JP2018022497A - 不揮発性大容量メモリ・システムによるキャッシュ移動を提供するための装置および方法 - Google Patents
不揮発性大容量メモリ・システムによるキャッシュ移動を提供するための装置および方法 Download PDFInfo
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Abstract
Description
CPU 中央処理装置
DMA ダイレクト・メモリ・アクセス
eMMC 組込み型マルチメディア・カード
exFAT 拡張ファイル・アロケーション・テーブル
HW ハードウェア
JEDEC 電子素子技術連合評議会
LBA 論理ブロック・アドレス
MMC マルチメディア・カード
MRAM 磁気ランダム・アクセス・メモリ
RAM ランダム・アクセス・メモリ
SCSI 小型コンピュータ・システム・インタフェース
SD セキュア・デジタル
SW ソフトウェア
UFS ユニバーサル・フラッシュ・ストレージ
(4)UFSホスト・コントローラ13は、この(書込み)コマンド・セットをUFSメモリ・モジュール20に転送する。UFSメモリ・モジュール20に局在的に書き込まれたコマンドに関連するデータを処理することができないとUFSメモリ・モジュール20が判断すると、仮定する。この点に関して、留意すべき点は、例えば、書込みコマンド(複数の書込みコマンド)の実行の緊急性を強調するために、コマンドに関連するイニシエータによるキュー指示のヘッドがあり、UFSメモリ・モジュール20は、現在のところ、指示された緊急レベルを満たすことができないと判断する場合があるということである。
1) コマンドの種類(移動(move)、フィル(fill));
2) フィル・データ(全(all)0,全(all)1,01シーケンス(sequence)、...)、オプション;
3) 宛先アドレス(フィル、移動)および送信元アドレス(移動)、アドレスは実装に依存;
4) 動作サイズ(細分性は実装に依存)。
1) コマンド(フィル(fill)0、フィル(fill)1、...、フィル_パターン(fill_pattern)、移動(move)を配信;
2) 宛先アドレス(バンク(bank)、ロー(row)、カラム(column)、バイト(byte))を配信;
3) 送信元アドレス(バンク(bank)、ロー(row)、カラム(column)、バイト(byte))を配信;
4) 動作サイズを配信。
Claims (25)
- メモリ・モジュールのメモリ・コントローラでコマンドを受信するステップであって、前記コマンドは、ホスト装置のメモリに存在するデータを、ホスト装置に結合された前記メモリ・モジュールの不揮発性大容量メモリに書き込むためのものである、ステップと、
前記メモリ・モジュールの前記メモリ・コントローラにより、前記ホスト装置の前記メモリの第1の場所に存在する前記データを、前記ホスト装置の前記メモリの第2の場所へ書き込みすることを開始するステップであって、前記ホスト装置の前記メモリの前記第2の場所が、少なくとも、前記メモリ・モジュールによる読み取りおよび書き込みのために割り当てられる、ステップと、
前記データを前記不揮発性大容量メモリに書き込むための前記コマンドが実行されたという肯定応答を、前記メモリ・モジュールの前記メモリ・コントローラによって、提供するステップと、
を含む方法。 - 前記肯定応答を提供する前記ステップに続いて、前記ホスト装置の前記メモリの前記第2の場所に存在する前記データを、前記不揮発性大容量メモリに、さらに書き込みをすることを開始するステップをさらに含む、請求項1に記載の方法。
- 前記データの前記書き込みをすることは、少なくとも、前記メモリ・モジュールによる読み取りおよび書き込みのために割り当てられる、前記ホスト装置の前記メモリの前記第2の場所への前記データの移動を含む、請求項1に記載の方法。
- 前記コマンドのイニシエータが、前記ホスト装置に接続された周辺機器として具現化される、請求項1に記載の方法。
- ホスト・コントローラと、装置を不揮発性大容量メモリ・モジュールに接続するためのインタフェースと、を備えた装置であって、
前記ホスト・コントローラが、ホスト装置のメモリに存在するデータを、前記不揮発性大容量メモリ・モジュールに書き込むために第1コマンドを処理し、
前記ホスト装置の前記メモリの第1の場所に存在する前記データを、前記不揮発性大容量メモリ・モジュールによる読み取りおよび書き込みのために割り当てられる、前記ホスト装置の前記メモリの第2の場所に書き込むために、前記不揮発性大容量メモリ・モジュールのメモリ・コントローラからの第2コマンドを処理し、
前記データを前記不揮発性大容量メモリ・モジュールに書き込むための前記コマンドが
実行されたことを示す肯定応答を受信するように構成されている、
装置。 - 前記ホスト・コントローラが、前記データを前記不揮発性大容量メモリ・モジュールに書き込むための前記コマンドが実行されたという前記肯定応答の前記受信に続いて、前記データを前記不揮発性大容量メモリ・モジュールに実際に書き込むようにさらに構成されている、請求項5に記載の装置。
- 前記データの前記不揮発性大容量メモリ・モジュールへの前記書き込みが、前記不揮発性大容量メモリ・モジュールの前記メモリ・コントローラによって開始される、請求項6に記載の装置。
