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51. 发明申请

US20060179226A1 System and method of re-ordering store operations within a processor 失效
标题翻译：在处理器内重新排序存储操作的系统和方法
公开(公告)号：US20060179226A1
公开(公告)日：2006-08-10
申请号：US11054450
申请日：2005-02-09
申请人： Guy Guthrie , Hugh Shen , William Starke , Derek Williams
发明人： Guy Guthrie , Hugh Shen , William Starke , Derek Williams
IPC分类号： G06F12/00
CPC分类号： G06F9/3834 , G06F9/30043 , G06F9/3824 , G06F12/0817
摘要： A system and method for re-ordering store operations from a processor core to a store queue. When a store queue receives a new processor-issued store operation from the processor core, a store queue controller allocates a new entry in the store queue. In response to allocating the new entry in the store queue, the store queue controller determines whether or not the new entry is dependent on at least one other valid entry in the store queue. In response to determining the new entry is dependent on at least one other valid entry in the store queue, the store queue controller inhibits requesting of the new entry to the RC dispatch logic until each valid entry on which the new entry is dependent has been successfully dispatched to an RC machine by the RC dispatch logic.
摘要翻译：一种用于重新排序从处理器核到存储队列的存储操作的系统和方法。当存储队列从处理器核心接收到新的处理器发出的存储操作时，存储队列控制器在存储队列中分配新的条目。响应于在商店队列中分配新条目，商店队列控制器确定新条目是否依赖于商店队列中的至少一个其他有效条目。响应于确定新条目取决于存储队列中的至少一个其他有效条目，存储队列控制器禁止向RC调度逻辑请求新条目，直到新条目依赖于其上的每个有效条目已经成功通过RC调度逻辑调度到RC机器。

52. 发明申请

US20060085604A1 Processor, data processing system and method for synchronizing access to data in shared memory 失效
标题翻译：处理器，数据处理系统和方法，用于同步共享存储器中数据的访问
公开(公告)号：US20060085604A1
公开(公告)日：2006-04-20
申请号：US10965144
申请日：2004-10-14
申请人： Guy Guthrie , Sheldon Levenstein , William Starke , Derek Williams
发明人： Guy Guthrie , Sheldon Levenstein , William Starke , Derek Williams
IPC分类号： G06F12/00
CPC分类号： G06F12/0811 , G06F9/3004 , G06F9/30072 , G06F9/30087 , G06F9/3834 , G06F9/3851 , G06F12/0855
摘要： A processing unit for a multiprocessor data processing system includes a processor core including a store-through upper level cache, an instruction sequencing unit that fetches instructions for execution, a data register, and at least one instruction execution unit coupled to the instruction sequencing unit that concurrently executes multiple threads of instructions. The processor core, responsive to the at least one instruction execution unit executing a load-reserve instruction in a first thread that binds to a load target address in the store-through upper level cache during a reservation hazard window associated with a conflicting store-conditional operation of a second thread, causes a subsequent store-conditional operation of the first thread to a store target address matching the load target address to fail if the store-conditional operation of the second thread succeeds.
摘要翻译：一种用于多处理器数据处理系统的处理单元，包括处理器核心，该处理器核心包括通过存储的上级高速缓存，指令执行指令排序单元，数据寄存器以及耦合到指令排序单元的至少一个指令执行单元，同时执行多个指令线程。所述处理器核心响应于所述至少一个指令执行单元在与冲突存储条件相关联的预留危险窗口期间执行在所述存储通过上级高速缓存中的绑定到加载目标地址的第一线程中的加载保留指令如果第二线程的存储条件操作成功，则第二线程的操作使得第一线程的后续存储条件操作到与加载目标地址匹配的存储目标地址失败。

