/*
* Copyright (C) 2001-2004 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <arch/interrupt.h>
#include <print.h>
#include <debug.h>
#include <panic.h>
#include <arch/drivers/i8259.h>
#include <func.h>
#include <cpu.h>
#include <arch/asm.h>
#include <mm/tlb.h>
#include <mm/as.h>
#include <arch.h>
#include <symtab.h>
#include <arch/asm.h>
#include <proc/scheduler.h>
#include <proc/thread.h>
#include <proc/task.h>
#include <synch/spinlock.h>
#include <arch/ddi/ddi.h>
#include <interrupt.h>
#include <ipc/irq.h>
void print_info_errcode(int n, istate_t *istate)
{
char *symbol;
/* __u64 *x = &istate->stack[0]; */
if (!(symbol=get_symtab_entry(istate->rip)))
symbol = "";
printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n
, __FUNCTION__
); printf("%%rip: %#llX (%s)\n",istate
->rip
, symbol
); printf("ERROR_WORD=%#llX\n", istate
->error_word
); printf("%%rcs=%#llX, flags=%#llX, %%cr0=%#llX\n", istate
->cs
, istate
->rflags
,read_cr0
()); printf("%%rax=%#llX, %%rcx=%#llX, %%rdx=%#llX\n",istate
->rax
,istate
->rcx
,istate
->rdx
); printf("%%rsi=%#llX, %%rdi=%#llX, %%r8 =%#llX\n",istate
->rsi
,istate
->rdi
,istate
->r8
); printf("%%r9 =%#llX, %%r10 =%#llX, %%r11=%#llX\n",istate
->r9
,istate
->r10
,istate
->r11
); #ifdef CONFIG_DEBUG_ALLREGS
printf("%%r12=%#llX, %%r13=%#llX, %%r14=%#llX\n",istate
->r12
,istate
->r13
,istate
->r14
); printf("%%r15=%#llX, %%rbx=%#llX, %%rbp=%#llX\n",istate
->r15
,istate
->rbx
,&istate
->rbp
); #endif
printf("%%rsp=%#llX\n",&istate
->stack
[0]); }
/*
* Interrupt and exception dispatching.
*/
void (* disable_irqs_function)(__u16 irqmask) = NULL;
void (* enable_irqs_function)(__u16 irqmask) = NULL;
void (* eoi_function)(void) = NULL;
void null_interrupt(int n, istate_t *istate)
{
fault_if_from_uspace(istate, "unserviced interrupt: %d", n);
print_info_errcode(n, istate);
panic("unserviced interrupt\n");
}
/** General Protection Fault. */
void gp_fault(int n, istate_t *istate)
{
if (TASK) {
count_t ver;
spinlock_lock(&TASK->lock);
ver = TASK->arch.iomapver;
spinlock_unlock(&TASK->lock);
if (CPU->arch.iomapver_copy != ver) {
/*
* This fault can be caused by an early access
* to I/O port because of an out-dated
* I/O Permission bitmap installed on CPU.
* Install the fresh copy and restart
* the instruction.
*/
io_perm_bitmap_install();
return;
}
fault_if_from_uspace(istate, "general protection fault");
}
print_info_errcode(n, istate);
panic("general protection fault\n");
}
void ss_fault(int n, istate_t *istate)
{
fault_if_from_uspace(istate, "stack fault");
print_info_errcode(n, istate);
panic("stack fault\n");
}
void nm_fault(int n, istate_t *istate)
{
#ifdef CONFIG_FPU_LAZY
scheduler_fpu_lazy_request();
#else
fault_if_from_uspace(istate, "fpu fault");
panic("fpu fault");
#endif
}
void tlb_shootdown_ipi(int n, istate_t *istate)
{
trap_virtual_eoi();
tlb_shootdown_ipi_recv();
}
void trap_virtual_enable_irqs(__u16 irqmask)
{
if (enable_irqs_function)
enable_irqs_function(irqmask);
else
panic("no enable_irqs_function\n");
}
void trap_virtual_disable_irqs(__u16 irqmask)
{
if (disable_irqs_function)
disable_irqs_function(irqmask);
else
panic("no disable_irqs_function\n");
}
void trap_virtual_eoi(void)
{
if (eoi_function)
eoi_function();
else
panic("no eoi_function\n");
}
static void ipc_int(int n, istate_t *istate)
{
trap_virtual_eoi();
ipc_irq_send_notif(n-IVT_IRQBASE);
}
/* Reregister irq to be IPC-ready */
void irq_ipc_bind_arch(__native irq)
{
if (irq == IRQ_CLK)
return;
exc_register(IVT_IRQBASE+irq, "ipc_int", ipc_int);
}