75b2aa51b4
Updating PL310 sotfware context sc_io_coherent field in platform_pl310_init() routine for Armada 38x helps to avoid using 'arm,io-coherent' property, which is by default not present in the device tree node in Linux. This way another step for DT unification between two operating systems is done. The improvemnt will also work after enabling PLATFORM for Marvell ARMv7 SoCs. Reviewed by: andrew, cognet (mentor) Approved by: cognet (mentor) Obtained from: Semihalf Differential Revision: https://reviews.freebsd.org/D11883
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/*-
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* Copyright (c) 2017 Stormshield.
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* 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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/*
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* The machine-dependent part of the arm/pl310 driver for Armada 38x SoCs.
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*/
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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 <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 reg;
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/*
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* Enable power saving modes:
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* - Dynamic Gating stops the clock when the controller is idle.
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*/
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reg = pl310_read4(sc, PL310_POWER_CTRL);
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reg |= POWER_CTRL_ENABLE_GATING;
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pl310_write4(sc, PL310_POWER_CTRL, reg);
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pl310_write4(sc, PL310_PREFETCH_CTRL, PREFETCH_CTRL_DL |
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PREFETCH_CTRL_DATA_PREFETCH | PREFETCH_CTRL_INCR_DL |
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PREFETCH_CTRL_DL_ON_WRAP);
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/* Disable L2 cache sync for IO coherent operation */
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sc->sc_io_coherent = true;
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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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pl310_write4(sc, PL310_CTRL, val);
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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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pl310_write4(sc, PL310_DEBUG_CTRL, val);
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}
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