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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [mips/] [vr41xx/] [common/] [int-handler.S] - Blame information for rev 1765

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/*
 * FILE NAME
 *      arch/mips/vr41xx/common/int-handler.S
 *
 * BRIEF MODULE DESCRIPTION
 *      Interrupt dispatcher for the NEC VR4100 series.
 *
 * Author: Yoichi Yuasa
 *         yyuasa@mvista.com or source@mvista.com
 *
 * Copyright 2001 MontaVista Software Inc.
 *
 *  This program is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License as published by the
 *  Free Software Foundation; either version 2 of the License, or (at your
 *  option) any later version.
 *
 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 *  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 *  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 *  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */
/*
 * Changes:
 *  MontaVista Software Inc.  or 
 *  - New creation, NEC VR4100 series are supported.
 *
 *  Yoichi Yuasa 
 *  - Coped with INTASSIGN of NEC VR4133.
 */
#include 
#include 
#include 
#include 
 
                .text
                .set    noreorder
 
                .align  5
                NESTED(vr41xx_handle_interrupt, PT_SIZE, ra)
                .set    noat
                SAVE_ALL
                CLI
                .set    at
                .set    noreorder
 
                /*
                 * Get the pending interrupts
                 */
                mfc0    t0, CP0_CAUSE
                mfc0    t1, CP0_STATUS
                andi    t0, 0xff00
                and     t0, t0, t1
 
                andi    t1, t0, CAUSEF_IP7      # MIPS timer interrupt
                bnez    t1, handle_irq
                li      a0, 7
 
                andi    t1, t0, 0x7800          # check for Int1-4
                beqz    t1, 1f
 
                andi    t1, t0, CAUSEF_IP3      # check for Int1
                bnez    t1, handle_int
                li      a0, 1
 
                andi    t1, t0, CAUSEF_IP4      # check for Int2
                bnez    t1, handle_int
                li      a0, 2
 
                andi    t1, t0, CAUSEF_IP5      # check for Int3
                bnez    t1, handle_int
                li      a0, 3
 
                andi    t1, t0, CAUSEF_IP6      # check for Int4
                bnez    t1, handle_int
                li      a0, 4
 
1:
                andi    t1, t0, CAUSEF_IP2      # check for Int0
                bnez    t1, handle_int
                li      a0, 0
 
                andi    t1, t0, CAUSEF_IP0      # check for IP0
                bnez    t1, handle_irq
                li      a0, 0
 
                andi    t1, t0, CAUSEF_IP1      # check for IP1
                bnez    t1, handle_irq
                li      a0, 1
 
                j       spurious_interrupt
                nop
 
handle_int:
                jal     irq_dispatch
                move    a1, sp
                j       ret_from_irq
                nop
 
handle_irq:
                jal     do_IRQ
                move    a1, sp
                j       ret_from_irq
                END(vr41xx_handle_interrupt)

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`* FILE NAME`
3			`* arch/mips/vr41xx/common/int-handler.S`
4			`*`
5			`* BRIEF MODULE DESCRIPTION`
6			`* Interrupt dispatcher for the NEC VR4100 series.`
7			`*`
8			`* Author: Yoichi Yuasa`
9			`* yyuasa@mvista.com or source@mvista.com`
10			`*`
11			`* Copyright 2001 MontaVista Software Inc.`
12			`*`
13			`* This program is free software; you can redistribute it and/or modify it`
14			`* under the terms of the GNU General Public License as published by the`
15			`* Free Software Foundation; either version 2 of the License, or (at your`
16			`* option) any later version.`
17			`*`
18			* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
19			`* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF`
20			`* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.`
21			`* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,`
22			`* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,`
23			`* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS`
24			`* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND`
25			`* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR`
26			`* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE`
27			`* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.`
28			`*`
29			`* You should have received a copy of the GNU General Public License along`
30			`* with this program; if not, write to the Free Software Foundation, Inc.,`
31			`* 675 Mass Ave, Cambridge, MA 02139, USA.`
32			`*/`
33			`/*`
34			`* Changes:`
35			`* MontaVista Software Inc. or`
36			`* - New creation, NEC VR4100 series are supported.`
37			`*`
38			`* Yoichi Yuasa`
39			`* - Coped with INTASSIGN of NEC VR4133.`
40			`*/`
41			`#include`
42			`#include`
43			`#include`
44			`#include`
45
46			`.text`
47			`.set noreorder`
48
49			`.align 5`
50			`NESTED(vr41xx_handle_interrupt, PT_SIZE, ra)`
51			`.set noat`
52			`SAVE_ALL`
53			`CLI`
54			`.set at`
55			`.set noreorder`
56
57			`/*`
58			`* Get the pending interrupts`
59			`*/`
60			`mfc0 t0, CP0_CAUSE`
61			`mfc0 t1, CP0_STATUS`
62			`andi t0, 0xff00`
63			`and t0, t0, t1`
64
65			`andi t1, t0, CAUSEF_IP7 # MIPS timer interrupt`
66			`bnez t1, handle_irq`
67			`li a0, 7`
68
69			`andi t1, t0, 0x7800 # check for Int1-4`
70			`beqz t1, 1f`
71
72			`andi t1, t0, CAUSEF_IP3 # check for Int1`
73			`bnez t1, handle_int`
74			`li a0, 1`
75
76			`andi t1, t0, CAUSEF_IP4 # check for Int2`
77			`bnez t1, handle_int`
78			`li a0, 2`
79
80			`andi t1, t0, CAUSEF_IP5 # check for Int3`
81			`bnez t1, handle_int`
82			`li a0, 3`
83
84			`andi t1, t0, CAUSEF_IP6 # check for Int4`
85			`bnez t1, handle_int`
86			`li a0, 4`
87
88			`1:`
89			`andi t1, t0, CAUSEF_IP2 # check for Int0`
90			`bnez t1, handle_int`
91			`li a0, 0`
92
93			`andi t1, t0, CAUSEF_IP0 # check for IP0`
94			`bnez t1, handle_irq`
95			`li a0, 0`
96
97			`andi t1, t0, CAUSEF_IP1 # check for IP1`
98			`bnez t1, handle_irq`
99			`li a0, 1`
100
101			`j spurious_interrupt`
102			`nop`
103
104			`handle_int:`
105			`jal irq_dispatch`
106			`move a1, sp`
107			`j ret_from_irq`
108			`nop`
109
110			`handle_irq:`
111			`jal do_IRQ`
112			`move a1, sp`
113			`j ret_from_irq`
114			`END(vr41xx_handle_interrupt)`

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [mips/] [vr41xx/] [common/] [int-handler.S] - Blame information for rev 1765