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/*
* Copyright (c) 2005 Jakub Jermar
* Copyright (c) 2005 Jakub Vana
* 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.
*/
/** @addtogroup ia64interrupt
* @{
*/
/** @file
*/
#include <arch/interrupt.h>
#include <interrupt.h>
#include <ddi/irq.h>
#include <panic.h>
#include <print.h>
#include <symtab.h>
#include <debug.h>
#include <console/console.h>
#include <arch/types.h>
#include <arch/asm.h>
#include <arch/barrier.h>
#include <arch/register.h>
#include <arch.h>
#include <syscall/syscall.h>
#include <print.h>
#include <proc/scheduler.h>
#include <ipc/sysipc.h>
#include <ipc/irq.h>
#include <ipc/ipc.h>
#include <synch/spinlock.h>
#include <mm/tlb.h>
#define VECTORS_64_BUNDLE 20
#define VECTORS_16_BUNDLE 48
#define VECTORS_16_BUNDLE_START 0x5000
#define VECTOR_MAX 0x7f00
#define BUNDLE_SIZE 16
char *vector_names_64_bundle[VECTORS_64_BUNDLE] = {
"VHPT Translation vector",
"Instruction TLB vector",
"Data TLB vector",
"Alternate Instruction TLB vector",
"Alternate Data TLB vector",
"Data Nested TLB vector",
"Instruction Key Miss vector",
"Data Key Miss vector",
"Dirty-Bit vector",
"Instruction Access-Bit vector",
"Data Access-Bit vector"
"Break Instruction vector",
"External Interrupt vector"
"Reserved",
"Reserved",
"Reserved",
"Reserved",
"Reserved",
"Reserved",
"Reserved"
};
char *vector_names_16_bundle[VECTORS_16_BUNDLE] = {
"Page Not Present vector",
"Key Permission vector",
"Instruction Access rights vector",
"Data Access Rights vector",
"General Exception vector",
"Disabled FP-Register vector",
"NaT Consumption vector",
"Speculation vector",
"Reserved",
"Debug vector",
"Unaligned Reference vector",
"Unsupported Data Reference vector",
"Floating-point Fault vector",
"Floating-point Trap vector",
"Lower-Privilege Transfer Trap vector",
"Taken Branch Trap vector",
"Single Step Trap vector",
"Reserved",
"Reserved",
"Reserved",
"Reserved",
"Reserved",
"Reserved",
"Reserved",
"Reserved",
"IA-32 Exception vector",
"IA-32 Intercept vector",
"IA-32 Interrupt vector",
"Reserved",
"Reserved",
"Reserved"
};
static char *vector_to_string(uint16_t vector);
static void dump_interrupted_context(istate_t *istate);
char *vector_to_string(uint16_t vector)
{
ASSERT(vector <= VECTOR_MAX);
if (vector >= VECTORS_16_BUNDLE_START)
return vector_names_16_bundle[(vector -
VECTORS_16_BUNDLE_START) / (16 * BUNDLE_SIZE)];
else
return vector_names_64_bundle[vector / (64 * BUNDLE_SIZE)];
}
void dump_interrupted_context(istate_t *istate)
{
char *ifa, *iipa, *iip;
ifa = get_symtab_entry(istate->cr_ifa);
iipa = get_symtab_entry(istate->cr_iipa);
iip = get_symtab_entry(istate->cr_iip);
putchar('\n');
printf("Interrupted context dump:\n");
printf("ar.bsp=%p\tar.bspstore=%p\n", istate->ar_bsp,
istate->ar_bspstore);
printf("ar.rnat=%#018llx\tar.rsc=%#018llx\n", istate->ar_rnat,
istate->ar_rsc);
printf("ar.ifs=%#018llx\tar.pfs=%#018llx\n", istate->ar_ifs,
istate->ar_pfs);
printf("cr.isr=%#018llx\tcr.ipsr=%#018llx\t\n", istate->cr_isr.value,
