From: Rob Gardner <rob.gardner@xxxxxxxxxx> Date: Tue, 5 Dec 2017 19:40:41 -0700 > v2: > Revised example code and updated documentation > New version of Hypervisor API specification > > Recent Oracle Sparc processors (M7 and M8) have a coprocessor which > lives on the cpu chip. The coprocessor is called DAX (Data Analytics > Accelerator), and is controlled via sun4v hypercalls. The programmatic > interface to the coprocessor is somewhat unorthodox, and all commands > and parameters are documented in detail in dax-hv-api.txt. The driver > API is described in oracle-dax.txt, which has been expanded with new > example code along with detailed explanations to demonstrate how user > and kernel code can use the capabilities of DAX. Those who wish to > use the coprocessor in the kernel will need to construct their own > command blocks to submit, as no higher level services are provided. > Note that it is expected that general use of the coprocessor will go > through the companion userspace library, which has been published > under UPL at: > https://oss.oracle.com/git/gitweb.cgi?p=libdax.git > This library is a comprehensive collection of higher level functions > along with tests, documentation, and code examples. The format of the > command control blocks is described in this library as well. Though > the primary purpose of the coprocessor is to accelerate data analytics > operations, it may be used for any suitable purpose. > > The machine descriptor identifies the device as "dax", and all > internal documentation refers to it as "dax". But since the term "dax" > already has other meanings and uses in Linux, we call this driver > "oradax". Series applied to sparc-next, thanks for doing all of this hard work. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