- 前記メモリの動作は、
所定値に複数の指定されたメモリ・ロケーションを設定するデータ・フィル動作、
第1の複数の指定されたメモリ・ロケーションから第2の複数の指定されたメモリ・ロケーションに移動するデータ移動動作
のうち1つであり、
前記データ移動動作が、前記第1の複数の指定されたメモリ・ロケーションを所定値に設定することをさらに含む、請求項5に記載の装置。 - 前記ホスト・コントローラが、少なくとも前記不揮発性大容量メモリ・モジュールによって使用される前記ホスト装置の前記メモリの前記第2の場所へ前記データを物理的または論理的のいずれかで移動するようにさらに構成される、請求項5に記載の装置。
- イニシエータは、前記ホスト装置に接続された周辺機器として具現化される、請求項5に記載の装置。
- 前記ホスト装置の前記メモリが、前記ホスト装置の前記メモリにおいて、メモリの動作を自律的に実行するように構成されたダイナミック・ランダム・アクセス・メモリを備える、請求項5に記載の装置。
- 前記ホスト・コントローラが、前記不揮発性大容量メモリ・モジュールに割り当てられた前記ホスト装置の前記メモリの前記第2の場所に存在する前記データを、前記ホスト装置の前記メモリの第3の場所にさらに書き込むようにさらに構成され、
前記さらなる書き込みが、前記不揮発性大容量メモリ・モジュールから前記データを読み取るための別のコマンドに応答する、請求項5に記載の装置。 - 前記さらなる書き込みが、前記不揮発性大容量メモリ・モジュールの前記メモリ・コントローラによって開始される、請求項12に記載の装置。
- 前記肯定応答が、前記不揮発性大容量メモリ・モジュールの前記メモリ・コントローラによって開始される、請求項5に記載の装置。
- 前記ホスト装置の前記メモリの前記第1の場所に存在する前記データの、少なくとも前記不揮発性大容量メモリによって使用される前記ホスト装置の前記メモリの前記第2の場所への書き込みが、前記不揮発性大容量メモリ・モジュールの前記メモリ・コントローラによって開始される、請求項5に記載の装置。
- 前記ホスト装置が、双方向無線通信を実行するように構成された携帯装置を含む、請求項5に記載の装置。
- 書き込みのための前記第1コマンドの処理は、書き込みのための前記第1コマンドを前記不揮発性大容量メモリ・モジュールの前記メモリ・コントローラに、送ることを含む、
請求項5に記載の装置。 - メモリ・コントローラと、前記メモリ・コントローラによって読み取りおよび書き込みが可能な不揮発性大容量メモリと、メモリ・モジュールをホスト装置に接続するためのインタフェースと、を備えるメモリ・モジュールであって、
前記メモリ・コントローラが、
前記ホスト装置の前記メモリからのデータを前記不揮発性大容量メモリに書き込むコマンドを受信し、
前記ホスト装置の前記システム・メモリの第1の場所に存在する前記データを、前記ホスト装置の前記システム・メモリの第2の場所へ書き込みすることを開始し、ここで、前記第2の場所は、少なくとも、前記メモリ・モジュールによる読み取りおよび書き込みのために割り当てられたものであり、
前記データを前記不揮発性大容量メモリに書き込むための前記コマンドが実行されたという肯定応答を送るように構成される、
メモリ・モジュール。 - 前記メモリ・コントローラが、前記データを前記不揮発性大容量メモリに書き込むための前記コマンドが実行されたという前記肯定応答の前記提供に続いて、前記データの前記メモリ・モジュールへの書き込みを開始するようにさらに構成される、請求項18に記載のメモリ・モジュール。
- 前記第2の場所への前記データの前記書き込みは、少なくとも、前記メモリ・モジュールによる使用に割り当てられた前記ホスト装置の前記システム・メモリの前記第2の場所への前記データの移動を含む、請求項18に記載のメモリ・モジュール。
- 前記第2の場所への前記データの前記書き込みは、少なくとも前記メモリ・モジュールによる使用に割り当てられた前記ホスト装置の前記システム・メモリの前記第2の場所への前記データの論理的移動を含み、
前記論理的移動は、
前記データを指し示すポインターのメモリ・アドレス・ポインター値の変更、および、
前記データのヘッダのヘッダ値の変更
のうちの少なくとも1つを含む、
請求項18に記載のメモリ・モジュール。 - 前記メモリ・コントローラが、
前記不揮発性大容量メモリからの前記データを読み取るための別のコマンドに応答して、前記不揮発性大容量メモリによる使用に割り当てられた前記ホスト装置の前記システム・メモリの前記第2の場所から、前記別のコマンドのイニシエータと関連する前記ホスト装置の前記システム・メモリの第3の場所への、前記データのさらなる書き込みを開始するようにさらに構成される、
請求項18に記載のメモリ・モジュール。 - 前記コマンドのイニシエータと、前記別のコマンドの前記イニシエータと
が同じである、請求項22に記載のメモリ・モジュール。 - 前記第1の場所と前記第3の場所とが同じである、請求項22に記載のメモリ・モジュール。
- 前記コマンドのイニシエータは、前記ホスト装置に接続された周辺機器として具現化される、請求項18に記載のメモリ・モジュール。
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