On Tue, Feb 16, 2010 at 08:36:08AM +0200, Dmitry Kasatkin wrote: > Hi, > > we have HW accelerator which can be accessed without DMA. > CPU just sequentially writes data to the port and then reads result.
Well if that's the case then you definitely don't need anything other than kmap_atomic. You should be able to map it atomically, write the data out, unmap it, and then wait for the completion. Non-atomic kmaps should be avoided if at all possible. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <[email protected]> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
