Draft Document for Review September 23, 2019 1:27 am 8860ch15.fm 15.1 Defining more I/O using HCD 15.2 PCIe feature definitions 15.2.1 Overview When defining new I/O components in an IODF, certain definitions like OSCONFIGs,  partitions, FICON Switches, Control Units, and Devices need to be made up front. After these  items have been defined, then the connections can be made: The following I/O definitions use HCD to demonstrate the examples. This section continues to  use the work example created in the previous sections (for example,  SYS6.IODF79.WORK ). Note:  Starting with the IBM Z z15 server family, the zEDC PCIe feature is no longer  available as a separate hardware feature, rather implemented directly on the processor  chip. Therefore HCD configuration is no longer required. This section provides a brief overview of the  Function  statement and covers defining ISM,  RoCE, and zHyperLink PCIe features. Starting with processor type 2827, PCIe adapters attached to a system can provide the  operating system with a variety of so-called PCIe functions to be exploited by entitled logical  partitions (LPARs). Currently HCD supports: Note:  The support of virtual functions, the allowed range of virtual functions and support of  PNETIDs depends on the processor type and support level. Refer to the “Input/Output  Configuration Program User’s Guide” SB10-7172 for details. HCD offers prompts for virtual  functions and ensures that the validation rules are fulfilled. HCD provides dialogs to define, change, delete, and view PCIe functions, and to control,  which LPARs have access to which PCIe functions. 360  IBM z15 (8561) Configuration Setup GLYPH<SM590000> Defining an ISM PCIe function GLYPH<SM590000> Defining a RoCE PCIe function GLYPH<SM590000> Defining a zHyperLink PCIe function GLYPH<SM590000> Internal Shared Memory PCIe Adapter (ISM). A virtual PCIe adapter for which a virtual  channel identifier (VCHID) has to be defined. GLYPH<SM590000> Remote Direct Memory Access (RDMA) over Converged Ethernet (RoCE). PCIe functions  of type RoCE and RoCE-2 may be assigned to external physical networks by specifying  corresponding PNET IDs. GLYPH<SM590000> Regional Crypto Enablement (RCE). This PCIe function type is used for IBM approved  vendor crypto adapters, and is not in the scope of this book.