Subversion Repositories HelenOS

Rev

Rev 2265 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2292 hudecek 1
/*
2
 * Copyright (c) 2001-2004 Jakub 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
 
29
/** @addtogroup ia32interrupt
30
 * @{
31
 */
32
/** @file
33
 */
34
 
35
#include <arch/interrupt.h>
36
#include <syscall/syscall.h>
37
#include <print.h>
38
#include <debug.h>
39
#include <panic.h>
40
#include <arch/drivers/i8259.h>
41
#include <func.h>
42
#include <cpu.h>
43
#include <arch/asm.h>
44
#include <mm/tlb.h>
45
#include <mm/as.h>
46
#include <arch.h>
47
#include <symtab.h>
48
#include <proc/thread.h>
49
#include <proc/task.h>
50
#include <synch/spinlock.h>
51
#include <arch/ddi/ddi.h>
52
#include <ipc/sysipc.h>
53
#include <interrupt.h>
54
#include <ddi/irq.h>
55
 
56
/*
57
 * Interrupt and exception dispatching.
58
 */
59
 
60
void (* disable_irqs_function)(uint16_t irqmask) = NULL;
61
void (* enable_irqs_function)(uint16_t irqmask) = NULL;
62
void (* eoi_function)(void) = NULL;
63
 
64
void decode_istate(istate_t *istate)
65
{
66
    char *symbol = get_symtab_entry(istate->eip);
67
 
68
    if (!symbol)
69
        symbol = "";
70
 
71
    if (CPU)
72
        printf("----------------EXCEPTION OCCURED (cpu%d)----------------\n", CPU->id);
73
    else
74
        printf("----------------EXCEPTION OCCURED----------------\n");
75
 
76
    printf("%%eip: %#x (%s)\n",istate->eip,symbol);
77
    printf("ERROR_WORD=%#x\n", istate->error_word);
78
    printf("%%cs=%#x,flags=%#x\n", istate->cs, istate->eflags);
79
    printf("%%eax=%#x, %%ecx=%#x, %%edx=%#x, %%esp=%#x\n",  istate->eax,istate->ecx,istate->edx,&istate->stack[0]);
80
#ifdef CONFIG_DEBUG_ALLREGS
81
    printf("%%esi=%#x, %%edi=%#x, %%ebp=%#x, %%ebx=%#x\n",  istate->esi,istate->edi,istate->ebp,istate->ebx);
82
#endif
83
    printf("stack: %#x, %#x, %#x, %#x\n", istate->stack[0], istate->stack[1], istate->stack[2], istate->stack[3]);
84
    printf("       %#x, %#x, %#x, %#x\n", istate->stack[4], istate->stack[5], istate->stack[6], istate->stack[7]);
85
}
86
 
87
static void trap_virtual_eoi(void)
88
{
89
    if (eoi_function)
90
        eoi_function();
91
    else
92
        panic("no eoi_function\n");
93
 
94
}
95
 
96
static void null_interrupt(int n, istate_t *istate)
97
{
98
    fault_if_from_uspace(istate, "unserviced interrupt: %d", n);
99
 
100
    decode_istate(istate);
101
    panic("unserviced interrupt: %d\n", n);
102
}
103
 
104
/** General Protection Fault. */
105
static void gp_fault(int n, istate_t *istate)
106
{
107
    if (TASK) {
108
        count_t ver;
109
 
110
        spinlock_lock(&TASK->lock);
111
        ver = TASK->arch.iomapver;
112
        spinlock_unlock(&TASK->lock);
113
 
114
        if (CPU->arch.iomapver_copy != ver) {
115
            /*
116
             * This fault can be caused by an early access
117
             * to I/O port because of an out-dated
118
             * I/O Permission bitmap installed on CPU.
119
             * Install the fresh copy and restart
120
             * the instruction.
121
             */
122
            io_perm_bitmap_install();
123
            return;
124
        }
125
        fault_if_from_uspace(istate, "general protection fault");
126
    }
127
 
