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226 palkovsky 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>
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#include <print.h>
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#include <debug.h>
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#include <panic.h>
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#include <arch/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>
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#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>
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#include <proc/thread.h>
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#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>
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#include <ipc/irq.h>
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1051 jermar 50
void print_info_errcode(int n, istate_t *istate)
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{
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    char *symbol;
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/*  __u64 *x = &istate->stack[0]; */
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    if (!(symbol=get_symtab_entry(istate->rip)))
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        symbol = "";
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    printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n, __FUNCTION__);
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    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);
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#ifdef CONFIG_DEBUG_ALLREGS 
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    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);
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#endif
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    printf("%%rsp=%#llX\n",&istate->stack[0]);
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}
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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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void null_interrupt(int n, istate_t *istate)
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{
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    print_info_errcode(n, istate);
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    panic("unserviced interrupt\n");
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}
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/** General Protection Fault. */
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void gp_fault(int n, istate_t *istate)
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{
1256 jermar 89
    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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    }
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958 jermar 109
    print_info_errcode(n, istate);
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    panic("general protection fault\n");
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}
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958 jermar 113
void ss_fault(int n, istate_t *istate)
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{
958 jermar 115
    print_info_errcode(n, istate);
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    panic("stack fault\n");
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}
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958 jermar 119
void nm_fault(int n, istate_t *istate)
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{
458 decky 121
#ifdef CONFIG_FPU_LAZY     
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    scheduler_fpu_lazy_request();
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#else
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    panic("fpu fault");
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#endif
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}
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958 jermar 128
void tlb_shootdown_ipi(int n, istate_t *istate)
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{
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    trap_virtual_eoi();
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    tlb_shootdown_ipi_recv();
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}
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void trap_virtual_enable_irqs(__u16 irqmask)
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{
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    if (enable_irqs_function)
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        enable_irqs_function(irqmask);
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    else
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        panic("no enable_irqs_function\n");
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}
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void trap_virtual_disable_irqs(__u16 irqmask)
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{
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    if (disable_irqs_function)
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        disable_irqs_function(irqmask);
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    else
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        panic("no disable_irqs_function\n");
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}
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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");
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}
1258 palkovsky 158
 
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static void ipc_int(int n, istate_t *istate)
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{
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    trap_virtual_eoi();
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    ipc_irq_send_notif(n-IVT_IRQBASE);
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}
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/* Reregister irq to be IPC-ready */
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void irq_ipc_bind_arch(__native irq)
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{
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    if (irq == IRQ_CLK)
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        return;
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    exc_register(IVT_IRQBASE+irq, "ipc_int", ipc_int);
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}