JP6155507B2 - メモリ管理を有するコンピューティングプラットフォームインターフェース - Google Patents
メモリ管理を有するコンピューティングプラットフォームインターフェース Download PDFInfo
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Description
Claims (19)
- コンピューティングプラットフォームであって、
PPM(Performance and Power Management)インターフェースのOS PPMコンポーネントを含むオペレーティングシステム(OS)の命令を有する第1のメモリストレージデバイスと、
PPMインターフェースのファームウェアPPMコンポーネントを含むファームウェアブートプログラムの命令を有する第2のメモリストレージデバイスであって、前記OS及びファームウェアPPM命令は、実行されると、前記OSとプラットフォームハードウェアとの間にPPMインターフェースを確立する、第2のメモリストレージデバイスと、
物理メモリに結合されたメモリコントローラであって、前記物理メモリを前記OSに提供するとともに、前記OSが前記PPMインターフェースを介して前記物理メモリの1つ又は複数のノードの電力状態を制御することを可能にする、メモリコントローラと
を備え、
前記OS PPMコンポーネントは、メモリ電力状態管理を実装するための複数のメモリ電力状態テーブル(MPST)データ構造体を識別し、
前記MPSTデータ構造体は、前記OSによる書込に利用可能でないファームウェア専用メモリ空間に格納され、
前記PPMインターフェースは、PPMレジスタと、ファームウェアPPMコンポーネントと、前記MPSTデータ構造体を含むPPMテーブルとを有して、前記1つまたは複数のノードが不連続なメモリアドレス範囲を含むことを可能にし、
メモリ電力ノードが2つ以上の不連続なメモリアドレス範囲を含む場合、前記ファームウェアPPMコンポーネントは、前記メモリアドレス範囲のそれぞれについてメモリ電力ノード構造体を構築するが、前記メモリ電力ノードに含まれる前記メモリ電力ノード構造体に同一のメモリ電力ノードIDを指定し、
前記メモリ電力ノードは、メモリ電力状態の内外に一単位として遷移することができる論理メモリ領域の表現であり、
プラットフォーム制御チャネル(PCC)が前記OSおよびハードウェア機能との間で通信すべく前記PPMインターフェースによって実装される、コンピューティングプラットフォーム。 - 前記物理メモリは揮発性メモリである、請求項1に記載のコンピューティングプラットフォーム。
- 前記PPMインターフェースは、前記1つまたは複数のノードが不連続なメモリアドレス範囲を含むことを可能にする、請求項1又は2に記載のコンピューティングプラットフォーム。
- 前記PPMインターフェースは、前記物理メモリが複数のメモリノードに分割されることを容易にする、請求項1から3の何れか1項に記載のコンピューティングプラットフォーム。
- 前記PPMインターフェースは、前記OSが、前記複数のメモリノードを種々の電力状態にすることを可能にする、請求項4に記載のコンピューティングプラットフォーム。
- 前記種々の電力状態は、アクティブなMP0状態、低アクティブなMP1状態、及び更に低アクティブなMP2状態を含む、請求項5に記載のコンピューティングプラットフォーム。
- 前記PPMインターフェースは、MP1状態からMP2状態に遷移するには、前記複数のメモリノードがMP1状態からMP0状態に遷移し、更にMP2状態に遷移しなければならないことを定義する、請求項6に記載のコンピューティングプラットフォーム。
- 前記PPMインターフェースは、ACPI仕様に従ったものである、請求項1に記載のコンピューティングプラットフォーム。
- 前記PPMインターフェースは、メモリトポロジを前記OSに記述するプラットフォームメモリトポロジテーブル(PMTT)を含む、請求項8に記載のコンピューティングプラットフォーム。
- 前記物理メモリは、サーバープラットフォームにおける複数のメモリ構造体を含む、請求項1に記載のコンピューティングプラットフォーム。
- 装置であって、
