公开(公告)号：US07971034B2

公开(公告)日：2011-06-28

申请号：US12051415

申请日：2008-03-19

申请人： David S. Hutton ,  Michael Billeci ,  Fadi Y. Busaba ,  Brian R. Prasky ,  John G. Rell, Jr. ,  Chung-Lung Kevin Shum ,  Charles F. Webb

发明人： David S. Hutton ,  Michael Billeci ,  Fadi Y. Busaba ,  Brian R. Prasky ,  John G. Rell, Jr. ,  Chung-Lung Kevin Shum ,  Charles F. Webb

IPC分类号： G06F9/00 ,  G06F9/44 ,  G06F9/30

CPC分类号： G06F9/30189 ,  G06F9/30076 ,  G06F9/342 ,  G06F9/3802 ,  G06F9/3824 ,  G06F9/3836 ,  G06F9/3861 ,  G06F9/3867

摘要： A method, system, and computer program product for reduced overhead address mode change management in a pipelined, recycling microprocessor are provided. The recycling microprocessor includes logic executing thereon. The microprocessor also includes an instruction fetch unit (IFU) supporting computation of address adds in selected address modes and reporting non-equal comparison of the computation to the logic. The microprocessor further includes a fixed point unit determining whether the mode has changed and reporting changes to the logic. Upon determining the comparison yields an equal result but the mode has changed, a recycle event is triggered to ensure subsequent ofetches are relaunched in the correct mode and that no execution writebacks occur from work performed in an incorrect mode. For comparisons yielding a non-equal result and a changed mode, the logic clears bits set in response to the determinations, and a serialization event is taken to reset a corresponding pipeline for operation in the correct mode.

摘要翻译： 提供了一种用于在流水线式回收微处理器中减少开销地址模式改变管理的方法，系统和计算机程序产品。 回收微处理器包括在其上执行的逻辑。 微处理器还包括一个指令提取单元（IFU），用于支持在所选择的地址模式中添加的地址的计算，并且将该计算的不相等的比较报告给逻辑。 微处理器还包括确定模式是否改变并且对逻辑进行报告改变的固定点单元。 在确定比较时，产生相等的结果，但是模式已经改变，触发一个循环事件，以确保以正确的模式重新启动后续的提取，并且在不正确的模式下执行的工作不会执行执行回写。 为了比较产生不相等的结果和改变的模式，逻辑清除响应于确定的位设置，并且采用串行化事件来复位相应的流水线以便以正确的模式进行操作。

公开(公告)号：US07953932B2

公开(公告)日：2011-05-31

申请号：US12030627

申请日：2008-02-13

申请人： Chung-Lung Kevin Shum ,  Brian D. Barrick ,  Aaron Tsai ,  Charles F. Webb

发明人： Chung-Lung Kevin Shum ,  Brian D. Barrick ,  Aaron Tsai ,  Charles F. Webb

IPC分类号： G06F12/00

CPC分类号： G06F12/0828 ,  G06F9/3824 ,  G06F9/3834 ,  G06F9/3867

摘要： A system and method for avoiding deadlocks when performing storage updates in a multi-processor environment. The system includes a processor having a local cache, a store queue having a temporary buffer with capability to reject exclusive cross-interrogates (XI) while an interrogated cache line is owned exclusive and is to be stored, and a mechanism for performing a method. The method includes setting the processor into a slow mode. A current instruction that includes a data store having one or more target lines is received. The current instruction is executed, with the executing including storing results associated with the data store into the temporary buffer. The store queue is prevented from rejecting an exclusive XI corresponding to the target lines of the current instruction. Each target line is acquired with a status of exclusive ownership, and the contents from the temporary buffer are written to each target line after instruction completion.

摘要翻译： 一种用于在多处理器环境中执行存储更新时避免死锁的系统和方法。 该系统包括具有本地高速缓存的处理器，具有临时缓冲器的存储队列，该临时缓冲器具有拒绝排他交叉询问（XI）的能力，同时询问的高速缓存行被独占地存储并被存储，以及用于执行方法的机制。 该方法包括将处理器设置为慢速模式。 接收包括具有一个或多个目标线的数据存储器的当前指令。 执行当前指令，执行包括将与数据存储相关联的结果存储到临时缓冲器中。 防止存储队列拒绝与当前指令的目标行相对应的排他的XI。 每个目标行被采集为具有独占所有权的状态，并且在指令完成之后将来自临时缓冲器的内容写入每个目标行。

公开(公告)号：US07882338B2

公开(公告)日：2011-02-01

申请号：US12034066

申请日：2008-02-20

申请人： Khary J. Alexander ,  James J. Bonanno ,  Brian R. Prasky ,  Anthony Saporito, III ,  Robert J. Sonnelitter, III ,  Charles F. Webb

发明人： Khary J. Alexander ,  James J. Bonanno ,  Brian R. Prasky ,  Anthony Saporito, III ,  Robert J. Sonnelitter, III ,  Charles F. Webb

IPC分类号： G06F9/32

CPC分类号： G06F9/30054 ,  G06F9/3804 ,  G06F9/3806 ,  G06F9/3844

摘要： A method, system and computer program product for performing an implicit predicted return from a predicted subroutine are provided. The system includes a branch history table/branch target buffer (BHT/BTB) to hold branch information, including a target address of a predicted subroutine and a branch type. The system also includes instruction buffers, and instruction fetch controls to perform a method including fetching a branch instruction at a branch address and a return-point instruction. The method also includes receiving the target address and the branch type, and fetching a fixed number of instructions in response to the branch type. The method further includes referencing the return-point instruction within the instruction buffers such that the return-point instruction is available upon completing the fetching of the fixed number of instructions absent a re-fetch of the return-point instruction.

