freebsd-dev/sys/i386/include/smptests.h

209 lines
5.0 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_SMPTESTS_H_
#define _MACHINE_SMPTESTS_H_
/*
* Various 'tests in progress' and configuration parameters.
*/
/*
* Tor's clock improvements.
*
* When the giant kernel lock disappears, a different strategy should
* probably be used, thus this patch can only be considered a temporary
* measure.
*
* This patch causes (NCPU-1)*(128+100) extra IPIs per second.
* During profiling, the number is (NCPU-1)*(1024+100) extra IPIs/s
* in addition to extra IPIs due to forwarding ASTs to other CPUs.
*
* Having a shared AST flag in an SMP configuration is wrong, and I've
* just kludged around it, based upon the kernel lock blocking other
* processors from entering the kernel while handling an AST for one
* processor. When the giant kernel lock disappers, this kludge breaks.
*
* -- Tor
*/
#define BETTER_CLOCK
/*
* Control the "giant lock" pushdown by logical steps.
*/
#define PUSHDOWN_LEVEL_1
#define PUSHDOWN_LEVEL_2
/*
* Put FAST_INTR() ISRs at an APIC priority above the regular INTs.
* Allow the mp_lock() routines to handle FAST interrupts while spinning.
*/
#ifdef PUSHDOWN_LEVEL_1
#define FAST_HI
#endif
/*
* These defines enable critical region locking of areas that were
* protected via cli/sti in the UP kernel.
*
* COMLOCK protects the sio/cy drivers.
* known to be incomplete:
* joystick lkm
* ?
*/
#ifdef PUSHDOWN_LEVEL_1
#define USE_COMLOCK
#endif
/*
* Portions of the old TEST_LOPRIO code, back from the grave!
*/
#define GRAB_LOPRIO
/*
* Send CPUSTOP IPI for stop/restart of other CPUs on DDB break.
*/
#define VERBOSE_CPUSTOP_ON_DDBBREAK
#define 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
#ifdef APIC_IO
/*
* Don't assume that slow interrupt handler X is called from vector
* X + ICU_OFFSET.
*/
#define APIC_INTR_REORDER
/*
* Redirect clock interrupts to a higher priority (fast intr) vector,
* while still using the slow interrupt handler. Only effective when
* APIC_INTR_REORDER is defined.
*/
#define APIC_INTR_HIGHPRI_CLOCK
#endif /* APIC_IO */
/*
* Misc. counters.
*
#define COUNT_XINVLTLB_HITS
*/
/**
* 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 */
#endif /* _MACHINE_SMPTESTS_H_ */