2029d071db
unmerged BERI DTS files) to head: Use the OFW compatible string "mips,mips4k" rather than "mips4k,cp0" for interrupt control using MIPS4k CP0. Suggested by: thompsa Implement a MIPS FDT PIC decode routine to use when no PIC has been configured, which assumes a cascade back to the nexus bus (e.g., the on-board CP0 interrupt management parts on the MIPS). If the soc bus in a MIPS DTS file is declared as "mips4k,cp0"-compatible, then this will be enabled. This is sufficient to allow IRQs to be configured on BERI. Sponsored by: DARPA, AFRL
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*-
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* Copyright (c) 2009-2010 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Semihalf under sponsorship from
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* the FreeBSD Foundation.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/intr_machdep.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/ofw/openfirm.h>
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#include "ofw_bus_if.h"
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#include "fdt_common.h"
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struct fdt_fixup_entry fdt_fixup_table[] = {
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{ NULL, NULL }
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};
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/*
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* For PIC-free boards, provide a PIC decoder to be used with mips4k CP0
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* interrupt control directly.
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*/
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static int
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fdt_pic_decode_mips4k_cp0(phandle_t node, pcell_t *intr, int *interrupt,
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int *trig, int *pol)
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{
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if (!fdt_is_compatible(node, "mips,mips4k"))
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return (ENXIO);
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*interrupt = fdt32_to_cpu(intr[0]);
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*trig = INTR_TRIGGER_CONFORM;
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*pol = INTR_POLARITY_CONFORM;
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return (0);
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}
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fdt_pic_decode_t fdt_pic_table[] = {
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&fdt_pic_decode_mips4k_cp0,
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NULL
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};
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