From mboxrd@z Thu Jan  1 00:00:00 1970
From: Omar Ramirez Luna <omar.luna@linaro.org>
Subject: Re: [PATCH v2 7/9] ARM: OMAP: iommu: optimize save and restore routines
Date: Tue, 18 Sep 2012 19:53:34 -0500
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To: Tony Lindgren <tony@atomide.com>
Cc: Benoit Cousson <b-cousson@ti.com>, Ohad Ben-Cohen <ohad@wizery.com>, Joerg Roedel <joerg.roedel@amd.com>, Russell King <linux@arm.linux.org.uk>, Rajendra Nayak <rnayak@ti.com>, Peter Ujfalusi <peter.ujfalusi@ti.com>, Laurent Pinchart <laurent.pinchart@ideasonboard.com>, devicetree-discuss@lists.ozlabs.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org
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Hi Tony,

On 18 September 2012 13:04, Tony Lindgren <tony@atomide.com> wrote:
> * Omar Ramirez Luna <omar.luna@linaro.org> [120912 12:47]:
>> --- a/arch/arm/plat-omap/include/plat/iommu.h
>> +++ b/arch/arm/plat-omap/include/plat/iommu.h
>> @@ -27,6 +27,13 @@ struct iotlb_entry {
>>       };
>>  };
>>
>> +/* context registers */
>> +struct iommu_regs {
>> +     u32 irqen;
>> +     u32 cntl;
>> +     u32 ttb;
>> +};
>> +
>>  struct omap_iommu {
>>       const char      *name;
>>       struct module   *owner;
>> @@ -50,7 +57,8 @@ struct omap_iommu {
>>       struct list_head        mmap;
>>       struct mutex            mmap_lock; /* protect mmap */
>>
>> -     void *ctx; /* iommu context: registres saved area */
>> +     struct iommu_regs context;
>> +     int ctx_loss_cnt;
>>       u32 da_start;
>>       u32 da_end;
>>  };
>> --- a/arch/arm/plat-omap/include/plat/iommu2.h
>> +++ b/arch/arm/plat-omap/include/plat/iommu2.h
>> @@ -35,8 +35,6 @@
>>  #define MMU_READ_RAM         0x6c
>>  #define MMU_EMU_FAULT_AD     0x70
>>
>> -#define MMU_REG_SIZE         256
>> -
>>  /*
>>   * MMU Register bit definitions
>>   */
>
> These headers should be moved to include/linux/platform_data/iommu-omap.h
> or something like that. Care to take care of that too?
>
> I guess there's no reason to have both iommu.h and iommuh2.h?

Agree, can this be made as part of a separate cleanup series? I was
hoping these could make it for 3.7 so we could have a usable rpmsg for
omap4.

Regards,

Omar