[PATCH v4 3/6] ARM: Add Krait L2 accessor functions

Stephen Boyd
2014-01-09T01:54:28Z

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@arm.com>
>> Cc: Russell King <linux@arm.linux.org.uk>
>> Signed-off-by: Stephen Boyd <sboyd@codeaurora.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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