6f4b57a4fc
This code was eliminated when the PEND_INTS algorithm was added. But it was discovered that PEND_INTS only worsen latency for FAST_INTR() routines, which can't be marked pending. Noticed & debugged by: dave adkins <adkin003@gold.tc.umn.edu>
235 lines
5.6 KiB
C
235 lines
5.6 KiB
C
/*
|
|
* Copyright (c) 1996, by Steve Passe
|
|
* 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. The name of the developer 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 AND CONTRIBUTORS ``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.
|
|
*
|
|
* $Id: smptests.h,v 1.20 1997/08/04 17:20:39 smp Exp smp $
|
|
*/
|
|
|
|
#ifndef _MACHINE_SMPTESTS_H_
|
|
#define _MACHINE_SMPTESTS_H_
|
|
|
|
|
|
/*
|
|
* Various 'tests in progress' and configuration parameters.
|
|
*/
|
|
|
|
|
|
/*
|
|
* Use the new INT passoff algorithm:
|
|
*
|
|
* int_is_already_active = iactive & (1 << INT_NUMBER);
|
|
* iactive |= (1 << INT_NUMBER);
|
|
* if ( int_is_already_active || (try_mplock() == FAIL ) {
|
|
* mask_apic_int( INT_NUMBER );
|
|
* ipending |= (1 << INT_NUMBER);
|
|
* do_eoi();
|
|
* cleanup_and_iret();
|
|
* }
|
|
*
|
|
* This algorithm seems to speed up kernel compiles a little,
|
|
* my previous times were about 100s - 101s.
|
|
* Also of note is the "point of diminishing returns" for the '-j'
|
|
* arg to make seems to have increased from 8 to 12, AND the numbers
|
|
* don't fall off as rapidly as before.
|
|
*
|
|
* 98.17s real 129.24s user 50.82s system # time make -j8
|
|
* 98.67s real 128.44s user 52.55s system # time make -j10
|
|
* 97.70s real 128.54s user 51.86s system # time make -j12
|
|
* 98.57s real 130.14s user 50.46s system # time make -j14
|
|
* 99.12s real 130.04s user 51.82s system # time make -j16
|
|
* 97.75s real 129.91s user 51.62s system # time make -j18
|
|
* 100.51s real 132.67s user 50.91s system # time make -j20
|
|
*
|
|
* Note: currently broken for INTerrupting ISA cards, including onboard IDE.
|
|
*/
|
|
#define PEND_INTS
|
|
|
|
|
|
/*
|
|
* Portions of the old TEST_LOPRIO code, back from the grave!
|
|
*/
|
|
#define GRAB_LOPRIO
|
|
|
|
|
|
/*
|
|
* 1st attempt to use the 'ExtInt' connected 8259 to attach 8254 timer.
|
|
* failing that, attempt to attach 8254 timer via direct APIC pin.
|
|
* failing that, panic!
|
|
*
|
|
*/
|
|
#define NEW_STRATEGY
|
|
|
|
|
|
/*
|
|
* For emergency fallback, define ONLY if 'NEW_STRATEGY' fails to work.
|
|
* Formerly needed by Tyan Tomcat II and SuperMicro P6DNxxx motherboards.
|
|
*
|
|
#define SMP_TIMER_NC
|
|
*/
|
|
|
|
|
|
/*
|
|
* Send CPUSTOP IPI for stop/restart of other CPUs on DDB break.
|
|
*
|
|
*/
|
|
#define CPUSTOP_ON_DDBBREAK
|
|
#define VERBOSE_CPUSTOP_ON_DDBBREAK
|
|
|
|
|
|
/*
|
|
* Bracket code/comments relevant to the current 'giant lock' model.
|
|
* Everything is now the 'giant lock' model, but we will use this as
|
|
* we start to "push down" the lock.
|
|
*/
|
|
#define GIANT_LOCK
|
|
|
|
|
|
/*
|
|
* deal with broken smp_idleloop()
|
|
*/
|
|
#define IGNORE_IDLEPROCS
|
|
|
|
|
|
/*
|
|
* misc. counters
|
|
*
|
|
#define COUNT_XINVLTLB_HITS
|
|
#define COUNT_SPURIOUS_INTS
|
|
#define COUNT_CSHITS
|
|
*/
|
|
|
|
|
|
/**
|
|
* hack to "fake-out" kernel into thinking it is running on a 'default config'
|
|
*
|
|
* value == default type
|
|
#define TEST_DEFAULT_CONFIG 6
|
|
*/
|
|
|
|
|
|
/*
|
|
* simple test code for IPI interaction, save for future...
