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76 lines
2.9 KiB
C
76 lines
2.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright 2003 by Peter Grehan. All rights reserved.
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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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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#ifndef _POWERPC_POWERMAC_HROWPICVAR_H_
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#define _POWERPC_POWERMAC_HROWPICVAR_H_
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#define HROWPIC_IRQMAX 64
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#define HROWPIC_IRQ_REGNUM 32 /* irqs per register */
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#define HROWPIC_IRQ_SHIFT 5 /* high or low irq word */
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#define HROWPIC_IRQ_MASK ((HROWPIC_IRQMAX-1) >> 1) /* irq bit pos in word */
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/*
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* Register offsets within bank. There are two identical banks,
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* separated by 16 bytes. Interrupts 0->31 are processed in the
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* second bank, and 32->63 in the first bank.
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*/
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#define HPIC_STATUS 0x00 /* active interrupt sources */
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#define HPIC_ENABLE 0x04 /* interrupt asserts ppc EXTINT */
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#define HPIC_CLEAR 0x08 /* clear int source */
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#define HPIC_TRIGGER 0x0c /* edge/level int trigger */
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#define HPIC_PRIMARY 1 /* primary register bank */
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#define HPIC_SECONDARY 0 /* secondary register bank */
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/*
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* Convert an interrupt into a prim/sec bank number
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*/
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#define HPIC_INT_TO_BANK(x) \
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(((x) >> HROWPIC_IRQ_SHIFT) ^ 1)
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/*
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* Convert an interrupt into the bit number within a bank register
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*/
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#define HPIC_INT_TO_REGBIT(x) \
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((x) & HROWPIC_IRQ_MASK)
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#define HPIC_1ST_OFFSET 0x10 /* offset to primary reg bank */
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struct hrowpic_softc {
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device_t sc_dev; /* macio device */
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struct resource *sc_rres; /* macio bus resource */
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bus_space_tag_t sc_bt; /* macio bus tag/handle */
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bus_space_handle_t sc_bh;
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int sc_rrid;
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uint32_t sc_softreg[2]; /* ENABLE reg copy */
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u_int sc_vector[HROWPIC_IRQMAX];
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};
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#endif /* _POWERPC_POWERMAC_HROWPICVAR_H_ */
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