53. 发明申请

US20050251623A1 Method for completing full cacheline stores with address-only bus operations 有权
标题翻译：完成具有仅地址总线操作的完整缓存线存储的方法
公开(公告)号：US20050251623A1
公开(公告)日：2005-11-10
申请号：US10825189
申请日：2004-04-15
申请人： Ravi Arimilli , Guy Guthrie , Hugh Shen , Derek Williams
发明人： Ravi Arimilli , Guy Guthrie , Hugh Shen , Derek Williams
IPC分类号： G06F12/00 , G06F12/08
CPC分类号： G06F12/0897 , G06F12/0804
摘要： A method and processor system that substantially eliminates data bus operations when completing updates of an entire cache line with a full store queue entry. The store queue within a processor chip is designed with a series of AND gates connecting individual bits of the byte enable bits of a corresponding entry. The AND output is fed to the STQ controller and signals when the entry is full. When full entries are selected for dispatch to the RC machines, the RC machine is signaled that the entry updates the entire cache line. The RC machine obtains write permission to the line, and then the RC machine overwrites the entire cache line. Because the entire cache line is overwritten, the data of the cache line is not retrieved when the request for the cache line misses at the cache or when data goes state before write permission is obtained by the RC machine.
摘要翻译：一种方法和处理器系统，其在完成具有完整存储队列条目的整个高速缓存行的更新时基本上消除数据总线操作。处理器芯片内的存储队列设计有连接相应条目的字节使能位的各个位的一系列与门。 AND输出被馈送到STQ控制器，并在条目已满时发出信号。当选择完整条目以发送到RC机器时，RC机器发出信号，表示该条目更新整个高速缓存行。 RC机器获得线路的写入权限，然后RC机器覆盖整个高速缓存行。由于整个高速缓存线被覆盖，当缓存线的请求在高速缓存中丢失时或在RC机器获得写入许可之前数据进入状态时，不会检索高速缓存行的数据。

54. 发明申请

US20070250669A1 DATA PROCESSING SYSTEM, PROCESSOR AND METHOD OF DATA PROCESSING THAT REDUCE STORE QUEUE ENTRY UTILIZATION FOR SYNCHRONIZING OPERATIONS 失效
标题翻译：数据处理系统，处理器和数据处理方法减少存储队列进入同步操作的使用
公开(公告)号：US20070250669A1
公开(公告)日：2007-10-25
申请号：US11380020
申请日：2006-04-25
申请人： Ravi Arimilli , Thomas Capasso , Robert Cargnoni , Guy Guthrie , Hugh Shen , William Starke
发明人： Ravi Arimilli , Thomas Capasso , Robert Cargnoni , Guy Guthrie , Hugh Shen , William Starke
IPC分类号： G06F13/00
CPC分类号： G06F9/3842 , G06F9/3851 , G06F9/544
摘要： A data processing system includes a processor core and a memory subsystem. The memory subsystem includes a store queue having a plurality of entries, where each entry includes an address field for holding the target address of store operation, a data field for holding data for the store operation, and a virtual sync field indicating a presence or absence of a synchronizing operation associated with the entry. The memory subsystem further includes a store queue controller that, responsive to receipt at the memory subsystem of a sequence of operations including a synchronizing operation and a particular store operation, places a target address and data of the particular store operation within the address field and data field, respectively, of an entry in the store queue and sets the virtual sync field of the entry to represent the synchronizing operation, such that a number of store queue entries utilized is reduced.
摘要翻译：数据处理系统包括处理器核心和存储器子系统。存储器子系统包括具有多个条目的存储队列，其中每个条目包括用于保存存储操作的目标地址的地址字段，用于保存用于存储操作的数据的数据字段和指示存在或不存在的虚拟同步字段与该条目相关联的同步操作。存储器子系统还包括存储队列控制器，其响应于在存储器子系统处的接收包括同步操作和特定存储操作的一系列操作，将特定存储操作的目标地址和数据放置在地址字段和数据中字段，并且设置条目的虚拟同步字段以表示同步操作，使得减少使用的存储队列条目的数量。

