this list of conditions and the following disclaimer in the
53 * documentation and/or other materials provided with the distribution.
54 * 3. All advertising materials mentioning features or use of this software
55 * must display the following acknowledgement:
56 * This product includes software developed for the NetBSD Project by
57 * Wasabi Systems, Inc.
58 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
59 * or promote products derived from this software without specific prior
62 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
64 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
65 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
66 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
67 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
68 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
69 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
70 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
71 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
72 * POSSIBILITY OF SUCH DAMAGE.
75 #include <sys/cdefs.h>
76 __KERNEL_RCSID(0, "$NetBSD$");
78 #include <sys/param.h>
79 #include <sys/systm.h>
80 #include <sys/malloc.h>
81 #include <uvm/uvm_extern.h>
82 #include <machine/bus.h>
83 #include <machine/intr.h>
84 #include <arm/cpufunc.h>
86 #include <arm/s3c2xx0/s3c2xx0reg.h>
87 #include <arm/s3c2xx0/s3c2xx0var.h>
89 volatile uint32_t *s3c2xx0_intr_mask_reg
;
99 * modify interrupt mask table for SPL levels
102 s3c2xx0_update_intr_masks(int irqno
, int level
)
104 int mask
= 1 << irqno
;
108 s3c2xx0_ilevel
[irqno
] = level
;
110 for (i
= 0; i
< level
; ++i
)
111 s3c2xx0_imask
[i
] |= mask
; /* Enable interrupt at lower
113 for (; i
< NIPL
- 1; ++i
)
114 s3c2xx0_imask
[i
] &= ~mask
; /* Disable interrupt at upper
118 * Enforce a hierarchy that gives "slow" device (or devices with
119 * limited input buffer space/"real-time" requirements) a better
120 * chance at not dropping data.
122 s3c2xx0_imask
[IPL_VM
] &= s3c2xx0_imask
[IPL_SOFTSERIAL
];
123 s3c2xx0_imask
[IPL_CLOCK
] &= s3c2xx0_imask
[IPL_VM
];
124 s3c2xx0_imask
[IPL_HIGH
] &= s3c2xx0_imask
[IPL_CLOCK
];
128 stray_interrupt(void *cookie
)
131 int irqno
= (int) cookie
;
132 printf("stray interrupt %d\n", irqno
);
134 save
= disable_interrupts(I32_bit
);
135 *s3c2xx0_intr_mask_reg
&= ~(1U << irqno
);
136 restore_interrupts(save
);
141 * Initialize interrupt dispatcher.
144 s3c2xx0_intr_init(struct s3c2xx0_intr_dispatch
* dispatch_table
, int icu_len
)
148 for (i
= 0; i
< icu_len
; ++i
) {
149 dispatch_table
[i
].func
= stray_interrupt
;
150 dispatch_table
[i
].cookie
= (void *) (i
);
151 dispatch_table
[i
].level
= IPL_VM
;
154 global_intr_mask
= ~0; /* no intr is globally blocked. */
157 enable_interrupts(I32_bit
);
161 * initialize variables so that splfoo() doesn't touch illegal address.
162 * called during bootstrap.
165 s3c2xx0_intr_bootstrap(vaddr_t icureg
)
167 s3c2xx0_intr_mask_reg
= (volatile uint32_t *)(icureg
+ INTCTL_INTMSK
);
183 return s3c2xx0_splraise(ipl
);
190 return s3c2xx0_spllower(ipl
);