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b5bee82277
Use system-specific information to program the interrupt line register with the interrupt mappings, which is what the SRM console does on real hardware; some operating systems (e.g. NetBSD) use this information rather than having interrupt mappings tables for every possible system variation. Signed-off-by: Jason Thorpe <thorpej@me.com> Message-Id: <20210603035317.6814-7-thorpej@me.com> [rth: Use inline not macro; fold -1 -> 0xff map into interface.] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/* Declarations for the CLIPPER system emulation.
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Copyright (C) 2011 Richard Henderson
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This file is part of QEMU PALcode.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the text
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of the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef SYS_CLIPPER_H
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#define SYS_CLIPPER_H 1
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#include "core-typhoon.h"
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#define SYS_TYPE ST_DEC_TSUNAMI
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#define SYS_VARIATION (5 << 10)
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#define SYS_REVISION 0
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#ifndef __ASSEMBLER__
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static inline uint8_t MAP_PCI_INTERRUPT(int slot, int pin, int class_id)
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{
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uint8_t irq = 0xff; /* no interrupt mapping */
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/* PCI-ISA bridge is hard-wired to IRQ 55 on real hardware, and comes in
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at a different SCB vector; force the line register to 0xff.
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Otherwise, see qemu hw/alpha/dp264.c:clipper_pci_map_irq() */
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if (class_id != 0x0601 && pin >= 1 && pin <= 4)
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irq = (slot + 1) * 4 + (pin - 1);
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return irq;
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}
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#endif /* ! __ASSEMBLER__ */
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#endif
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