|
|
*
|
|
#define TEST_TEST1
|
|
#define IPI_TARGET_TEST1 1
|
|
*/
|
|
|
|
|
|
/*
|
|
* Address of POST hardware port.
|
|
* Defining this enables POSTCODE macros.
|
|
*
|
|
#define POST_ADDR 0x80
|
|
*/
|
|
|
|
|
|
/*
|
|
* POST hardware macros.
|
|
*/
|
|
#ifdef POST_ADDR
|
|
#define ASMPOSTCODE_INC \
|
|
pushl %eax ; \
|
|
movl _current_postcode, %eax ; \
|
|
incl %eax ; \
|
|
andl $0xff, %eax ; \
|
|
movl %eax, _current_postcode ; \
|
|
outb %al, $POST_ADDR ; \
|
|
popl %eax
|
|
|
|
/*
|
|
* Overwrite the current_postcode value.
|
|
*/
|
|
#define ASMPOSTCODE(X) \
|
|
pushl %eax ; \
|
|
movl $X, %eax ; \
|
|
movl %eax, _current_postcode ; \
|
|
outb %al, $POST_ADDR ; \
|
|
popl %eax
|
|
|
|
/*
|
|
* Overwrite the current_postcode low nibble.
|
|
*/
|
|
#define ASMPOSTCODE_LO(X) \
|
|
pushl %eax ; \
|
|
movl _current_postcode, %eax ; \
|
|
andl $0xf0, %eax ; \
|
|
orl $X, %eax ; \
|
|
movl %eax, _current_postcode ; \
|
|
outb %al, $POST_ADDR ; \
|
|
popl %eax
|
|
|
|
/*
|
|
* Overwrite the current_postcode high nibble.
|
|
*/
|
|
#define ASMPOSTCODE_HI(X) \
|
|
pushl %eax ; \
|
|
movl _current_postcode, %eax ; \
|
|
andl $0x0f, %eax ; \
|
|
orl $(X<<4), %eax ; \
|
|
movl %eax, _current_postcode ; \
|
|
outb %al, $POST_ADDR ; \
|
|
popl %eax
|
|
#else
|
|
#define ASMPOSTCODE_INC
|
|
#define ASMPOSTCODE(X)
|
|
#define ASMPOSTCODE_LO(X)
|
|
#define ASMPOSTCODE_HI(X)
|
|
#endif /* POST_ADDR */
|
|
|
|
|
|
/*
|
|
* these are all temps for debugging...
|
|
*
|
|
#define GUARD_INTS
|
|
*/
|
|
|
|
/*
|
|
* This macro traps unexpected INTs to a specific CPU, eg. GUARD_CPU.
|
|
*/
|
|
#ifdef GUARD_INTS
|
|
#define GUARD_CPU 1
|
|
#define MAYBE_PANIC(irq_num) \
|
|
cmpl $GUARD_CPU, _cpuid ; \
|
|
jne 9f ; \
|
|
cmpl $1, _ok_test1 ; \
|
|
jne 9f ; \
|
|
pushl lapic_isr3 ; \
|
|
pushl lapic_isr2 ; \
|
|
pushl lapic_isr1 ; \
|
|
pushl lapic_isr0 ; \
|
|
pushl lapic_irr3 ; \
|
|
pushl lapic_irr2 ; \
|
|
pushl lapic_irr1 ; \
|
|
pushl lapic_irr0 ; \
|
|
pushl $irq_num ; \
|
|
pushl _cpuid ; \
|
|
pushl $panic_msg ; \
|
|
call _printf ; \
|
|
addl $44, %esp ; \
|
|
9:
|
|
#else
|
|
#define MAYBE_PANIC(irq_num)
|
|
#endif /* GUARD_INTS */
|
|
|
|
#endif /* _MACHINE_SMPTESTS_H_ */
|