Nishant,
With 64MB we were seeing cases of running out of DSP virtual memory when running multiple Multimedia use cases in parallel at a time.
Thank you,
Best regards,
Hari
-----Original Message-----
From: Menon, Nishanth
Sent: Friday, January 08, 2010 7:48 AM
To: Ramirez Luna, Omar
Cc: linux-omap; Hiroshi Doyu; Ameya Palande; Felipe Contreras; Guzman Lugo, Fernando; Ramos Falcon, Ernesto; Kanigeri, Hari; Aguilar Pena, Leed
Subject: Re: [PATCH 3/8] DSPBRIDGE: Increased DMM size to 256MB
Ramirez Luna, Omar had written, on 01/07/2010 07:00 PM, the following:
> From: Hari Kanigeri <h-kanigeri2@xxxxxx>
>
> This patch increases the DMM from 64MB to 256MB.
begs the question: Why?
>
> Signed-off-by: Hari Kanigeri <h-kanigeri2@xxxxxx>
> Signed-off-by: Omar Ramirez Luna <omar.ramirez@xxxxxx>
> Signed-off-by: Leed Aguilar <leed.aguilar@xxxxxx>
> ---
> arch/arm/plat-omap/include/dspbridge/dmm.h | 2 +-
> drivers/dsp/bridge/pmgr/dmm.c | 8 ++++----
> 2 files changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/arch/arm/plat-omap/include/dspbridge/dmm.h b/arch/arm/plat-omap/include/dspbridge/dmm.h
> index 335edf8..af0c35a 100644
> --- a/arch/arm/plat-omap/include/dspbridge/dmm.h
> +++ b/arch/arm/plat-omap/include/dspbridge/dmm.h
> @@ -41,7 +41,7 @@
> u32 reserved;
> } ;
>
> -#define DMMPOOLSIZE 0x4000000
> +#define DMMPOOLSIZE 0x10000000
>
> /*
> * ======== DMM_GetHandle ========
> diff --git a/drivers/dsp/bridge/pmgr/dmm.c b/drivers/dsp/bridge/pmgr/dmm.c
> index 46c05c6..f878855 100644
> --- a/drivers/dsp/bridge/pmgr/dmm.c
> +++ b/drivers/dsp/bridge/pmgr/dmm.c
> @@ -103,10 +103,10 @@ static struct GT_Mask DMM_debugMask = { NULL, NULL }; /* GT trace variable */
>
> static u32 cRefs; /* module reference count */
> struct MapPage {
> - u32 RegionSize:15;
> - u32 MappedSize:15;
> - u32 bReserved:1;
> - u32 bMapped:1;
> + u64 RegionSize:31;
> + u64 MappedSize:31;
> + u64 bReserved:1;
> + u64 bMapped:1;
> };
>
> /* Create the free list */
--
Regards,
Nishanth Menon
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