KR20060045489A - 구성가능 pci 익스프레스 스위치 및 그 제어 방법 - Google Patents
구성가능 pci 익스프레스 스위치 및 그 제어 방법 Download PDFInfo
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- KR20060045489A KR20060045489A KR1020050028032A KR20050028032A KR20060045489A KR 20060045489 A KR20060045489 A KR 20060045489A KR 1020050028032 A KR1020050028032 A KR 1020050028032A KR 20050028032 A KR20050028032 A KR 20050028032A KR 20060045489 A KR20060045489 A KR 20060045489A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
- G06F13/4291—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus using a clocked protocol
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
Description
Claims (20)
- 구성가능 PCI 익스프레스 스위치로서,복수의 업스트림 PCI-대-PCI 포트;복수의 다운스트림 PCI-대-PCI 포트;각각의 업스트림 포트에 관련된 내부 PCI 버스; 및어느 업스트림 포트가 어느 다운스트림 포트와 통신할지를 구성하는 제어기를 포함하는 스위치.
- 제1항에 있어서, 상기 업스트림 포트들 중 소정의 하나와 통신하는 CPU는 상기 다운스트림 포트 중 임의의 것과 통신하도록 구성가능한 스위치.
- 제2항에 있어서, 각각의 상기 내부 PCI 버스는 각각의 다운스트림 포트에 연결되는 스위치.
- 제2항에 있어서, 상기 CPU는 PCI 구성 공간 레지스트리를 판독함으로써 디바이스를 발견하고, 상기 CPU에 관련된 PCI 버스 상에서 찾은 디바이스를 열거하고,상기 디바이스는 상기 업스트림 포트 중 상기 소정의 하나와 통신하는 다운스트림 포트에 연결된 스위치.
- 제4항에 있어서, 제2 CPU가 상기 CPU에 열거된 디바이스에의 액세스를 요구하면, 상기 제어기는 상기 디바이스가 연결된 다운스트림 포트를 해지하기 위한 요청을 상기 CPU에 대해 개시시키고,상기 요구가 수락되면, 상기 CPU는 상기 디바이스를 묵인하고, 상기 제어기에게 상기 다운스트림 포트의 해제를 위한 수락을 개시시키는 스위치.
- 제5항에 있어서, 상기 제어기는 상기 다운스트림 포트에게 상기 CPU에 관련된 상기 버스에서부터의 분리 시퀀스를 수행할 것을 명령하고,상기 제어기는 상기 제2 CPU에 관련된 버스로의 연결 시퀀스를 수행할 것을 명령하는 스위치.
- 제1항에 있어서, 내부 구성 제어 레지스터를 사용하여 각각의 상기 다운 스트림 포트가 어느 내부 버스에 응답해야하는지를 정의하는 스위치.
- 제1항에 있어서, 하드웨어 스트랩(strap)을 사용하여 각각의 상기 다운스트림 포트가 어느 내부 버스에 응답하는지를 정의는 스위치.
- 제1항에 있어서, 외부 구성 관리 엔티티에 의한 구성 제어를 위해 외부 구성 관리 인터페이스가 제공되는 스위치.
- 제1항에 있어서, 각각의 다운스트림 포트는 각각의 내부 PCI 버스에 연결되며,각각의 다운스트림 포트는 하나의 내부 PCI 버스에만 응답하는 스위치.
- 구성가능 PCI 익스프레스 스위치를 제어하는 방법으로서,PCI 구성 공간 레지스트리를 판독하는 단계;복수의 다운스트림 PCI-대-PCI 브릿지 중 하나를 발견하는 단계;상기 복수의 업스트림 PCI-대-PCI 브릿지 중 상기 하나에 관련된 버스를 위한 제어 인터페이스를 발견하는 단계; 및상기 버스 상에서 발견된 디바이스들을 열거하는 단계를 포함하는 방법.
- 제11항에 있어서,인터페이스를 통해 제어기로의 발견 요구를 개시시키는 단계;상기 버스 상의 각각의 디바이스에 대한 구성 공간을 판독하는 단계; 및상기 발견 요구에 의해 요청된 정보를 반환하기 위해 상기 인터페이스를 통해 응답하는 단계를 더 포함하는 방법.
