Hi,
How is it possible to wait for completion here?: shash.c
shash_compat_digest()
{
....
data = crypto_kmap(sg_page(sg), 0);
err = crypto_shash_digest(desc, data + offset, nbytes, out);
crypto_kunmap(data, 0);
....
}
It happens as single operation/call.
Thanks,
Dmitry
ext Herbert Xu wrote:
> 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,
>
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