55. 发明申请

US20070079216A1 Fault tolerant encoding of directory states for stuck bits 有权
标题翻译：卡位的目录状态的容错编码
公开(公告)号：US20070079216A1
公开(公告)日：2007-04-05
申请号：US11225570
申请日：2005-09-13
申请人： Robert Bell , Guy Guthrie , William Starke
发明人： Robert Bell , Guy Guthrie , William Starke
IPC分类号： G11C29/00
CPC分类号： G11C29/832 , G06F11/1064
摘要： A method of handling a stuck bit in a directory of a cache memory, by defining multiple binary encodings to indicate a defective cache state, detecting an error in a tag stored in a member of the directory (wherein the tag at least includes an address field, a state field and an error-correction field), determining that the error is associated with a stuck bit of the directory member, and writing new state information to the directory member which is selected from one of the binary encodings based on a field location of the stuck bit within the directory member. The multiple binary encodings may include a first binary encoding when the stuck bit is in the address field, a second binary encoding when the stuck bit is in the state field, and a third binary encoding when the stuck bit is in the error-correction field. The new state information may also further be selected based on the value of the stuck bit, e.g., a state bit corresponding to the stuck bit is assigned a bit value from the new state information which matches the value of the stuck bit.
摘要翻译：一种通过定义多个二进制编码来指示缺陷高速缓存状态来处理高速缓冲存储器的目录中的卡住位的方法，检测存储在目录成员中的标签中的错误（其中标签至少包括地址字段，状态字段和纠错字段），确定错误与目录成员的卡住位相关联，并且基于字段位置将新状态信息写入从二进制编码之一中选择的目录成员的目录成员中的卡住位。多个二进制编码可以包括当卡住位在地址字段中时的第一二进制编码，当卡位位于状态字段时的第二二进制编码，以及当卡位位于错误校正字段中时的第三二进制编码。还可以基于卡住位的值进一步选择新的状态信息，例如，对应于该卡住位的状态位从与该卡位的值匹配的新状态信息中分配一位值。

56. 发明申请

US20060184746A1 Reducing number of rejected snoop requests by extending time to respond to snoop request 失效
标题翻译：通过延长响应窥探请求的时间来减少被拒绝的窥探请求数
公开(公告)号：US20060184746A1
公开(公告)日：2006-08-17
申请号：US11056679
申请日：2005-02-11
申请人： Guy Guthrie , Hugh Shen , William Starke , Derek Williams
发明人： Guy Guthrie , Hugh Shen , William Starke , Derek Williams
IPC分类号： G06F13/28
CPC分类号： G06F13/1605 , G06F12/0831
摘要： A cache, system and method for reducing the number of rejected snoop requests. A “stall/reorder unit” in a cache receives a snoop request from an interconnect. The snoop request is entered in the first available latch of the stall/reorder unit unless the stall/reorder unit is full in which case the new snoop request is transmitted to a second unit configured to transmit a request to retry resending the new snoop request. Snoop requests have a higher priority than requests from processors and snoop requests are selected by the arbitration mechanism over processor requests unless the arbitration mechanism requests otherwise (“stall request”) to the stall/reorder unit. By snoop requests having a higher priority than processor requests, the number of snoop requests rejected is reduced. By having the arbitration mechanism issue a stall request, the processor will not be starved.
摘要翻译：用于减少拒绝的窥探请求数量的缓存，系统和方法。缓存中的“停止/重新排序单元”从互连中接收窥探请求。监听请求被输入到停止/重新排序单元的第一可用锁存器中，除非停止/重新排序单元已满，在这种情况下，新的窥探请求被发送到被配置为发送重新发送新的窥探请求的请求的第二单元。侦听请求具有比来自处理器的请求更高的优先级，并且仲裁机制通过处理器请求选择侦听请求，除非仲裁机制另请求（“停止请求”）到停止/重新排序单元。通过具有比处理器请求更高优先级的侦听请求，减少了被拒绝的侦听请求的数量。通过使仲裁机制发出停顿请求，处理器不会饿死。

57. 发明申请

US20060184743A1 Cache memory direct intervention 失效
标题翻译：缓存内存直接干预
公开(公告)号：US20060184743A1
公开(公告)日：2006-08-17
申请号：US11056673
申请日：2005-02-12
申请人： Guy Guthrie , William Starke , Derek Williams
发明人： Guy Guthrie , William Starke , Derek Williams
IPC分类号： G06F12/00
CPC分类号： G06F12/0897 , G06F12/0831 , G06F12/127
摘要： A method, system, and device for enabling intervention across same-level cache memories. In a preferred embodiment, responsive to a cache miss in a first cache memory a direct intervention request is sent from the first cache memory to a second cache memory requesting a direct intervention that satisfies the cache miss.
摘要翻译：一种用于实现跨层级高速缓冲存储器的干预的方法，系统和设备。在优选实施例中，响应于第一高速缓冲存储器中的高速缓存未命中，直接干预请求从第一高速缓存存储器发送到第二高速缓存存储器，请求满足高速缓存未命中的直接干预。

