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226 palkovsky 1
/*
2071 jermar 2
 * Copyright (c) 2001-2004 Jakub Jermar
226 palkovsky 3
 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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1888 jermar 29
/** @addtogroup amd64interrupt
1702 cejka 30
 * @{
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 */
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/** @file
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 */
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226 palkovsky 35
#include <arch/interrupt.h>
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#include <print.h>
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#include <debug.h>
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#include <panic.h>
1477 decky 39
#include <arch/drivers/i8259.h>
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#include <func.h>
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#include <cpu.h>
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#include <arch/asm.h>
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#include <mm/tlb.h>
703 jermar 44
#include <mm/as.h>
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#include <arch.h>
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#include <symtab.h>
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#include <arch/asm.h>
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#include <proc/scheduler.h>
391 jermar 49
#include <proc/thread.h>
1256 jermar 50
#include <proc/task.h>
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#include <synch/spinlock.h>
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#include <arch/ddi/ddi.h>
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#include <interrupt.h>
1958 decky 54
#include <ddi/irq.h>
226 palkovsky 55
 
1958 decky 56
/*
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 * Interrupt and exception dispatching.
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 */
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void (* disable_irqs_function)(uint16_t irqmask) = NULL;
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void (* enable_irqs_function)(uint16_t irqmask) = NULL;
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void (* eoi_function)(void) = NULL;
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void decode_istate(int n, istate_t *istate)
297 palkovsky 65
{
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    char *symbol;
1780 jermar 67
/*  uint64_t *x = &istate->stack[0]; */
297 palkovsky 68
 
1021 jermar 69
    if (!(symbol=get_symtab_entry(istate->rip)))
286 palkovsky 70
        symbol = "";
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1021 jermar 72
    printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n, __FUNCTION__);
1735 decky 73
    printf("%%rip: %#llx (%s)\n",istate->rip, symbol);
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    printf("ERROR_WORD=%#llx\n", istate->error_word);
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    printf("%%rcs=%#llx, flags=%#llx, %%cr0=%#llx\n", istate->cs, istate->rflags, read_cr0());
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    printf("%%rax=%#llx, %%rcx=%#llx, %%rdx=%#llx\n", istate->rax, istate->rcx, istate->rdx);
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    printf("%%rsi=%#llx, %%rdi=%#llx, %%r8 =%#llx\n", istate->rsi, istate->rdi, istate->r8);
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    printf("%%r9 =%#llx, %%r10 =%#llx, %%r11=%#llx\n", istate->r9, istate->r10, istate->r11);
1100 palkovsky 79
#ifdef CONFIG_DEBUG_ALLREGS 
1735 decky 80
    printf("%%r12=%#llx, %%r13=%#llx, %%r14=%#llx\n", istate->r12, istate->r13, istate->r14);
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    printf("%%r15=%#llx, %%rbx=%#llx, %%rbp=%#llx\n", istate->r15, istate->rbx, &istate->rbp);
1100 palkovsky 82
#endif
1735 decky 83
    printf("%%rsp=%#llx\n", &istate->stack[0]);
286 palkovsky 84
}
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1958 decky 86
static void trap_virtual_eoi(void)
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{
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    if (eoi_function)
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        eoi_function();
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    else
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        panic("no eoi_function\n");
226 palkovsky 92
 
1958 decky 93
}
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1958 decky 95
static void null_interrupt(int n, istate_t *istate)
226 palkovsky 96
{
1595 palkovsky 97
    fault_if_from_uspace(istate, "unserviced interrupt: %d", n);
1958 decky 98
    decode_istate(n, istate);
226 palkovsky 99
    panic("unserviced interrupt\n");
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}
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1256 jermar 102
/** General Protection Fault. */
1958 decky 103
static void gp_fault(int n, istate_t *istate)
226 palkovsky 104
{
1256 jermar 105
    if (TASK) {
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        count_t ver;
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108
        spinlock_lock(&TASK->lock);
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        ver = TASK->arch.iomapver;
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        spinlock_unlock(&TASK->lock);
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        if (CPU->arch.iomapver_copy != ver) {
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            /*
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             * This fault can be caused by an early access
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             * to I/O port because of an out-dated
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             * I/O Permission bitmap installed on CPU.
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             * Install the fresh copy and restart
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             * the instruction.
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             */
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            io_perm_bitmap_install();
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            return;
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        }
1595 palkovsky 123
        fault_if_from_uspace(istate, "general protection fault");
1256 jermar 124
    }
125
 
1958 decky 126
    decode_istate(n, istate);
226 palkovsky 127
    panic("general protection fault\n");
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}
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1958 decky 130
static void ss_fault(int n, istate_t *istate)
226 palkovsky 131
{
1595 palkovsky 132
    fault_if_from_uspace(istate, "stack fault");
1958 decky 133
    decode_istate(n, istate);
226 palkovsky 134
    panic("stack fault\n");
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}
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1958 decky 137
static void nm_fault(int n, istate_t *istate)
226 palkovsky 138
{
458 decky 139
#ifdef CONFIG_FPU_LAZY     
309 palkovsky 140
    scheduler_fpu_lazy_request();
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#else
1595 palkovsky 142
    fault_if_from_uspace(istate, "fpu fault");
309 palkovsky 143
    panic("fpu fault");
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#endif
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}
146
 
1958 decky 147
static void tlb_shootdown_ipi(int n, istate_t *istate)
226 palkovsky 148
{
149
    trap_virtual_eoi();
150
    tlb_shootdown_ipi_recv();
151
}
152
 
1958 decky 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))
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            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
 
1780 jermar 202
void trap_virtual_enable_irqs(uint16_t irqmask)
226 palkovsky 203
{
204
    if (enable_irqs_function)
205
        enable_irqs_function(irqmask);
206
    else
207
        panic("no enable_irqs_function\n");
208
}
209
 
1780 jermar 210
void trap_virtual_disable_irqs(uint16_t irqmask)
226 palkovsky 211
{
212
    if (disable_irqs_function)
213
        disable_irqs_function(irqmask);
214
    else
215
        panic("no disable_irqs_function\n");
216
}
217
 
1888 jermar 218
/** @}
1702 cejka 219
 */