PHYMSC Driver

This design document outlines the implementation of the PHYMSC driver, which acts as an interface between the PHYSIO system and MSCP (Mass Storage Control Protocol) disks on CI-20 networks. It covers key components such as the poller for server recognition, interrupt service routines for SCA callbacks, and the PHYSIO interface for I/O operations. The document also details error handling mechanisms, dual-port support, and configuration constraints for CI nodes, serving as a technical roadmap for developers and maintainers.