Hi, I have a question on behalf of a customer of ours trying to use the inside-secure crypto API driver. They are experiencing issues with result data not arriving in the result buffer. This seems to have something to do with not being able to DMA to said buffer, as they can workaround the issue by explicitly allocating a DMA buffer on the fly and copying data from there to the original destination.
The problem I have is that I do not have access to their hardware and the driver seems to work just fine on any hardware (both x64 and ARM64) I have available here, so I have to approach this purely theoretically ... For the situation where this problem is occuring, the actual buffers are stored inside the ahash_req structure. So my question is: is there any reason why this structure may not be DMA-able on some systems? (as I have a hunch that may be the problem ...) Regards, Pascal van Leeuwen Silicon IP Architect Multi-Protocol Engines, Rambus Security Rambus ROTW Holding BV +31-73 6581953 Note: The Inside Secure/Verimatrix Silicon IP team was recently acquired by Rambus. Please be so kind to update your e-mail address book with my new e-mail address. ** This message and any attachments are for the sole use of the intended recipient(s). It may contain information that is confidential and privileged. If you are not the intended recipient of this message, you are prohibited from printing, copying, forwarding or saving it. Please delete the message and attachments and notify the sender immediately. ** Rambus Inc.<http://www.rambus.com>
