Pierre Ossman wrote:
Dan Williams wrote:
The ADMA (Asynchronous / Application Specific DMA) interface is proposed
as a cross platform mechanism for supporting system CPU offload engines.
The goal is to provide a unified asynchronous interface to support
memory copies, block xor, block pattern setting, block compare, CRC
calculation, cryptography etc. The ADMA interface should support a PIO
fallback mode allowing a given ADMA engine implementation to use the
system CPU for operations without a hardware accelerated backend. In
other words a client coded to the ADMA interface transparently receives
hardware acceleration for its operations depending on the features of
the underlying platform.
I'm wondering, how common is this ADMA acronym? I've been writing a MMC
In ATA land, ADMA is a hardware ATA controller interface, similar to
AHCI. We even have a pdc_adma (Pacific Digital ADMA) driver in the
tree, and NVIDIA uses a variant of the ADMA interface in their SATA
controllers.
Jeff
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