- 제11항에 있어서,다운스트림 자원(resource)을 상기 복수의 CPU 중 하나에 할당하는 단계를 더 포함하며,상기 각각의 CPU들은 상기 복수의 업스트림 PCI-대-PCI 브릿지 중 상기 하나에 관련된 방법.
- 제13항에 있어서,어느 디바이스가 상기 복수의 업스트림 PCI-대-PCI 브릿지 중 상기 하나에 관련된 상기 버스에 할당되는지를 결정하기 위해 제어기에게 질의(query)하는 단계를 더 포함하는 방법.
- 제11항에 있어서,제1 CPU가 제2 CPU에 열거된 디바이스에의 액세스를 요구하면, 제어기는 상기 디바이스가 연결된 다운스트림 포트를 해제시키려는 요구를 상기 제2 CPU에 대해 개시시키고,상기 요구가 수락되면, 상기 제2 CPU는 상기 디바이스를 묵인하고 상기 다운스트림 포트의 해제를 위한 수락을 상기 제어기에 대해 개시시키는 방법.
- 제15항에 있어서, 상기 제어기는 상기 다운스트림 포트에게 상기 CPU에 관련된 상기 버스로부터의 분리 시퀀스를 수행할 것을 명령하며,상기 제어기는 상기 다운스트림 포트에게 상기 CPU에 관련된 버스로의 연결 시퀀스를 수행할 것을 명령하는 방법.
- 복수의 CPU 복합물들(complexes)을 연결하는 구성가능 PCI 익스프레스 스위치로서,각각이 상기 CPU 복합물중 하나에 연결된 복수의 업스트림 PCI-대-PCI 포트;복수의 다운스트림 PCI-대-PCI 포트;각각이 개별적인 업스트림 포트에 연결된 복수의 내부 PCI 버스; 및어느 업스트림 포트가 어느 다운스트림 포트와 통신할지를 구성하는 제어기를 포함하고,각각의 다운스트림 포트는 각각의 PCI 버스에 연결되고, 각각의 다운스트림 포트는 하나의 내부 PCI 버스에만 응답하며,상기 제어기는 각각의 CPU 복합물에 관련된 인터페이스를 통해 발견 요구를 수신하는 스위치.
- 제17항에 있어서, 상기 업스트림 포트 중 소정의 하나와 통신하는 CPU는 상기 다운스트림 포트 중 어느 것과도 통신하도록 구성될 수 있는 스위치.
- 제17항에 있어서, CPU가 제2 CPU에 열거된 디바이스에의 액세스를 요구하면, 상기 제어기는 상기 디바이스가 연결된 다운스트림 포트를 해제하기 위한 요구를 상기 제2 CPU에 대해 개시시키며,상기 요구가 수락되면, 상기 제2 CPU는 상기 디바이스를 묵인하고 상기 다운스트림 포트의 해제를 위한 수락을 상기 제어기에 대해 개시시키는 스위치.
- 제19항에 있어서, 상기 제어기는 상기 다운스트림 포트에게 상기 제2 CPU에 관련된 상기 버스에서부터의 분리 시퀀스를 수행할 것을 명령하며,상기 제어기는 상기 다운스트림 포트에게 상기 CPU에 관련된 버스로의 연결 시퀀스를 수행할 것을 명령하는 스위치.
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US10/834,138 US7058738B2 (en) | 2004-04-28 | 2004-04-28 | Configurable PCI express switch which allows multiple CPUs to be connected to multiple I/O devices |
US10/834,138 | 2004-04-28 |
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KR20060045489A true KR20060045489A (ko) | 2006-05-17 |
KR100796419B1 KR100796419B1 (ko) | 2008-01-21 |
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US (1) | US7058738B2 (ko) |
EP (1) | EP1591910B1 (ko) |
JP (1) | JP4095078B2 (ko) |
KR (1) | KR100796419B1 (ko) |
CN (1) | CN100573481C (ko) |
AT (1) | ATE421727T1 (ko) |
DE (1) | DE602005012453D1 (ko) |
TW (1) | TWI364663B (ko) |
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EP1591910B1 (en) | 2009-01-21 |
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CN100573481C (zh) | 2009-12-23 |
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