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Sylvain, Thanks for the information... I will try this. What I really need to do is to map these pages at user level (these pages will be contiguous pages, because they are used for DMA purpose). I want to do using an mmap() entry point in a driver, in order to map this to the user. Of course in that case ioremap() does not work. Any Clue ? Thanks - Jose Joyeau Sylvain wrote: Jose, You are right, PQ3 supports endianess choice on a per page basis. Without any hook in Linux, you can remap physical address range (but RAM), by calling __ioremap() with the "_PAGE_ENDIAN" bit set in the flags.-- sj-----Original Message----- From: [EMAIL PROTECTED] g [mailto:[EMAIL PROTECTED] zlabs.org] On Behalf Of Jose Almeida Sent: vendredi 24 août 2007 09:59 To: Linuxppc-embedded@ozlabs.org Subject: little endian page mapping on PQ3 Hi all, Looking at PQ3 documentation, it looks like there is a way to select on a page basis if we would like to map one particular page in BIG or LITTLE endian. This is a very nice feature when you need to exchange some data between a PC and a PQ3 target. I am wondering if someone have already tryed this PQ3 feature ? I guess this would require some kind of hook in the kernel ... Any clue ? Thanks - Jose _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded_______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded -- Meet us at our next event: MAKS - August 21-26, 2007 Moscow, Russia http://www.aviasalon.com TechTalk Hamburg - September 26, 2007 Hamburg, Germany http://www.sysgo.com/news-events/events MAE - October 20, 2007 Gaydon, United Kingdom http://www.mae-show.com/ |
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