1bbf21555SRichard Lowe.\" 2bbf21555SRichard Lowe.\" This file and its contents are supplied under the terms of the 3bbf21555SRichard Lowe.\" Common Development and Distribution License ("CDDL"), version 1.0. 4bbf21555SRichard Lowe.\" You may only use this file in accordance with the terms of version 5bbf21555SRichard Lowe.\" 1.0 of the CDDL. 6bbf21555SRichard Lowe.\" 7bbf21555SRichard Lowe.\" A full copy of the text of the CDDL should have accompanied this 8bbf21555SRichard Lowe.\" source. A copy of the CDDL is also available via the Internet at 9bbf21555SRichard Lowe.\" http://www.illumos.org/license/CDDL. 10bbf21555SRichard Lowe.\" 11bbf21555SRichard Lowe.\" 12*92279cb6SRobert Mustacchi.\" Copyright 2025 Oxide Computer Company 13bbf21555SRichard Lowe.\" 14*92279cb6SRobert Mustacchi.Dd January 11, 2025 15bbf21555SRichard Lowe.Dt AMDZEN 4D 16bbf21555SRichard Lowe.Os 17bbf21555SRichard Lowe.Sh NAME 18bbf21555SRichard Lowe.Nm amdzen , 19bbf21555SRichard Lowe.Nm amdzen_stub 20bbf21555SRichard Lowe.Nd AMD Zen Nexus Driver 21bbf21555SRichard Lowe.Sh DESCRIPTION 22bbf21555SRichard LoweThe 23bbf21555SRichard Lowe.Nm 24bbf21555SRichard Lowedriver provides access to the Northbridge, Data Fabric, and System 25bbf21555SRichard LoweManagement Network 26bbf21555SRichard Lowe.Pq SMN 27bbf21555SRichard Lowefor a number of AMD processor lines, including AMD Ryzen CPUs and APUs, 28bbf21555SRichard LoweThreadRipper CPUs, and EPYC CPUs from the following families: 29bbf21555SRichard Lowe.Bl -bullet 30bbf21555SRichard Lowe.It 31bbf21555SRichard LoweAMD Zen Naples, Summit Ridge, Whitehaven 32bbf21555SRichard Lowe.Pq Family 17h 33bbf21555SRichard Lowe.It 34bbf21555SRichard LoweAMD Zen+ Colfax, Picasso, and Pinnacle Ridge 35bbf21555SRichard Lowe.Pq Family 17h 36bbf21555SRichard Lowe.It 37f8e9c7b3SRobert MustacchiAMD Zen 2 Castle Peak, Matisse, Mendocino, Rome, Renoir, and Van Gogh 38bbf21555SRichard Lowe.Pq Family 17h 39bbf21555SRichard Lowe.It 40bbf21555SRichard LoweAMD Zen 3 Cezanne, Milan, and Vermeer 41bbf21555SRichard Lowe.Pq Family 19h 42f8e9c7b3SRobert Mustacchi.It 43f8e9c7b3SRobert MustacchiAMD Zen 3+ Rembrandt 44f8e9c7b3SRobert Mustacchi.Pq Family 19h 45f8e9c7b3SRobert Mustacchi.It 46*92279cb6SRobert MustacchiAMD Zen 4 Genoa, Bergamo, Siena, Raphael, and Phoenix 47f8e9c7b3SRobert Mustacchi.Pq Family 19h 48019df03dSRobert Mustacchi.It 49*92279cb6SRobert MustacchiAmd Zen 5 Turin, Strix, Krackan, Strix Halo, and Granite Ridge 50019df03dSRobert Mustacchi.Pq Family 1ah 51bbf21555SRichard Lowe.El 52bbf21555SRichard Lowe.Pp 53bbf21555SRichard LoweThis driver is a nexus driver and facilitates access to the northbridge, 54bbf21555SRichard Lowedata fabric, and SMN between various other devices such as 55bbf21555SRichard Lowe.Xr smntemp 4D . 56bbf21555SRichard LoweThe various processor devices that make up the northbridge and data 57bbf21555SRichard Lowefabric have the 58bbf21555SRichard Lowe.Sy amdzen_stub 59bbf21555SRichard Lowedriver attached to them. 60bbf21555SRichard LoweThe different devices are all amalgamated and a single uniform view is 61bbf21555SRichard Loweprovided by the 62bbf21555SRichard Lowe.Sy amdzen 63bbf21555SRichard Lowedriver. 64bbf21555SRichard Lowe.Pp 65bbf21555SRichard LoweThe 66bbf21555SRichard Lowe.Nm 67bbf21555SRichard Lowedriver is a nexus driver that has the following children: 68bbf21555SRichard Lowe.Bl -tag -width "smntemp(4D)" 69bbf21555SRichard Lowe.It Xr smntemp 4D 70bbf21555SRichard LoweProvides access to on-die temperature sensors. 71bbf21555SRichard Lowe.It Xr usmn 4D 72bbf21555SRichard LoweProvides read access to the SMN. 73bbf21555SRichard LoweThis driver is intended for development purposes. 74bbf21555SRichard Lowe.It Xr zen_udf 4D 75bbf21555SRichard LoweProvides read access to the data fabric. 76bbf21555SRichard LoweThis driver is intended for development purposes. 77bbf21555SRichard Lowe.El 78bbf21555SRichard Lowe.Sh ARCHITECTURE 79bbf21555SRichard LoweThe 80bbf21555SRichard Lowe.Sy amdzen 81bbf21555SRichard Loweand 82bbf21555SRichard Lowe.Sy amdzen_stub 83bbf21555SRichard Lowedrivers are limited to 84bbf21555SRichard Lowe.Sy x86 85bbf21555SRichard Loweplatforms with AMD Family 17h and 19h processors. 86bbf21555SRichard Lowe.Sh SEE ALSO 87bbf21555SRichard Lowe.Xr smntemp 4D , 88bbf21555SRichard Lowe.Xr usmn 4D , 89bbf21555SRichard Lowe.Xr zen_udf 4D 90