[PATCH] omap:iommu-added cache flushing operation for L2 cache

[Gupta, Ramesh]

Hi Santosh,

On Wed, Mar 2, 2011 at 6:48 AM, Santosh Shilimkar
<santosh.shilimkar at ti.com> wrote:
> Hello,
>> -----Original Message-----
>> From: linux-omap-owner at vger.kernel.org [mailto:linux-omap-
>> owner at vger.kernel.org] On Behalf Of Fernando Guzman Lugo
>> Sent: Wednesday, March 02, 2011 1:17 AM
>> To: hiroshi.doyu at nokia.com
>> Cc: tony at atomide.com; linux at arm.linux.org.uk; linux-
>> omap at vger.kernel.org; linux-arm-kernel at lists.infradead.org; linux-
>> kernel at vger.kernel.org; Ramesh Gupta; Hari Kanigeri
>> Subject: [PATCH] omap:iommu-added cache flushing operation for L2
>> cache
>>
>> From: Ramesh Gupta <grgupta at ti.com>
>>
>> Signed-off-by: Ramesh Gupta <grgupta at ti.com>
>> Signed-off-by: Hari Kanigeri <h-kanigeri2 at ti.com>
>> ---
>>  arch/arm/plat-omap/iommu.c |   22 ++++++++--------------
>>  1 files changed, 8 insertions(+), 14 deletions(-)
>>
>> diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c
>> index e3eb038..aeb2c33 100644
>> --- a/arch/arm/plat-omap/iommu.c
>> +++ b/arch/arm/plat-omap/iommu.c
>> @@ -471,22 +471,15 @@ EXPORT_SYMBOL_GPL(foreach_iommu_device);
>>   */
>>  static void flush_iopgd_range(u32 *first, u32 *last)
>>  {
>> -     /* FIXME: L2 cache should be taken care of if it exists */
>> -     do {
>> -             asm("mcr        p15, 0, %0, c7, c10, 1 @ flush_pgd"
>> -                 : : "r" (first));
>> -             first += L1_CACHE_BYTES / sizeof(*first);
>> -     } while (first <= last);
>> +     dmac_flush_range(first, last);
>
> There is note just above this API.

Thank you for your inputs. I agree, I will send an updated patch with
proper apis.

regards
Ramesh Gupta G