Subversion Repositories HelenOS

Rev

Rev 3790 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
664 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2005 Jakub Jermar
664 jermar 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
 
1705 cejka 29
/** @addtogroup sparc64interrupt
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
664 jermar 35
#include <arch/interrupt.h>
2089 decky 36
#include <arch/sparc64.h>
1849 jermar 37
#include <arch/trap/interrupt.h>
664 jermar 38
#include <interrupt.h>
1920 jermar 39
#include <ddi/irq.h>
747 jermar 40
#include <arch/types.h>
664 jermar 41
#include <debug.h>
1849 jermar 42
#include <arch/asm.h>
43
#include <arch/barrier.h>
1875 jermar 44
#include <print.h>
1904 jermar 45
#include <arch.h>
46
#include <mm/tlb.h>
47
#include <config.h>
1922 jermar 48
#include <synch/spinlock.h>
1849 jermar 49
 
664 jermar 50
/** Register Interrupt Level Handler.
51
 *
52
 * @param n Interrupt Level (1 - 15).
53
 * @param name Short descriptive string.
54
 * @param f Handler.
55
 */
56
void interrupt_register(int n, const char *name, iroutine f)
57
{
58
    ASSERT(n >= IVT_FIRST && n <= IVT_ITEMS);
59
 
60
    exc_register(n - 1, name, f);
61
}
1265 jermar 62
 
1919 jermar 63
/** Process hardware interrupt.
64
 *
65
 * @param n Ignored.
66
 * @param istate Ignored.
67
 */
1861 jermar 68
void interrupt(int n, istate_t *istate)
1849 jermar 69
{
3672 jermar 70
    uint64_t status;
1849 jermar 71
    uint64_t intrcv;
72
    uint64_t data0;
3672 jermar 73
    status = asi_u64_read(ASI_INTR_DISPATCH_STATUS, 0);
74
    if (status & (!INTR_DISPATCH_STATUS_BUSY))
3790 svoboda 75
        panic("Interrupt Dispatch Status busy bit not set.");
1849 jermar 76
 
77
    intrcv = asi_u64_read(ASI_INTR_RECEIVE, 0);
3672 jermar 78
#if defined (US)
79
    data0 = asi_u64_read(ASI_INTR_R, ASI_UDB_INTR_R_DATA_0);
80
#elif defined (US3)
81
    data0 = asi_u64_read(ASI_INTR_R, VA_INTR_R_DATA_0);
82
#endif
1849 jermar 83
 
1922 jermar 84
    irq_t *irq = irq_dispatch_and_lock(data0);
1919 jermar 85
    if (irq) {
1849 jermar 86
        /*
1919 jermar 87
         * The IRQ handler was found.
1849 jermar 88
         */
3906 jermar 89
        irq->handler(irq);
3655 jermar 90
        /*
91
         * See if there is a clear-interrupt-routine and call it.
92
         */
93
        if (irq->cir) {
94
            irq->cir(irq->cir_arg, irq->inr);
95
        }
1922 jermar 96
        spinlock_unlock(&irq->lock);
1919 jermar 97
    } else if (data0 > config.base) {
98
        /*
99
         * This is a cross-call.
2134 jermar 100
         * data0 contains address of the kernel function.
1919 jermar 101
         * We call the function only after we verify
2134 jermar 102
         * it is one of the supported ones.
1919 jermar 103
         */
1904 jermar 104
#ifdef CONFIG_SMP
1919 jermar 105
        if (data0 == (uintptr_t) tlb_shootdown_ipi_recv) {
106
            tlb_shootdown_ipi_recv();
107
        }
1904 jermar 108
#endif
1919 jermar 109
    } else {
110
        /*
111
         * Spurious interrupt.
112
         */
113
#ifdef CONFIG_DEBUG
3071 decky 114
        printf("cpu%u: spurious interrupt (intrcv=%#" PRIx64
3655 jermar 115
            ", data0=%#" PRIx64 ")\n", CPU->id, intrcv, data0);
1919 jermar 116
#endif
1849 jermar 117
    }
118
 
119
    membar();
120
    asi_u64_write(ASI_INTR_RECEIVE, 0, 0);
121
}
122
 
1703 jermar 123
/** @}
1702 cejka 124
 */