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1 jermar 1
/*
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * 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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#include <arch/interrupt.h>
712 decky 30
#include <syscall/syscall.h>
1 jermar 31
#include <print.h>
68 decky 32
#include <debug.h>
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#include <panic.h>
1477 decky 34
#include <arch/drivers/i8259.h>
1 jermar 35
#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>
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#include <mm/as.h>
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#include <arch.h>
268 palkovsky 41
#include <symtab.h>
391 jermar 42
#include <proc/thread.h>
1256 jermar 43
#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 <ipc/sysipc.h>
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#include <interrupt.h>
1 jermar 48
 
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/*
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 * Interrupt and exception dispatching.
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 */
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void (* disable_irqs_function)(__u16 irqmask) = NULL;
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void (* enable_irqs_function)(__u16 irqmask) = NULL;
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void (* eoi_function)(void) = NULL;
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1411 jermar 57
void PRINT_INFO_ERRCODE(istate_t *istate)
1008 jermar 58
{
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    char *symbol = get_symtab_entry(istate->eip);
268 palkovsky 60
 
1008 jermar 61
    if (!symbol)
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        symbol = "";
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    if (CPU)
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        printf("----------------EXCEPTION OCCURED (cpu%d)----------------\n", CPU->id);
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    else
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        printf("----------------EXCEPTION OCCURED----------------\n");
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1221 decky 69
    printf("%%eip: %#x (%s)\n",istate->eip,symbol);
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    printf("ERROR_WORD=%#x\n", istate->error_word);
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    printf("%%cs=%#x,flags=%#x\n", istate->cs, istate->eflags);
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    printf("%%eax=%#x, %%ecx=%#x, %%edx=%#x, %%esp=%#x\n",  istate->eax,istate->ecx,istate->edx,&istate->stack[0]);
1100 palkovsky 73
#ifdef CONFIG_DEBUG_ALLREGS
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    printf("%%esi=%#x, %%edi=%#x, %%ebp=%#x, %%ebx=%#x\n",  istate->esi,istate->edi,istate->ebp,istate->ebx);
1100 palkovsky 75
#endif
1221 decky 76
    printf("stack: %#x, %#x, %#x, %#x\n", istate->stack[0], istate->stack[1], istate->stack[2], istate->stack[3]);
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    printf("       %#x, %#x, %#x, %#x\n", istate->stack[4], istate->stack[5], istate->stack[6], istate->stack[7]);
1008 jermar 78
}
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958 jermar 80
void null_interrupt(int n, istate_t *istate)
1 jermar 81
{
1595 palkovsky 82
    fault_if_from_uspace(istate, "unserviced interrupt: %d", n);
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958 jermar 84
    PRINT_INFO_ERRCODE(istate);
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    panic("unserviced interrupt: %d\n", n);
1 jermar 86
}
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1256 jermar 88
/** General Protection Fault. */
958 jermar 89
void gp_fault(int n, istate_t *istate)
1 jermar 90
{
1256 jermar 91
    if (TASK) {
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        count_t ver;
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        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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        }
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        fault_if_from_uspace(istate, "general protection fault");
1256 jermar 110
    }
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958 jermar 112
    PRINT_INFO_ERRCODE(istate);
168 jermar 113
    panic("general protection fault\n");
1 jermar 114
}
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958 jermar 116
void ss_fault(int n, istate_t *istate)
84 vana 117
{
1595 palkovsky 118
    fault_if_from_uspace(istate, "stack fault");
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958 jermar 120
    PRINT_INFO_ERRCODE(istate);
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    panic("stack fault\n");
84 vana 122
}
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1019 vana 124
void simd_fp_exception(int n, istate_t *istate)
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{
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    __u32 mxcsr;
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    asm
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    (
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        "stmxcsr %0;\n"
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        :"=m"(mxcsr)
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    );
1595 palkovsky 132
    fault_if_from_uspace(istate, "SIMD FP exception(19), MXCSR: %#zX",
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                 (__native)mxcsr);
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    PRINT_INFO_ERRCODE(istate);
1196 cejka 136
    printf("MXCSR: %#zX\n",(__native)(mxcsr));
1019 vana 137
    panic("SIMD FP exception(19)\n");
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}
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958 jermar 140
void nm_fault(int n, istate_t *istate)
73 vana 141
{
458 decky 142
#ifdef CONFIG_FPU_LAZY     
309 palkovsky 143
    scheduler_fpu_lazy_request();
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#else
1595 palkovsky 145
    fault_if_from_uspace(istate, "fpu fault");
309 palkovsky 146
    panic("fpu fault");
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#endif
73 vana 148
}
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958 jermar 150
void syscall(int n, istate_t *istate)
1 jermar 151
{
1100 palkovsky 152
    panic("Obsolete syscall handler.");
1 jermar 153
}
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958 jermar 155
void tlb_shootdown_ipi(int n, istate_t *istate)
5 jermar 156
{
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    trap_virtual_eoi();
6 jermar 158
    tlb_shootdown_ipi_recv();
5 jermar 159
}
160
 
1 jermar 161
void trap_virtual_enable_irqs(__u16 irqmask)
162
{
163
    if (enable_irqs_function)
164
        enable_irqs_function(irqmask);
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    else
68 decky 166
        panic("no enable_irqs_function\n");
1 jermar 167
}
168
 
169
void trap_virtual_disable_irqs(__u16 irqmask)
170
{
171
    if (disable_irqs_function)
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        disable_irqs_function(irqmask);
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    else
68 decky 174
        panic("no disable_irqs_function\n");
1 jermar 175
}
176
 
177
void trap_virtual_eoi(void)
178
{
179
    if (eoi_function)
180
        eoi_function();
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    else
68 decky 182
        panic("no eoi_function\n");
1 jermar 183
 
184
}
1258 palkovsky 185
 
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static void ipc_int(int n, istate_t *istate)
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{
188
    trap_virtual_eoi();
189
    ipc_irq_send_notif(n-IVT_IRQBASE);
190
}
191
 
192
 
193
/* Reregister irq to be IPC-ready */
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void irq_ipc_bind_arch(__native irq)
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{
196
    if (irq == IRQ_CLK)
197
        return;
198
    exc_register(IVT_IRQBASE+irq, "ipc_int", ipc_int);
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}