58. 发明申请

US20060179242A1 Data processing system and method for handling castout collisions 有权
标题翻译：数据处理系统及其处理方法
公开(公告)号：US20060179242A1
公开(公告)日：2006-08-10
申请号：US11054888
申请日：2005-02-10
申请人： Sanjeev Ghai , Guy Guthrie , John Hollaway
发明人： Sanjeev Ghai , Guy Guthrie , John Hollaway
IPC分类号： G06F12/00
CPC分类号： G06F12/0817 , G06F12/0831
摘要： A data processing system includes a memory controller of a system memory that receives first and second castout operations both specifying a same address. In response to receiving said first and second castout operations, the memory controller performs a single update to the system memory.
摘要翻译：数据处理系统包括系统存储器的存储器控制器，其接收指定相同地址的第一和第二突变操作。响应于接收到所述第一和第二停顿操作，存储器控制器对系统存储器执行单次更新。

59. 发明申请

US20050193174A1 System bus read data transfers with data ordering control bits 失效
标题翻译：系统总线使用数据排序控制位读取数据传输
公开(公告)号：US20050193174A1
公开(公告)日：2005-09-01
申请号：US11041711
申请日：2005-01-22
申请人： Ravi Arimilli , Vicente Chung , Guy Guthrie , Jody Joyner
发明人： Ravi Arimilli , Vicente Chung , Guy Guthrie , Jody Joyner
IPC分类号： G06F12/08 , G06F12/00
CPC分类号： G06F12/0831
摘要： A method for informing a processor of a selected order of transmission of data to the processor. The method comprises the steps of coupling system components via a data bus to the processor to effectuate data transfer, determining at the system component logic the order in which to transmit data to the processor, and issuing to the data bus a selected order bit concurrent with the data, wherein the selected order bit alerts the processor of the order and the data is transmitted in that order. In a preferred embodiment, the system component is the cache and the method may involve receiving at the cache a preference of ordering for a read address/request from the processor. The preference order logic of the cache controller or a preference order logic component evaluates the preference of ordering desired by comparing the processor preference with other preferences, including cache order preference. One preference order is selected and the data is then retrieved from a cache line of the cache in the order selected.
摘要翻译：一种用于向处理器通知所选择的数据传输顺序的处理器的方法。该方法包括以下步骤：将系统组件经由数据总线耦合到处理器以实现数据传输，在系统组件逻辑处确定将数据发送到处理器的顺序，以及向数据总线发出与数据，其中所选择的订单位向处理器提醒订单，并且以该顺序传送数据。在优选实施例中，系统组件是高速缓存，并且该方法可以涉及在高速缓存处接收对来自处理器的读取地址/请求的排序的偏好。高速缓存控制器或偏好顺序逻辑组件的偏好顺序逻辑通过将处理器偏好与其他偏好（包括高速缓存顺序偏好）进行比较来评估期望的顺序的偏好。选择一个偏好顺序，然后以所选顺序从高速缓存的高速缓存行检索数据。

60. 发明申请

US20080091885A1 Data Processing System and Method for Efficient L3 Cache Directory Management 有权
公开(公告)号：US20080091885A1
公开(公告)日：2008-04-17
申请号：US11956102
申请日：2007-12-13
申请人： Guy Guthrie , William Starke , Derek Williams , Philip Williams
发明人： Guy Guthrie , William Starke , Derek Williams , Philip Williams
IPC分类号： G06F13/00
CPC分类号： G06F12/0811 , G06F12/0831 , G06F12/128 , G06F2212/2542
摘要： A system and method for cache management in a data processing system having a memory hierarchy of upper memory and lower memory cache. A lower memory cache controller accesses a coherency state table to determine replacement policies of coherency states for cache lines present in the lower memory cache when receiving a cast-in request from one of the upper memory caches. The coherency state table implements a replacement policy that retains the more valuable cache coherency state information between the upper and lower memory caches for a particular cache line contained in both levels of memory at the time of cast-out from the upper memory cache.

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