83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/*-
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* Copyright (c) 2012 Olivier Houchard. 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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*
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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, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <arm/ti/ti_smc.h>
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#include <arm/ti/omap4/omap4_smc.h>
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#include <machine/bus.h>
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#include <machine/pl310.h>
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void
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platform_pl310_init(struct pl310_softc *sc)
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{
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uint32_t aux, prefetch;
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aux = pl310_read4(sc, PL310_AUX_CTRL);
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prefetch = pl310_read4(sc, PL310_PREFETCH_CTRL);
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/*
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* Disable instruction prefetch
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*/
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prefetch &= ~PREFETCH_CTRL_INSTR_PREFETCH;
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aux &= ~AUX_CTRL_INSTR_PREFETCH;
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// prefetch &= ~PREFETCH_CTRL_DATA_PREFETCH;
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// aux &= ~AUX_CTRL_DATA_PREFETCH;
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/*
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* Make sure data prefetch is on
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*/
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prefetch |= PREFETCH_CTRL_DATA_PREFETCH;
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aux |= AUX_CTRL_DATA_PREFETCH;
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/*
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* TODO: add tunable for prefetch offset
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* and experiment with performance
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*/
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ti_smc0(aux, 0, WRITE_AUXCTRL_REG);
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ti_smc0(prefetch, 0, WRITE_PREFETCH_CTRL_REG);
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}
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void
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platform_pl310_write_ctrl(struct pl310_softc *sc, uint32_t val)
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{
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ti_smc0(val, 0, L2CACHE_WRITE_CTRL_REG);
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}
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void
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platform_pl310_write_debug(struct pl310_softc *sc, uint32_t val)
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{
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ti_smc0(val, 0, L2CACHE_WRITE_DEBUG_REG);
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}
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