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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Interrupt Vector Table Configuration
*/
#include <sys/cpuvar.h>
#include <sys/ivintr.h>
#include <sys/intreg.h>
#include <sys/cmn_err.h>
#include <sys/privregs.h>
#include <sys/sunddi.h>
/*
* fill in an interrupt vector entry
*/
#define fill_intr(a, b, c, d, e) \
a->iv_pil = b; a->iv_pending = 0; \
a->iv_arg = d; a->iv_handler = c; a->iv_payload_buf = e;
/*
* create a null interrupt handler entry used for returned values
* only - never on intr_vector[]
*/
#define nullify_intr(v) fill_intr(v, 0, NULL, NULL, NULL)
/*
* replace an intr_vector[] entry with a default set of values
* this is done instead of nulling the entry, so the handler and
* pil are always valid for the assembler code
*/
#define empty_intr(v) fill_intr((v), PIL_MAX, nohandler, \
(void *)(v), NULL)
/*
* test whether an intr_vector[] entry points to our default handler
*/
#define intr_is_empty(v) ((v)->iv_handler == nohandler)
extern uint_t swinum_base;
extern uint_t maxswinum;
extern kmutex_t soft_iv_lock;
int ignore_invalid_vecintr = 0;
uint64_t invalid_vecintr_count = 0;
/*
* default (non-)handler for otherwise unhandled interrupts
*/
uint_t
nohandler(caddr_t ivptr)
{
if (!ignore_invalid_vecintr) {
ASSERT((struct intr_vector *)ivptr - intr_vector < MAXIVNUM);
return (DDI_INTR_UNCLAIMED);
} else {
invalid_vecintr_count++;
return (DDI_INTR_CLAIMED);
}
}
/*
* initialization - fill the entire table with default values
*/
void
init_ivintr(void)
{
struct intr_vector *inump;
int i;
for (inump = intr_vector, i = 0; i <= MAXIVNUM; ++inump, ++i) {
empty_intr(inump);
}
}
/*
* add_ivintr() - add an interrupt handler to the system
* This routine is not protected by the lock; it's the caller's
* responsibility to make sure <source>_INR.INT_EN = 0
* and <source>_ISM != PENDING before the routine is called.
*/
int
add_ivintr(uint_t inum, uint_t pil, intrfunc intr_handler,
caddr_t intr_arg, caddr_t intr_payload)
{
struct intr_vector *inump;
if (inum >= MAXIVNUM || pil > PIL_MAX)
return (EINVAL);
ASSERT((uintptr_t)intr_handler > KERNELBASE);
/* Make sure the payload buffer address is 64 bit aligned */
VERIFY(((uint64_t)intr_payload & 0x7) == 0);
inump = &intr_vector[inum];
if (inump->iv_handler != nohandler)
return (EINVAL);
fill_intr(inump, (ushort_t)pil, intr_handler, intr_arg, intr_payload);
return (0);
}
/*
* rem_ivintr() - remove an interrupt handler from intr_vector[]
* This routine is not protected by the lock; it's the caller's
* responsibility to make sure <source>_INR.INT_EN = 0
* and <source>_ISM != PENDING before the routine is called.
*/
void
rem_ivintr(uint_t inum, struct intr_vector *iv_return)
{
struct intr_vector *inump;
ASSERT(inum != NULL && inum < MAXIVNUM);
inump = &intr_vector[inum];
if (iv_return) {
if (intr_is_empty(inump)) {
nullify_intr(iv_return);
} else {
/*
* the caller requires the current entry to be
* returned
*/
fill_intr(iv_return, inump->iv_pil,
inump->iv_handler, inump->iv_arg,
inump->iv_payload_buf);
}
}
/*
* empty the current entry
*/
empty_intr(inump);
}
/*
* add_softintr() - add a software interrupt handler to the system
*/
uint_t
add_softintr(uint_t pil, softintrfunc intr_handler, caddr_t intr_arg)
{
struct intr_vector *inump;
register uint_t i;
mutex_enter(&soft_iv_lock);
for (i = swinum_base; i < maxswinum; i++) {
inump = &intr_vector[i];
if (intr_is_empty(inump))
break;
}
if (!intr_is_empty(inump)) {
cmn_err(CE_PANIC, "add_softintr: exceeded %d handlers",
maxswinum - swinum_base);
}
VERIFY(add_ivintr(i, pil, (intrfunc)intr_handler,
intr_arg, NULL) == 0);
mutex_exit(&soft_iv_lock);
return (i);
}
/*
* rem_softintr() - remove a software interrupt handler from the system
*/
void
rem_softintr(uint_t inum)
{
ASSERT(swinum_base <= inum && inum < MAXIVNUM);
mutex_enter(&soft_iv_lock);
rem_ivintr(inum, NULL);
mutex_exit(&soft_iv_lock);
}
int
update_softint_arg2(uint_t intr_id, caddr_t arg2)
{
struct intr_vector *inump = &intr_vector[intr_id];
if (inump->iv_pending)
return (DDI_EPENDING);
inump->iv_softint_arg2 = arg2;
return (DDI_SUCCESS);
}
int
update_softint_pri(uint_t intr_id, int pri)
{
struct intr_vector *inump = &intr_vector[intr_id];
mutex_enter(&soft_iv_lock);
inump->iv_pil = pri;
mutex_exit(&soft_iv_lock);
return (DDI_SUCCESS);
}
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