4 * Copyright (c) 2002 Fujitsu Component Limited
5 * Copyright (c) 2002 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 * Copyright (c) 2002, 2003 Wasabi Systems, Inc.
37 * All rights reserved.
39 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. All advertising materials mentioning features or use of this software
50 * must display the following acknowledgement:
51 * This product includes software developed for the NetBSD Project by
52 * Wasabi Systems, Inc.
53 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
54 * or promote products derived from this software without specific prior
57 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
59 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
60 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
61 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
62 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
63 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
64 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
65 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
66 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
67 * POSSIBILITY OF SUCH DAMAGE.
72 #include <machine/asm.h>
73 #include <machine/cpu.h>
74 #include <machine/frame.h>
76 #include "opt_arm_intr_impl.h"
78 #include ARM_INTR_IMPL
80 #error ARM_INTR_IMPL not defined
83 #ifndef ARM_IRQ_HANDLER
84 #error ARM_IRQ_HANDLER not defined
89 * Main entry point for the IRQ vector. This is a generic version
90 * which can be used by different platforms.
95 .word _C_LABEL(cpu_info_store) + CI_INTR_DEPTH
99 AST_ALIGNMENT_FAULT_LOCALS
101 ASENTRY_NP(irq_entry)
102 sub lr, lr, #0x00000004 /* Adjust the lr */
104 PUSHFRAMEINSVC /* Push an interrupt frame */
105 ENABLE_ALIGNMENT_FAULTS /* finishes with curcpu() in r4 */
108 * Increment the interrupt nesting depth and call the interrupt
109 * dispatch routine. We've pushed a frame, so we can safely use
110 * callee-saved regs here. We use the following registers, which
111 * we expect to presist:
113 * r4 address of current cpu_info
114 * r6 old value of `ci_intr_depth'
116 mov r0, sp /* arg for dispatcher */
117 ldr r6, [r4, #CI_INTR_DEPTH]
119 str r1, [r4, #CI_INTR_DEPTH]
124 * Restore the old interrupt depth value (which should be the
125 * same as decrementing it at this point).
127 str r6, [r4, #CI_INTR_DEPTH]
131 DO_AST_AND_RESTORE_ALIGNMENT_FAULTS
132 PULLFRAMEFROMSVCANDEXIT
133 movs pc, lr /* Exit */