[PATCH 15/16] ARM: vexpress/dcscb: handle platform coherency exit/setup and CCI
Dave Martin
dave.martin at linaro.org
Thu Jan 10 07:05:32 EST 2013
On Wed, Jan 09, 2013 at 07:20:50PM -0500, Nicolas Pitre wrote:
> From: Dave Martin <dave.martin at linaro.org>
>
> Add the required code to properly handle race free platform coherency exit
> to the DCSCB power down method.
>
> The power_up_setup callback is used to enable the CCI interface for
> the cluster being brought up. This must be done in assembly before
> the kernel environment is entered.
>
> Thanks to Achin Gupta and Nicolas Pitre for their help and
> contributions.
>
> Signed-off-by: Dave Martin <dave.martin at linaro.org>
> Signed-off-by: Nicolas Pitre <nico at linaro.org>
> ---
> arch/arm/mach-vexpress/Kconfig | 1 +
> arch/arm/mach-vexpress/Makefile | 2 +-
> arch/arm/mach-vexpress/dcscb.c | 90 +++++++++++++++++++++++++++---------
> arch/arm/mach-vexpress/dcscb_setup.S | 77 ++++++++++++++++++++++++++++++
> 4 files changed, 146 insertions(+), 24 deletions(-)
> create mode 100644 arch/arm/mach-vexpress/dcscb_setup.S
[...]
> diff --git a/arch/arm/mach-vexpress/dcscb.c b/arch/arm/mach-vexpress/dcscb.c
[...]
> @@ -179,6 +219,8 @@ static void __init dcscb_usage_count_init(void)
> dcscb_use_count[cpu][cluster] = 1;
> }
>
> +extern void dcscb_power_up_setup(void);
The following change can be folded in to match the prototype to the
underlying function.
Cheers
---Dave
diff --git a/arch/arm/mach-vexpress/dcscb.c b/arch/arm/mach-vexpress/dcscb.c
index 95a2d0d..4057f8b 100644
--- a/arch/arm/mach-vexpress/dcscb.c
+++ b/arch/arm/mach-vexpress/dcscb.c
@@ -219,7 +219,7 @@ static void __init dcscb_usage_count_init(void)
dcscb_use_count[cpu][cluster] = 1;
}
-extern void dcscb_power_up_setup(void);
+extern void dcscb_power_up_setup(unsigned int affinity_level);
static int __init dcscb_init(void)
{
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