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Line 49... Line 49...
49
#include <proc/thread.h>
49
#include <proc/thread.h>
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#include <proc/task.h>
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#include <proc/task.h>
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#include <synch/spinlock.h>
51
#include <synch/spinlock.h>
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#include <arch/ddi/ddi.h>
52
#include <arch/ddi/ddi.h>
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#include <interrupt.h>
53
#include <interrupt.h>
54
#include <ipc/irq.h>
54
#include <ddi/irq.h>
55
 
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
 
56
void print_info_errcode(int n, istate_t *istate)
64
void decode_istate(int n, istate_t *istate)
57
{
65
{
58
    char *symbol;
66
    char *symbol;
59
/*  uint64_t *x = &istate->stack[0]; */
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/*  uint64_t *x = &istate->stack[0]; */
60
 
68
 
61
    if (!(symbol=get_symtab_entry(istate->rip)))
69
    if (!(symbol=get_symtab_entry(istate->rip)))
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    printf("%%r15=%#llx, %%rbx=%#llx, %%rbp=%#llx\n", istate->r15, istate->rbx, &istate->rbp);
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    printf("%%r15=%#llx, %%rbx=%#llx, %%rbp=%#llx\n", istate->r15, istate->rbx, &istate->rbp);
74
#endif
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#endif
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    printf("%%rsp=%#llx\n", &istate->stack[0]);
83
    printf("%%rsp=%#llx\n", &istate->stack[0]);
76
}
84
}
77
 
85
 
-
 
86
static void trap_virtual_eoi(void)
78
/*
87
{
79
 * Interrupt and exception dispatching.
88
    if (eoi_function)
-
 
89
        eoi_function();
80
 */
90
    else
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91
        panic("no eoi_function\n");
81
 
92
 
82
void (* disable_irqs_function)(uint16_t irqmask) = NULL;
-
 
83
void (* enable_irqs_function)(uint16_t irqmask) = NULL;
-
 
84
void (* eoi_function)(void) = NULL;
-
 
-
 
93
}
85
 
94
 
86
void null_interrupt(int n, istate_t *istate)
95
static void null_interrupt(int n, istate_t *istate)
87
{
96
{
88
    fault_if_from_uspace(istate, "unserviced interrupt: %d", n);
97
    fault_if_from_uspace(istate, "unserviced interrupt: %d", n);
89
    print_info_errcode(n, istate);
98
    decode_istate(n, istate);
90
    panic("unserviced interrupt\n");
99
    panic("unserviced interrupt\n");
91
}
100
}
92
 
101
 
93
/** General Protection Fault. */
102
/** General Protection Fault. */
94
void gp_fault(int n, istate_t *istate)
103
static void gp_fault(int n, istate_t *istate)
95
{
104
{
96
    if (TASK) {
105
    if (TASK) {
97
        count_t ver;
106
        count_t ver;
98
 
107
 
99
        spinlock_lock(&TASK->lock);
108
        spinlock_lock(&TASK->lock);
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            return;
121
            return;
113
        }
122
        }
114
        fault_if_from_uspace(istate, "general protection fault");
123
        fault_if_from_uspace(istate, "general protection fault");
115
    }
124
    }
116
 
125
 
117
    print_info_errcode(n, istate);
126
    decode_istate(n, istate);
118
    panic("general protection fault\n");
127
    panic("general protection fault\n");
119
}
128
}
120
 
129
 
121
void ss_fault(int n, istate_t *istate)
130
static void ss_fault(int n, istate_t *istate)
122
{
131
{
123
    fault_if_from_uspace(istate, "stack fault");
132
    fault_if_from_uspace(istate, "stack fault");
124
    print_info_errcode(n, istate);
133
    decode_istate(n, istate);
125
    panic("stack fault\n");
134
    panic("stack fault\n");
126
}
135
}
127
 
