62a08214bc
In pre-SMPng, the global 'imen' was used to track mask state of the hardware interrupts and was aligned to the masks used by spl*(). When the atpic code was converted to using the x86 interrupt source abstraction, the global 'imen' was preserved by having each PIC instance point to an invididual byte in the global 'imen' to hold its 8-bit interrupt mask. The global 'imen' is no longer used for anything however, so rather than storing pointers in 'struct atpic', just store the individual 8-bit mask for each PIC as a char. While here, convert the ATPIC macro to using C99 initializers. Reviewed by: kib, imp MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D16827
78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)icu.h 5.6 (Berkeley) 5/9/91
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* $FreeBSD$
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*/
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/*
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* AT/386 Interrupt Control constants
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* W. Jolitz 8/89
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*/
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#ifndef _X86_ISA_ICU_H_
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#define _X86_ISA_ICU_H_
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#define ICU_IMR_OFFSET 1
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/*
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* PC-AT machines wire the slave PIC to pin 2 on the master PIC.
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*/
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#define ICU_SLAVEID 2
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/*
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* Determine the base master and slave modes not including auto EOI support.
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* All machines that FreeBSD supports use 8086 mode.
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*/
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#define BASE_MASTER_MODE ICW4_8086
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#define BASE_SLAVE_MODE ICW4_8086
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/* Enable automatic EOI if requested. */
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#ifdef AUTO_EOI_1
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#define MASTER_MODE (BASE_MASTER_MODE | ICW4_AEOI)
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#else
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#define MASTER_MODE BASE_MASTER_MODE
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#endif
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#ifdef AUTO_EOI_2
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#define SLAVE_MODE (BASE_SLAVE_MODE | ICW4_AEOI)
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#else
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#define SLAVE_MODE BASE_SLAVE_MODE
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#endif
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#define IRQ_MASK(irq) (1 << (irq))
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void atpic_handle_intr(u_int vector, struct trapframe *frame);
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void atpic_startup(void);
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#endif /* !_X86_ISA_ICU_H_ */
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