ACPIインターフェースのメモリ電力状態テーブル(MPST)データ構造体を構築するACPIコンポーネントを含むファームウェアを有するコンピュータープラットフォーム、
を備え、
前記MPSTデータ構造体は、オペレーティングシステム(OS)による書込に利用可能でないファームウェア専用メモリ空間に格納され、前記OSは、前記ACPIインターフェースを介して物理メモリの1つ又は複数のノードの電力状態を制御し、
前記ACPIインターフェースは、PPM(Performance and Power Management)レジスタと、ファームウェアPPMコンポーネントと、前記MPSTデータ構造体を含むPPMテーブルとを有して、前記1つまたは複数のノードが不連続なメモリアドレス範囲を含むことを可能にし、
メモリ電力ノードが2つ以上の不連続なメモリアドレス範囲を含む場合、前記ファームウェアPPMコンポーネントは、前記メモリアドレス範囲のそれぞれについてメモリ電力ノード構造体を構築するが、前記メモリ電力ノードに含まれる前記メモリ電力ノード構造体に同一のメモリ電力ノードIDを指定し、
前記メモリ電力ノードは、メモリ電力状態の内外に一単位として遷移することができる論理メモリ領域の表現であり、
プラットフォーム制御チャネル(PCC)が前記OSおよびハードウェア機能との間で通信すべく前記ACPIインターフェースによって実装される、装置。 - 前記MPST構造体は、電力状態値を有するテーブルを含む、請求項11に記載の装置。
- 前記MPST構造体は、前記コンピュータープラットフォームにおけるメモリのメモリ電力ノード構造体の定義を有するテーブルを含む、請求項11又は12に記載の装置。
- 前記MPST構造体は、メモリ電力状態構造体定義を有するテーブルを含む、請求項11〜13のいずれか一項に記載の装置。
- 前記MPST構造体は、共通のメモリアグリゲーターデバイス構造体を含む、請求項11〜14のいずれか一項に記載の装置。
- 前記コンピュータープラットフォームは、スマートフォン、タブレット、及びサーバーコンピューターのうちの1つであるコンピューティングデバイスである、請求項11〜15のいずれか一項に記載の装置。
- 装置であって、
PPM(Performance and Power Management)インターフェースを組み込むオペレーティングシステム(OS)を有するコンピューターと、
前記OSに利用可能な物理メモリであって、前記OSは、前記PPMインターフェースを介して前記物理メモリの電力状態を管理する、物理メモリと
を備え、
前記PPMインターフェースは、メモリ電力状態管理を実装するための複数のメモリ電力状態テーブル(MPST)データ構造体を識別するOS PPMコンポーネントを有し、
前記MPSTデータ構造体は、前記OSによる書込に利用可能でないファームウェア専用メモリ空間に格納され、
前記OSは、前記PPMインターフェースを介して前記物理メモリの1つ又は複数のノードの電力状態を制御し、
前記PPMインターフェースは、PPMレジスタと、ファームウェアPPMコンポーネントと、前記MPSTデータ構造体を含むPPMテーブルとを有して、前記1つまたは複数のノードが不連続なメモリアドレス範囲を含むことを可能にし、
メモリ電力ノードが2つ以上の不連続なメモリアドレス範囲を含む場合、前記ファームウェアPPMコンポーネントは、前記メモリアドレス範囲のそれぞれについてメモリ電力ノード構造体を構築するが、前記メモリ電力ノードに含まれる前記メモリ電力ノード構造体に同一のメモリ電力ノードIDを指定し、
前記メモリ電力ノードは、メモリ電力状態の内外に一単位として遷移することができる論理メモリ領域の表現であり、
プラットフォーム制御チャネル(PCC)が前記OSおよびハードウェア機能との間で通信すべく前記PPMインターフェースによって実装される、装置。 - 前記PPMは、ACPI仕様に従ったものである、請求項17に記載の装置。
- 前記物理メモリは、ノードが前記物理メモリの少なくとも1つのアドレス範囲を含むノード構造体を介して制御される、請求項18に記載の装置。
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