743844-015.pdf - 第60页

A V olume Management Device (VMD) exposes a single device to the oper ating system, which will load a single storage driver . The VMD resides in the processor's PCIe root complex and it appears to the OS as a root b…

Integrated Reference Clock PLL

The processor includes a phase lock loop (PLL) that generates the reference clock for

the processor from a fixed crystal clock. The processor reference clock is also referred

to as Base Clock or BCLK.

By integrating the BCLK PLL into the processor die, a cleaner clock is achieved at a

lower power compared to the legacy PCH BCLK PLL solution.

The BCLK PLL has controls for RFI/EMI mitigations as well as Overclocking capabilities.

Intel Volume Management Device Technology

Objective

Standard Operating Systems generally recognize individual PCIe Devices and load

individual drivers. This is undesirable in some cases such as, for example, when there

are several PCIe-based hard-drives connected to a platform where the user wishes to

configure them as part of a RAID array. The Operating System current treats

individual hard-drives as separate volumes and not part of a single volume.

In other words, the Operating System requires multiple PCIe devices to have multiple

driver instances, making volume management across multiple host bus adapters

(HBAs) and driver instances difficult.

Intel Volume Management Device (VMD) technology provides a means to provide

volume management across separate PCI Express HBAs and SSDs without requiring

operating system support or communication between drivers. For example, the OS will

see a single RAID volume instead of multiple storage volumes, when Volume

Management Device is used.

Overview

Intel Volume Management Device technology does this by obscuring each storage

controller from the OS, while allowing a single driver to be loaded that would control

each storage controller.

Intel Volume Management technology requires support in BIOS and driver, memory

and configuration space management.

2.7.1

2.8

Technologies—Intel

Core

™

, Xeon

™

6300 And Xeon

™

E 2400 Processors

Generation Intel

Core

™

, Intel

Core

™

Generation, Intel

Core

™

Processor (Series 1) and (Series 2), Intel

Xeon

™

2400 Processor and Intel

Xeon

™

6300 Processor

May 2025 Datasheet, Volume 1 of 2

Doc. No.: 743844, Rev.: 015 59

A Volume Management Device (VMD) exposes a single device to the operating system,

which will load a single storage driver. The VMD resides in the processor's PCIe root

complex and it appears to the OS as a root bus integrated endpoint. In the processor,

the VMD is in a central location to manipulate access to storage devices which may be

attached directly to the processor or indirectly through the PCH. Instead of allowing

individual storage devices to be detected by the OS and therefore causing the OS to

load a separate driver instance for each, VMD provides configuration settings to allow

specific devices and root ports on the root bus to be invisible to the OS.

Access to these hidden target devices is provided by the VMD to the single, unified

driver.

Features Supported

Supports MMIO mapped Configuration Space (CFGBAR):

• Supports MMIO Low

• Supports MMIO High

• Supports Register Lock or Restricted Access

Intel

Core

™

, Xeon

™

6300 And Xeon

™

E 2400 Processors—Technologies

Generation Intel

Core

™

, Intel

Core

™

Generation, Intel

Core

™

Processor (Series 1) and (Series 2), Intel

Xeon

™

2400 Processor and Intel

Xeon

™

6300 Processor

Datasheet, Volume 1 of 2 May 2025

60 Doc. No.: 743844, Rev.: 015

• Supports Device Assign

• Function Assign

• MSI Remapping Disable

Deprecated Technologies

The processor has deprecated the following technologies and they are no longer

supported:

• Intel

Memory Protection Extensions (Intel

MPX)

• Branch Monitoring Counters

• Hardware Lock Elision (HLE), part of Intel

TSX-NI

• Intel

Software Guard Extensions (Intel

SGX)

• Intel

TSX-NI

• Power Aware Interrupt Routing (PAIR)

• DDR Running Average Power Limit (DDR RAPL)

Processor Lines that support Intel's Performance Hybrid Architecture do not

support the following:

• Intel

Advanced Vector Extensions 512 Bit

2.9

Technologies—Intel

Core

™

, Xeon

™

6300 And Xeon

™

E 2400 Processors

Generation Intel

Core

™

, Intel

Core

™

Generation, Intel

Core

™

Processor (Series 1) and (Series 2), Intel

Xeon

™

2400 Processor and Intel

Xeon

™

6300 Processor

May 2025 Datasheet, Volume 1 of 2

Doc. No.: 743844, Rev.: 015 61