linux-kernel - Re: [PATCH v4 3/6] ARM: Add Krait L2 accessor functions

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Message-ID: <52CE0154.4030803@codeaurora.org>
Date:	Wed, 08 Jan 2014 17:54:28 -0800
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Courtney Cavin <courtney.cavin@...ymobile.com>,
	Borislav Petkov <bp@...en8.de>
CC:	"linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Mark Rutland <mark.rutland@....com>,
	Russell King <linux@....linux.org.uk>
Subject: Re: [PATCH v4 3/6] ARM: Add Krait L2 accessor functions

On 01/08/14 16:53, Courtney Cavin wrote:
> On Mon, Dec 30, 2013 at 09:14:14PM +0100, Stephen Boyd wrote:
>> Krait CPUs have a handful of L2 cache controller registers that
>> live behind a cp15 based indirection register. First you program
>> the indirection register (l2cpselr) to point the L2 'window'
>> register (l2cpdr) at what you want to read/write.  Then you
>> read/write the 'window' register to do what you want. The
>> l2cpselr register is not banked per-cpu so we must lock around
>> accesses to it to prevent other CPUs from re-pointing l2cpdr
>> underneath us.
>>
>> Cc: Mark Rutland <mark.rutland@....com>
>> Cc: Russell King <linux@....linux.org.uk>
>> Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
>> ---
>>  arch/arm/common/Kconfig                   |  3 ++
>>  arch/arm/common/Makefile                  |  1 +
>>  arch/arm/common/krait-l2-accessors.c      | 58 +++++++++++++++++++++++++++++++
>>  arch/arm/include/asm/krait-l2-accessors.h | 20 +++++++++++
>>  4 files changed, 82 insertions(+)
>>  create mode 100644 arch/arm/common/krait-l2-accessors.c
>>  create mode 100644 arch/arm/include/asm/krait-l2-accessors.h
> [...]
>> +
>> +extern void set_l2_indirect_reg(u32 addr, u32 val);
>> +extern u32 get_l2_indirect_reg(u32 addr);
> As these are Krait specific, please rename the functions to reflect
> this.
>

Ok. Borislav, should I resend to add krait_ before these functions?

-- 
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