d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
a5584a6547
freebsd-skq/sys/x86/isa/icu.h

96 lines
3.1 KiB
C
Raw Normal View History

Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, some minor cleanup. Added $Id$ to files that did not have any version info, etc
1993-10-16 13:48:52 +00:00
* from: @(#)icu.h 5.6 (Berkeley) 5/9/91
$Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00
* $FreeBSD$
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
*/
/*
* AT/386 Interrupt Control constants
* W. Jolitz 8/89
*/
Introduce the new kernel sub-tree x86 which should contain all the code shared and generalized between our current amd64, i386 and pc98. This is just an initial step that should lead to a more complete effort. For the moment, a very simple porting of cpufreq modules, BIOS calls and the whole MD specific ISA bus part is added to the sub-tree but ideally a lot of code might be added and more shared support should grow. Sponsored by: Sandvine Incorporated Reviewed by: emaste, kib, jhb, imp Discussed on: arch MFC: 3 weeks
2010-02-25 14:13:39 +00:00
#ifndef _X86_ISA_ICU_H_
#define _X86_ISA_ICU_H_
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
Move ICU_* defines into icu.h.
2002-04-06 08:25:05 +00:00
#ifdef PC98
#define ICU_IMR_OFFSET 2
#else
#define ICU_IMR_OFFSET 1
#endif
- Fix to build a native i386 kernel without the SMP and atpic. - Merge r232744 changes to pc98. (Allow a kernel to be built with 'nodevice atpic'.) - Move ICU related defines from x86/isa/atpic.c to x86/isa/icu.h and use them in x86/x86/intr_machdep.c. Reviewed by: jhb
2012-03-16 12:13:44 +00:00
/*
* PC-98 machines wire the slave 8259A to pin 7 on the master PIC, and
* PC-AT machines wire the slave PIC to pin 2 on the master PIC.
*/
#ifdef PC98
#define ICU_SLAVEID 7
#else
#define ICU_SLAVEID 2
#endif
/*
* Determine the base master and slave modes not including auto EOI support.
* All machines that FreeBSD supports use 8086 mode.
*/
#ifdef PC98
/*
* PC-98 machines do not support auto EOI on the second PIC. Also, it
* seems that PC-98 machine PICs use buffered mode, and the master PIC
* uses special fully nested mode.
*/
#define BASE_MASTER_MODE (ICW4_SFNM | ICW4_BUF | ICW4_MS | ICW4_8086)
#define BASE_SLAVE_MODE (ICW4_BUF | ICW4_8086)
#else
#define BASE_MASTER_MODE ICW4_8086
#define BASE_SLAVE_MODE ICW4_8086
#endif
/* Enable automatic EOI if requested. */
#ifdef AUTO_EOI_1
#define MASTER_MODE (BASE_MASTER_MODE | ICW4_AEOI)
#else
#define MASTER_MODE BASE_MASTER_MODE
#endif
#ifdef AUTO_EOI_2
#define SLAVE_MODE (BASE_SLAVE_MODE | ICW4_AEOI)
#else
#define SLAVE_MODE BASE_SLAVE_MODE
#endif
#define IRQ_MASK(irq) (1 << (irq))
#define IMEN_MASK(ai) (IRQ_MASK((ai)->at_irq))
Evidently FreeBSD has long relied on the compiler to treat structures passed by value (trap frames) as if they were in fact being passed by reference. For better or worse, this incorrect behaviour is no longer present in gcc 4.1. In this patch I convert all trapframe arguments to be explicitly pass by reference. I also remove vm86_initflags, pushing the very little work that it actually does up into vm86_prepcall. Reviewed by: kan Tested by: kan
2006-12-17 05:07:01 +00:00
void atpic_handle_intr(u_int vector, struct trapframe *frame);
Add the new atpic(4) driver for the 8259A master and slave PICs. By default we provide 16 interrupt sources for IRQs 0 through 15. However, if the I/O APIC driver has already registered sources for any of those IRQs then we will silently fail to register our own source for that IRQ. Note that i386/isa/icu.h is now specific to the 8259A and no longer contains any info relevant to APICs. Also note that fast interrupts no longer use a separate entry point. Instead, both fast and threaded interrupts share the same entry point which merely looks up the appropriate source and passes control to intr_execute_handlers().
2003-11-03 21:34:45 +00:00
void atpic_startup(void);
Clean up the code exporting interrupt statistics via sysctl a bit: - move the sysctl code to kern_intr.c - do not use INTRCNT_COUNT, but rather eintrcnt - intrcnt to determine the length of the intrcnt array - move the declarations of intrnames, eintrnames, intrcnt and eintrcnt from machine-dependent include files to sys/interrupt.h - remove the hw.nintr sysctl, it is not needed. - fix various style bugs Requested by: bde Reviewed by: bde (some time ago)
2001-06-01 13:23:28 +00:00
Introduce the new kernel sub-tree x86 which should contain all the code shared and generalized between our current amd64, i386 and pc98. This is just an initial step that should lead to a more complete effort. For the moment, a very simple porting of cpufreq modules, BIOS calls and the whole MD specific ISA bus part is added to the sub-tree but ideally a lot of code might be added and more shared support should grow. Sponsored by: Sandvine Incorporated Reviewed by: emaste, kib, jhb, imp Discussed on: arch MFC: 3 weeks
2010-02-25 14:13:39 +00:00
#endif /* !_X86_ISA_ICU_H_ */
Reference in New Issue Copy Permalink