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path: root/arch/arm/mach-mvebu/coherency.h
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2016-06-16mvebu: add definition for coherency_baseBen Dooks
Fix the warning that coherency_base is not defined by adding it to coherency.h (it is only used in the coherency_ll.S): arch/arm/mach-mvebu/coherency.c:41:14: warning: symbol 'coherency_base' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2014-05-08ARM: mvebu: Remove the unused argument of set_cpu_coherent()Gregory CLEMENT
set_cpu_coherent() took the SMP group ID as parameter. But this parameter was never used, and the CPU always uses the SMP group 0. So we can remove this parameter. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Link: https://lkml.kernel.org/r/1397488214-20685-5-git-send-email-gregory.clement@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-05-08ARM: mvebu: ll_set_cpu_coherent always uses the current CPUGregory CLEMENT
ll_set_cpu_coherent is always used on the current CPU, so instead of passing the CPU id as argument, ll_set_cpu_coherent() can find it by itself. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Link: https://lkml.kernel.org/r/1397488214-20685-4-git-send-email-gregory.clement@free-electrons.com Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-04-24ARM: mvebu: add a coherency_available() callThomas Petazzoni
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>
2013-11-24ARM: mvebu: fix some sparse warningsJisheng Zhang
This patch fixes conflicting types for 'set_cpu_coherent' and fixes the following sparse warnings. arch/arm/mach-mvebu/system-controller.c:42:38: warning: symbol 'armada_370_xp_system_controller' was not declared. Should it be static? arch/arm/mach-mvebu/system-controller.c:49:38: warning: symbol 'orion_system_controller' was not declared. Should it be static? arch/arm/mach-mvebu/system-controller.c:67:6: warning: symbol 'mvebu_restart' was not declared. Should it be static? arch/arm/mach-mvebu/coherency.c:31:15: warning: symbol 'coherency_phys_base' was not declared. Should it be static? arch/arm/mach-mvebu/coherency.c:48:5: warning: symbol 'set_cpu_coherent' was not declared. Should it be static? arch/arm/mach-mvebu/coherency.c:123:12: warning: symbol 'coherency_init' was not declared. Should it be static? arch/arm/mach-mvebu/pmsu.c:38:5: warning: symbol 'armada_xp_boot_cpu' was not declared. Should it be static? arch/arm/mach-mvebu/pmsu.c:61:12: warning: symbol 'armada_370_xp_pmsu_init' was not declared. Should it be static? arch/arm/mach-mvebu/platsmp.c:49:13: warning: symbol 'set_secondary_cpus_clock' was not declared. Should it be static? arch/arm/mach-mvebu/platsmp.c:97:13: warning: symbol 'armada_xp_smp_prepare_cpus' was not declared. Should it be static? arch/arm/mach-mvebu/hotplug.c:24:12: warning: symbol 'armada_xp_cpu_die' was not declared. Should it be static? Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-06-13arm: mvebu: remove dependency of SMP init on static I/O mappingThomas Petazzoni
The ->smp_init_cpus() function is called very early during boot, at a point where dynamic I/O mappings are not yet possible. However, in the Armada 370/XP implementation of this function, we have to get the number of CPUs. We used to do that by accessing a hardware register, which requires relying on a static I/O mapping set up by ->map_io(). Not only this requires hardcoding a virtual address, but it also prevents us from removing the static I/O mapping. So this commit changes the way used to get the number of CPUs: we now use the Device Tree, which is a representation of the hardware, and provides us the number of available CPUs. This is also more accurate, because it potentially allows to boot the Linux kernel on only a number of CPUs given by the Device Tree, instead of unconditionally on all CPUs. As a consequence, the coherency_get_cpu_count() function becomes no longer used, so we remove it. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2012-11-21arm: mvebu: Add support for coherency fabric in mach-mvebuGregory CLEMENT
The Armada 370 and Armada XP SOCs have a coherency fabric unit which is responsible for ensuring hardware coherency between all CPUs and between CPUs and I/O masters. This patch provides the basic support needed for SMP. Signed-off-by: Yehuda Yitschak <yehuday@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Reviewed-by: Will Deacon <will.deacon@arm.com>