Subversion Repositories HelenOS-historic

Rev

Rev 1730 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1004 decky 1 
/*
2 
 * Copyright (C) 2006 Martin Decky
3 
 * All rights reserved.
4 
 *
5 
 * Redistribution and use in source and binary forms, with or without
6 
 * modification, are permitted provided that the following conditions
7 
 * are met:
8 
 *
9 
 * - Redistributions of source code must retain the above copyright
10 
 *   notice, this list of conditions and the following disclaimer.
11 
 * - Redistributions in binary form must reproduce the above copyright
12 
 *   notice, this list of conditions and the following disclaimer in the
13 
 *   documentation and/or other materials provided with the distribution.
14 
 * - The name of the author may not be used to endorse or promote products
15 
 *   derived from this software without specific prior written permission.
16 
 *
17 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
 */
28 
 
1730 decky 29 
/** @addtogroup ppc32interrupt
1702 cejka 30 
 * @{
31 
 */
32 
/** @file
33 
 */
34 
 
1004 decky 35 
#include <interrupt.h>
36 
#include <arch/interrupt.h>
37 
#include <arch/types.h>
38 
#include <arch.h>
39 
#include <time/clock.h>
1265 jermar 40 
#include <ipc/sysipc.h>
1480 palkovsky 41 
#include <arch/drivers/pic.h>
1730 decky 42 
#include <arch/mm/tlb.h>
1004 decky 43 
 
1267 decky 44 
 
1007 decky 45 
void start_decrementer(void)
46 
{
47 
    asm volatile (
48 
        "mtdec %0\n"
1268 decky 49 
        :
50 
        : "r" (1000)
1007 decky 51 
    );
52 
}
53 
 
54 
 
1609 decky 55 
/** Handler of external interrupts */
56 
static void exception_external(int n, istate_t *istate)
57 
{
58 
    int inum;
59 
 
60 
    while ((inum = pic_get_pending()) != -1) {
61 
        exc_dispatch(inum + INT_OFFSET, istate);
62 
        pic_ack_interrupt(inum);
63 
    }
64 
}
65 
 
66 
 
1004 decky 67 
static void exception_decrementer(int n, istate_t *istate)
68 
{
69 
    clock();
1007 decky 70 
    start_decrementer();
1004 decky 71 
}
72 
 
73 
 
74 
/* Initialize basic tables for exception dispatching */
75 
void interrupt_init(void)
76 
{
1609 decky 77 
    exc_register(VECTOR_DATA_STORAGE, "data_storage", pht_refill);
78 
    exc_register(VECTOR_INSTRUCTION_STORAGE, "instruction_storage", pht_refill);
79 
    exc_register(VECTOR_EXTERNAL, "external", exception_external);
1004 decky 80 
    exc_register(VECTOR_DECREMENTER, "timer", exception_decrementer);
81 
}
1265 jermar 82 
 
1268 decky 83 
 
1609 decky 84 
static void ipc_int(int n, istate_t *istate)
1265 jermar 85 
{
1609 decky 86 
    ipc_irq_send_notif(n - INT_OFFSET);
1265 jermar 87 
}
1480 palkovsky 88 
 
1609 decky 89 
 
90 
/* Reregister irq to be IPC-ready */
1780 jermar 91 
void irq_ipc_bind_arch(unative_t irq)
1480 palkovsky 92 
{
1609 decky 93 
    int_register(irq, "ipc_int", ipc_int);
1480 palkovsky 94 
}
1702 cejka 95 
 
1730 decky 96 
/** @}
1702 cejka 97 
 */