Date: Mon, 3 May 2010 22:47:31 +0200 From: Rafal Jaworowski <raj@semihalf.com> To: Kristof Provost <kristof@sigsegv.be> Cc: freebsd-hackers@freebsd.org, Jakub Klama <jceel@semihalf.com> Subject: Re: GSoC: Generic DMA engine framework Message-ID: <C2E419A8-A0CB-49F4-8290-D2A7407F102A@semihalf.com> In-Reply-To: <20100503202220.GD24372@nereid> References: <61BCAC8D-B468-41BD-9537-6DC6E5AFB834@semihalf.com> <20100503195107.GC24372@nereid> <8CE0B65C-58CE-44AA-9DF1-804F03769DD1@semihalf.com> <20100503202220.GD24372@nereid>
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On 2010-05-03, at 22:22, Kristof Provost wrote: > On 2010-05-03 22:12:28 (+0200), Rafal Jaworowski <raj@semihalf.com> = wrote: >>=20 >> Not sure how far you went with the crypto engine work, but be advised = we already have completed the CESA driver, only I haven't managed to = commit the code yet.. Let me know if you'd like to see / test drive = this. > Yes, I'd be quite interested to see how my attempts compare to your > work. Does it support the Sheevaplug SoC or the 88F5182 (Orion)? I > didn't study the Sheevaplug documentation in great detail but I = believe > the CESA is similar (but not identical) on the two chips. I believe the 88F5182 has CESA as well, although as far I can see the = main difference is that while the 88F6xxx (and MV-78xxx) CESA has an = associated (to some extent can be considered as dedicated) TDMA engine, = the one in 88F5182 does not, and can only use the generic purpose engine = (IDMA). Our driver assumes TDMA and was only tested with 88F6xxx and = 78xxx, so it seems there's some work involved with getting this to work = on the 5182. Let me carve the code out for your reference so that you = can try to extend it to work wirh Orion. >> BTW: out of curiousity, what is the platform based on 88F5281 you're = using? > It's a TS-7800: > http://www.embeddedarm.com/products/board-detail.php?product=3DTS-7800 Does the generic DB-88F5XXX kernel config and existing code work with = this device, or have you had to modify anything? Rafal
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