On Fri, Jul 26, 2024 at 04:50:21PM +0100, Jonathan Cameron wrote: > > > diff --git a/Documentation/userspace-api/fwctl.rst b/Documentation/userspace-api/fwctl.rst > > new file mode 100644 > > index 00000000000000..ece2db2530502f > > --- /dev/null > > +++ b/Documentation/userspace-api/fwctl.rst > > @@ -0,0 +1,269 @@ > > > +Overview > > +======== > > + > > +Modern devices contain extensive amounts of FW, and in many cases, are largely > > FW and, in many cases, are Yep, Randy noted it too > > +software-defined pieces of hardware. The evolution of this approach is largely a > > +reaction to Moore's Law where a chip tape out is now highly expensive, and the > > +chip design is extremely large. Replacing fixed HW logic with a flexible and > > +tightly coupled FW/HW combination is an effective risk mitigation against chip > > +respin. Problems in the HW design can be counteracted in device FW. This is > > +especially true for devices which present a stable and backwards compatible > > +interface to the operating system driver (such as NVMe). > > ... > > The document lays out where this sits well. Thanks! Jason
