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This commit extends the coherency fabric code to provide a coherency_available()function that the SoC code can call to be told whether coherency support is available or not. On Armada 370/XP, coherency support is available as soon as the relevant DT node is present. On some upcoming SoCs, the DT node needs to be present *and* the system running with CONFIG_SMP enabled. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Link: https://lkml.kernel.org/r/1397483228-25625-3-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
24 lines
626 B
C
24 lines
626 B
C
/*
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* arch/arm/mach-mvebu/include/mach/coherency.h
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*
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*
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* Coherency fabric (Aurora) support for Armada 370 and XP platforms.
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*
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* Copyright (C) 2012 Marvell
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#ifndef __MACH_370_XP_COHERENCY_H
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#define __MACH_370_XP_COHERENCY_H
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extern unsigned long coherency_phys_base;
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int set_cpu_coherent(unsigned int cpu_id, int smp_group_id);
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int coherency_init(void);
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int coherency_available(void);
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#endif /* __MACH_370_XP_COHERENCY_H */
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