istate->cr_ipsr);
printf("cr.iip=%#018llx, #%d\t(%s)\n", istate->cr_iip,
istate->cr_isr.ei, iip);
printf("cr.iipa=%#018llx\t(%s)\n", istate->cr_iipa, iipa);
printf("cr.ifa=%#018llx\t(%s)\n", istate->cr_ifa, ifa);
}
void general_exception(uint64_t vector, istate_t *istate)
{
char *desc = "";
switch (istate->cr_isr.ge_code) {
case GE_ILLEGALOP:
desc = "Illegal Operation fault";
break;
case GE_PRIVOP:
desc = "Privileged Operation fault";
break;
case GE_PRIVREG:
desc = "Privileged Register fault";
break;
case GE_RESREGFLD:
desc = "Reserved Register/Field fault";
break;
case GE_DISBLDISTRAN:
desc = "Disabled Instruction Set Transition fault";
break;
case GE_ILLEGALDEP:
desc = "Illegal Dependency fault";
break;
default:
desc = "unknown";
break;
}
fault_if_from_uspace(istate, "General Exception (%s)", desc);
dump_interrupted_context(istate);
panic("General Exception (%s)\n", desc);
}
void disabled_fp_register(uint64_t vector, istate_t *istate)
{
#ifdef CONFIG_FPU_LAZY
scheduler_fpu_lazy_request();
#else
fault_if_from_uspace(istate, "Interruption: %#hx (%s)",
(uint16_t) vector, vector_to_string(vector));
dump_interrupted_context(istate);
panic("Interruption: %#hx (%s)\n", (uint16_t) vector,
vector_to_string(vector));
#endif
}
void nop_handler(uint64_t vector, istate_t *istate)
{
}
/** Handle syscall. */
int break_instruction(uint64_t vector, istate_t *istate)
{
/*
* Move to next instruction after BREAK.
*/
if (istate->cr_ipsr.ri == 2) {
istate->cr_ipsr.ri = 0;
istate->cr_iip += 16;
} else {
istate->cr_ipsr.ri++;
}
return syscall_handler(istate->in0, istate->in1, istate->in2,
istate->in3, istate->in4, istate->in5, istate->in6);
}
void universal_handler(uint64_t vector, istate_t *istate)
{
fault_if_from_uspace(istate, "Interruption: %#hx (%s)\n",
(uint16_t) vector, vector_to_string(vector));
dump_interrupted_context(istate);
panic("Interruption: %#hx (%s)\n", (uint16_t) vector,
vector_to_string(vector));
}
static void end_of_local_irq(void)
{
asm volatile ("mov cr.eoi=r0;;");
}
void external_interrupt(uint64_t vector, istate_t *istate)
{
cr_ivr_t ivr;
irq_t *irq;
ivr.value = ivr_read();
srlz_d();
switch (ivr.vector) {
case INTERRUPT_SPURIOUS:
#ifdef CONFIG_DEBUG
printf("cpu%d: spurious interrupt\n", CPU->id);
#endif
break;
#ifdef CONFIG_SMP
case VECTOR_TLB_SHOOTDOWN_IPI:
tlb_shootdown_ipi_recv();
end_of_local_irq();
break;
#endif
case INTERRUPT_TIMER:
irq = irq_dispatch_and_lock(ivr.vector);
if (irq) {
irq->handler(irq, irq->arg);
spinlock_unlock(&irq->lock);
} else {
panic("\nUnhandled Internal Timer Interrupt (%d)\n",
ivr.vector);
}
break;
default:
irq = irq_dispatch_and_lock(ivr.vector);
if (irq) {
/*
* The IRQ handler was found.
*/
if (irq->preack) {
/* Send EOI before processing the interrupt */
end_of_local_irq();
}
irq->handler(irq, irq->arg);
if (!irq->preack)
end_of_local_irq();
spinlock_unlock(&irq->lock);
} else {
/*
* Unhandled interrupt.
*/
end_of_local_irq();
#ifdef CONFIG_DEBUG
printf("\nUnhandled External Interrupt Vector %d\n",
ivr.vector);
#endif
}
break;
}
}
/** @}
*/