diff options
Diffstat (limited to 'sys/amd64/isa/ithread.c')
| -rw-r--r-- | sys/amd64/isa/ithread.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/sys/amd64/isa/ithread.c b/sys/amd64/isa/ithread.c deleted file mode 100644 index e36e8665b6d4..000000000000 --- a/sys/amd64/isa/ithread.c +++ /dev/null @@ -1,115 +0,0 @@ -/*- - * Copyright (c) 1997 Berkeley Software Design, Inc. 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. Berkeley Software Design Inc's name may not be used to endorse or - * promote products derived from this software without specific prior - * written permission. - * - * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``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 BERKELEY SOFTWARE DESIGN INC 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. - * - * BSDI Id: intr.c,v 1.6.2.5 1999/07/06 19:16:52 cp Exp - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -/* Interrupt thread code. */ - -#include <sys/param.h> -#include <sys/bus.h> -#include <sys/interrupt.h> -#include <sys/systm.h> -#include <sys/vmmeter.h> - -#include <amd64/isa/icu.h> -#include <amd64/isa/intr_machdep.h> -#include <amd64/isa/isa.h> - -struct int_entropy { - struct proc *p; - int irq; -}; - -static u_int straycount[ICU_LEN]; -static u_int glitchcount7; -static u_int glitchcount15; - -#define MAX_STRAY_LOG 5 - -/* - * Schedule a heavyweight interrupt process. This function is called - * from the interrupt handlers Xintr<num>. - */ -void -sched_ithd(void *cookie) -{ - int irq = (uintptr_t) cookie; /* IRQ we're handling */ - struct ithd *ithd = ithds[irq]; /* and the process that does it */ - int error, isr; - - /* This used to be in icu_vector.s */ - /* - * We count software interrupts when we process them. The - * code here follows previous practice, but there's an - * argument for counting hardware interrupts when they're - * processed too. - */ - atomic_add_long(intr_countp[irq], 1); /* one more for this IRQ */ - atomic_add_int(&cnt.v_intr, 1); /* one more global interrupt */ - - /* - * Schedule the interrupt thread to run if needed and switch to it - * if we schedule it if !cold. - */ - error = ithread_schedule(ithd, !cold); - - /* - * Log stray interrupts. - */ - if (error == EINVAL) { - /* Determine if it is a stray interrupt or simply a glitch */ - if (irq == 7) { - outb(IO_ICU1, OCW3_SEL); /* select IS register */ - isr = inb(IO_ICU1); - outb(IO_ICU1, OCW3_SEL | OCW3_RIS); /* reselect IIR */ - if ((isr & 0x80) == 0) { - glitchcount7++; - return; - } - } - if (irq == 15) { - outb(IO_ICU2, OCW3_SEL); /* select IS register */ - isr = inb(IO_ICU2); - outb(IO_ICU2, OCW3_SEL | OCW3_RIS); /* reselect IIR */ - if ((isr & 0x80) == 0) { - glitchcount15++; - return; - } - } - if (straycount[irq] < MAX_STRAY_LOG) { - printf("stray irq %d\n", irq); - if (++straycount[irq] == MAX_STRAY_LOG) - printf( - "got %d stray irq %d's: not logging anymore\n", - MAX_STRAY_LOG, irq); - } - } -} |