128
    decode_istate(istate);
129
    panic("general protection fault\n");
130
}
131
 
132
static void ss_fault(int n, istate_t *istate)
133
{
134
    fault_if_from_uspace(istate, "stack fault");
135
 
136
    decode_istate(istate);
137
    panic("stack fault\n");
138
}
139
 
140
static void simd_fp_exception(int n, istate_t *istate)
141
{
142
    uint32_t mxcsr;
143
    asm (
144
        "stmxcsr %0;\n"
145
        :"=m"(mxcsr)
146
    );
147
    fault_if_from_uspace(istate, "SIMD FP exception(19), MXCSR: %#zx",
148
        (unative_t)mxcsr);
149
 
150
    decode_istate(istate);
151
    printf("MXCSR: %#zx\n",(unative_t)(mxcsr));
152
    panic("SIMD FP exception(19)\n");
153
}
154
 
155
static void nm_fault(int n, istate_t *istate)
156
{
157
#ifdef CONFIG_FPU_LAZY     
158
    scheduler_fpu_lazy_request();
159
#else
160
    fault_if_from_uspace(istate, "fpu fault");
161
    panic("fpu fault");
162
#endif
163
}
164
 
165
#ifdef CONFIG_SMP
166
static void tlb_shootdown_ipi(int n, istate_t *istate)
167
{
168
    trap_virtual_eoi();
169
    tlb_shootdown_ipi_recv();
170
}
171
#endif
172
 
173
/** Handler of IRQ exceptions */
174
static void irq_interrupt(int n, istate_t *istate)
175
{
176
    ASSERT(n >= IVT_IRQBASE);
177
 
178
    int inum = n - IVT_IRQBASE;
179
    ASSERT(inum < IRQ_COUNT);
180
    ASSERT((inum != IRQ_PIC_SPUR) && (inum != IRQ_PIC1));
181
 
182
    irq_t *irq = irq_dispatch_and_lock(inum);
183
    if (irq) {
184
        /*
185
         * The IRQ handler was found.
186
         */
187
        irq->handler(irq, irq->arg);
188
        spinlock_unlock(&irq->lock);
189
    } else {
190
        /*
191
         * Spurious interrupt.
192
         */
193
#ifdef CONFIG_DEBUG
194
        printf("cpu%d: spurious interrupt (inum=%d)\n", CPU->id, inum);
195
#endif
196
    }
197
    trap_virtual_eoi();
198
}
199
 
200
void interrupt_init(void)
201
{
202
    int i;
203
 
204
    for (i = 0; i < IVT_ITEMS; i++)
205
        exc_register(i, "null", (iroutine) null_interrupt);
206
 
207
    for (i = 0; i < IRQ_COUNT; i++) {
208
        if ((i != IRQ_PIC_SPUR) && (i != IRQ_PIC1))
209
            exc_register(IVT_IRQBASE + i, "irq", (iroutine) irq_interrupt);
210
    }
211
 
212
    exc_register(7, "nm_fault", (iroutine) nm_fault);
213
    exc_register(12, "ss_fault", (iroutine) ss_fault);
214
    exc_register(13, "gp_fault", (iroutine) gp_fault);
215
    exc_register(19, "simd_fp", (iroutine) simd_fp_exception);
216
 
217
#ifdef CONFIG_SMP
218
    exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown", (iroutine) tlb_shootdown_ipi);
219
#endif
220
}
221
 
222
void trap_virtual_enable_irqs(uint16_t irqmask)
223
{
224
    if (enable_irqs_function)
225
        enable_irqs_function(irqmask);
226
    else
227
        panic("no enable_irqs_function\n");
228
}
229
 
230
void trap_virtual_disable_irqs(uint16_t irqmask)
231
{
232
    if (disable_irqs_function)
233
        disable_irqs_function(irqmask);
234
    else
235
        panic("no disable_irqs_function\n");
236
}
237
 
238
/** @}
239
 */