136
 
128
void nm_fault(int n, istate_t *istate)
137
static void nm_fault(int n, istate_t *istate)
129
{
138
{
130
#ifdef CONFIG_FPU_LAZY     
139
#ifdef CONFIG_FPU_LAZY     
131
    scheduler_fpu_lazy_request();
140
    scheduler_fpu_lazy_request();
132
#else
141
#else
133
    fault_if_from_uspace(istate, "fpu fault");
142
    fault_if_from_uspace(istate, "fpu fault");
134
    panic("fpu fault");
143
    panic("fpu fault");
135
#endif
144
#endif
136
}
145
}
137
 
146
 
138
void tlb_shootdown_ipi(int n, istate_t *istate)
147
static void tlb_shootdown_ipi(int n, istate_t *istate)
139
{
148
{
140
    trap_virtual_eoi();
149
    trap_virtual_eoi();
141
    tlb_shootdown_ipi_recv();
150
    tlb_shootdown_ipi_recv();
142
}
151
}
143
 
152
 
-
 
153
/** Handler of IRQ exceptions */
-
 
154
static void irq_interrupt(int n, istate_t *istate)
-
 
155
{
-
 
156
    ASSERT(n >= IVT_IRQBASE);
-
 
157
   
-
 
158
    int inum = n - IVT_IRQBASE;
-
 
159
    ASSERT(inum < IRQ_COUNT);
-
 
160
    ASSERT((inum != IRQ_PIC_SPUR) && (inum != IRQ_PIC1));
-
 
161
 
-
 
162
    irq_t *irq = irq_dispatch_and_lock(inum);
-
 
163
    if (irq) {
-
 
164
        /*
-
 
165
         * The IRQ handler was found.
-
 
166
         */
-
 
167
        irq->handler(irq, irq->arg);
-
 
168
        spinlock_unlock(&irq->lock);
-
 
169
    } else {
-
 
170
        /*
-
 
171
         * Spurious interrupt.
-
 
172
         */
-
 
173
#ifdef CONFIG_DEBUG
-
 
174
        printf("cpu%d: spurious interrupt (inum=%d)\n", CPU->id, inum);
-
 
175
#endif
-
 
176
    }
-
 
177
    trap_virtual_eoi();
-
 
178
}
-
 
179
 
-
 
180
void interrupt_init(void)
-
 
181
{
-
 
182
    int i;
-
 
183
   
-
 
184
    for (i = 0; i < IVT_ITEMS; i++)
-
 
185
        exc_register(i, "null", (iroutine) null_interrupt);
-
 
186
   
-
 
187
    for (i = 0; i < IRQ_COUNT; i++) {
-
 
188
        if ((i != IRQ_PIC_SPUR) && (i != IRQ_PIC1))
-
 
189
            exc_register(IVT_IRQBASE + i, "irq", (iroutine) irq_interrupt);
-
 
190
    }
-
 
191
   
-
 
192
    exc_register(7, "nm_fault", (iroutine) nm_fault);
-
 
193
    exc_register(12, "ss_fault", (iroutine) ss_fault);
-
 
194
    exc_register(13, "gp_fault", (iroutine) gp_fault);
-
 
195
    exc_register(14, "ident_mapper", (iroutine) ident_page_fault);
-
 
196
   
-
 
197
#ifdef CONFIG_SMP
-
 
198
    exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown", (iroutine) tlb_shootdown_ipi);
-
 
199
#endif
-
 
200
}
-
 
201
 
144
void trap_virtual_enable_irqs(uint16_t irqmask)
202
void trap_virtual_enable_irqs(uint16_t irqmask)
145
{
203
{
146
    if (enable_irqs_function)
204
    if (enable_irqs_function)
147
        enable_irqs_function(irqmask);
205
        enable_irqs_function(irqmask);
148
    else
206
    else
Line 155... Line 213...
155
        disable_irqs_function(irqmask);
213
        disable_irqs_function(irqmask);
156
    else
214
    else
157
        panic("no disable_irqs_function\n");
215
        panic("no disable_irqs_function\n");
158
}
216
}
159
 
217
 
160
void trap_virtual_eoi(void)
-
 
161
{
-
 
162
    if (eoi_function)
-
 
163
        eoi_function();
-
 
164
    else
-
 
165
        panic("no eoi_function\n");
-
 
166
 
-
 
167
}
-
 
168
 
-
 
169
/** @}
218
/** @}
170
 */
219
 */