2b3ad18853
The ci20 port (by kan@) is going to reuse almost all of the intrng code since the SoC in question looks suspiciously like someone took an ARM SoC design and replaced the ARM core with a MIPS core. * migrate out the code; * rename ARM_ -> INTR_; * rename arm_ -> intr_; * move the interrupt flush routine from intr.c / intrng.c into arm/machdep_intr.c - removing the code duplication and removing the ARM specific bits from here. Thanks to the Star Wars: The Force Awakens premiere line for allowing me a couple hours of quiet time to finish the universe builds. Tested: * make universe TODO: * The structure definitions in subr_intr.c still includes machine/intr.h which requires one duplicates all of the intrng definitions in the platform code (which kan has done, and I think we don't have to.) Instead I should break out the generic things (function declarations, common intr structures, etc) into a separate header. * Kan has requested I make the PIC based IPI stuff optional.
202 lines
5.5 KiB
C
202 lines
5.5 KiB
C
/* $NetBSD: intr.c,v 1.12 2003/07/15 00:24:41 lukem Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2004 Olivier Houchard.
|
|
* Copyright (c) 1994-1998 Mark Brinicombe.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Mark Brinicombe
|
|
* for the NetBSD Project.
|
|
* 4. The name of the company nor the name of the author may 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 OR CONTRIBUTORS 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.
|
|
*
|
|
* Soft interrupt and other generic interrupt functions.
|
|
*/
|
|
|
|
#include "opt_platform.h"
|
|
#include "opt_hwpmc_hooks.h"
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/interrupt.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/pmc.h>
|
|
#include <sys/pmckern.h>
|
|
|
|
#include <machine/atomic.h>
|
|
#include <machine/bus.h>
|
|
#include <machine/intr.h>
|
|
#include <machine/cpu.h>
|
|
|
|
#ifdef FDT
|
|
#include <dev/fdt/fdt_common.h>
|
|
#include <machine/fdt.h>
|
|
#endif
|
|
|
|
#define INTRNAME_LEN (MAXCOMLEN + 1)
|
|
|
|
typedef void (*mask_fn)(void *);
|
|
|
|
static struct intr_event *intr_events[NIRQ];
|
|
|
|
void intr_irq_handler(struct trapframe *);
|
|
|
|
void (*arm_post_filter)(void *) = NULL;
|
|
int (*arm_config_irq)(int irq, enum intr_trigger trig,
|
|
enum intr_polarity pol) = NULL;
|
|
|
|
/* Data for statistics reporting. */
|
|
u_long intrcnt[NIRQ];
|
|
char intrnames[(NIRQ * INTRNAME_LEN) + 1];
|
|
size_t sintrcnt = sizeof(intrcnt);
|
|
size_t sintrnames = sizeof(intrnames);
|
|
|
|
/*
|
|
* Pre-format intrnames into an array of fixed-size strings containing spaces.
|
|
* This allows us to avoid the need for an intermediate table of indices into
|
|
* the names and counts arrays, while still meeting the requirements and
|
|
* assumptions of vmstat(8) and the kdb "show intrcnt" command, the two
|
|
* consumers of this data.
|
|
*/
|
|
static void
|
|
intr_init(void *unused)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < NIRQ; ++i) {
|
|
snprintf(&intrnames[i * INTRNAME_LEN], INTRNAME_LEN, "%-*s",
|
|
INTRNAME_LEN - 1, "");
|
|
}
|
|
}
|
|
|
|
SYSINIT(intr_init, SI_SUB_INTR, SI_ORDER_FIRST, intr_init, NULL);
|
|
|
|
#ifdef FDT
|
|
int
|
|
intr_fdt_map_irq(phandle_t iparent, pcell_t *intr, int icells)
|
|
{
|
|
fdt_pic_decode_t intr_decode;
|
|
phandle_t intr_parent;
|
|
int i, rv, interrupt, trig, pol;
|
|
|
|
intr_parent = OF_node_from_xref(iparent);
|
|
for (i = 0; i < icells; i++)
|
|
intr[i] = cpu_to_fdt32(intr[i]);
|
|
|
|
for (i = 0; fdt_pic_table[i] != NULL; i++) {
|
|
intr_decode = fdt_pic_table[i];
|
|
rv = intr_decode(intr_parent, intr, &interrupt, &trig, &pol);
|
|
|
|
if (rv == 0) {
|
|
/* This was recognized as our PIC and decoded. */
|
|
interrupt = FDT_MAP_IRQ(intr_parent, interrupt);
|
|
return (interrupt);
|
|
}
|
|
}
|
|
|
|
/* Not in table, so guess */
|
|
interrupt = FDT_MAP_IRQ(intr_parent, fdt32_to_cpu(intr[0]));
|
|
|
|
return (interrupt);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
arm_setup_irqhandler(const char *name, driver_filter_t *filt,
|
|
void (*hand)(void*), void *arg, int irq, int flags, void **cookiep)
|
|
{
|
|
struct intr_event *event;
|
|
int error;
|
|
|
|
if (irq < 0 || irq >= NIRQ)
|
|
return;
|
|
event = intr_events[irq];
|
|
if (event == NULL) {
|
|
error = intr_event_create(&event, (void *)irq, 0, irq,
|
|
(mask_fn)arm_mask_irq, (mask_fn)arm_unmask_irq,
|
|
arm_post_filter, NULL, "intr%d:", irq);
|
|
if (error)
|
|
return;
|
|
intr_events[irq] = event;
|
|
snprintf(&intrnames[irq * INTRNAME_LEN], INTRNAME_LEN,
|
|
"irq%d: %-*s", irq, INTRNAME_LEN - 1, name);
|
|
}
|
|
intr_event_add_handler(event, name, filt, hand, arg,
|
|
intr_priority(flags), flags, cookiep);
|
|
}
|
|
|
|
int
|
|
arm_remove_irqhandler(int irq, void *cookie)
|
|
{
|
|
struct intr_event *event;
|
|
int error;
|
|
|
|
event = intr_events[irq];
|
|
arm_mask_irq(irq);
|
|
|
|
error = intr_event_remove_handler(cookie);
|
|
|
|
if (!TAILQ_EMPTY(&event->ie_handlers))
|
|
arm_unmask_irq(irq);
|
|
return (error);
|
|
}
|
|
|
|
void dosoftints(void);
|
|
void
|
|
dosoftints(void)
|
|
{
|
|
}
|
|
|
|
void
|
|
intr_irq_handler(struct trapframe *frame)
|
|
{
|
|
struct intr_event *event;
|
|
int i;
|
|
|
|
PCPU_INC(cnt.v_intr);
|
|
i = -1;
|
|
while ((i = arm_get_next_irq(i)) != -1) {
|
|
intrcnt[i]++;
|
|
event = intr_events[i];
|
|
if (intr_event_handle(event, frame) != 0) {
|
|
/* XXX: Log stray IRQs */
|
|
arm_mask_irq(i);
|
|
}
|
|
}
|
|
#ifdef HWPMC_HOOKS
|
|
if (pmc_hook && (PCPU_GET(curthread)->td_pflags & TDP_CALLCHAIN))
|
|
pmc_hook(PCPU_GET(curthread), PMC_FN_USER_CALLCHAIN, frame);
|
|
#endif
|
|
}
|