摘要翻译： 提供了一种用于从预测子程序执行隐含预测返回的方法，系统和计算机程序产品。 该系统包括用于保持分支信息的分支历史表/分支目标缓冲器（BHT / BTB），包括预测子程序的目标地址和分支类型。 该系统还包括指令缓冲器和指令获取控制，以执行包括在分支地址和返回点指令处获取分支指令的方法。 该方法还包括接收目标地址和分支类型，以及响应于分支类型取出固定数目的指令。 该方法还包括引用指令缓冲器内的返回点指令，使得在没有重新获取返回点指令的情况下完成取出固定数目的指令后，返回点指令是可用的。

公开(公告)号：US20090240929A1

公开(公告)日：2009-09-24

申请号：US12051415

申请日：2008-03-19

申请人： David S. Hutton ,  Michael Billeci ,  Fadi Y. Busaba ,  Brian R. Prasky ,  John G. Rell, JR. ,  Chung-Lung Kevin Shum ,  Charles F. Webb

发明人： David S. Hutton ,  Michael Billeci ,  Fadi Y. Busaba ,  Brian R. Prasky ,  John G. Rell, JR. ,  Chung-Lung Kevin Shum ,  Charles F. Webb

IPC分类号： G06F9/312

CPC分类号： G06F9/30189 ,  G06F9/30076 ,  G06F9/342 ,  G06F9/3802 ,  G06F9/3824 ,  G06F9/3836 ,  G06F9/3861 ,  G06F9/3867

摘要： A method, system, and computer program product for reduced overhead address mode change management in a pipelined, recycling microprocessor are provided. The recycling microprocessor includes logic executing thereon. The microprocessor also includes an instruction fetch unit (IFU) supporting computation of address adds in selected address modes and reporting non-equal comparison of the computation to the logic. The microprocessor further includes a fixed point unit determining whether the mode has changed and reporting changes to the logic. Upon determining the comparison yields an equal result but the mode has changed, a recycle event is triggered to ensure subsequent ofetches are relaunched in the correct mode and that no execution writebacks occur from work performed in an incorrect mode. For comparisons yielding a non-equal result and a changed mode, the logic clears bits set in response to the determinations, and a serialization event is taken to reset a corresponding pipeline for operation in the correct mode.

摘要翻译： 提供了一种用于在流水线式回收微处理器中减少开销地址模式改变管理的方法，系统和计算机程序产品。 回收微处理器包括在其上执行的逻辑。 微处理器还包括一个指令提取单元（IFU），用于支持在所选择的地址模式中添加的地址的计算，并且将该计算的不相等的比较报告给逻辑。 微处理器还包括确定模式是否改变并且对逻辑进行报告改变的固定点单元。 在确定比较时，产生相等的结果，但是模式已经改变，触发一个循环事件，以确保以正确的模式重新启动后续的提取，并且在不正确的模式下执行的工作不会执行执行回写。 为了比较产生不相等的结果和改变的模式，逻辑清除响应于确定的位设置，并且采用串行化事件来复位相应的流水线以便以正确的模式进行操作。

公开(公告)号：US20090217009A1

公开(公告)日：2009-08-27

申请号：US12036520

申请日：2008-02-25

申请人： Chung-Lung Kevin Shum ,  Fadi Y. Busaba ,  Mark S. Farrell ,  Bruce C. Giamei ,  Bernd Nerz ,  David A. Schroter ,  Charles F. Webb

发明人： Chung-Lung Kevin Shum ,  Fadi Y. Busaba ,  Mark S. Farrell ,  Bruce C. Giamei ,  Bernd Nerz ,  David A. Schroter ,  Charles F. Webb

IPC分类号： G06F9/318

CPC分类号： G06F9/3017 ,  G06F9/30018 ,  G06F9/30101 ,  G06F9/355

摘要： A system, method and computer program product for translations in a computer system. The system includes a general purpose register containing a base address of an address translation table. The system also includes a millicode accessible special displacement register configured to receive a plurality of elements to be translated. The system further includes a multiplexer for selecting a particular one of the plurality of elements from the millicode accessible special displacement register and for generating a displacement or offset value. The system further includes an address generator for creating a combined address containing the base address from the general purpose register and the generated displacement or offset value.

摘要翻译： 一种用于计算机系统中的翻译的系统，方法和计算机程序产品。 该系统包括包含地址转换表的基地址的通用寄存器。 该系统还包括被配置为接收多个要被翻译的元件的毫代可访问特殊位移寄存器。 该系统还包括多路复用器，用于从毫代可访问特殊位移寄存器中选择多个元件中的特定元件，并用于产生位移或偏移值。 该系统还包括地址发生器，用于创建包含来自通用寄存器的基地址和所生成的位移或偏移值的组合地址。

公开(公告)号：US20090216951A1

公开(公告)日：2009-08-27

申请号：US12035668

申请日：2008-02-22

申请人： Chung-Lung Kevin Shum ,  Charles F. Webb

发明人： Chung-Lung Kevin Shum ,  Charles F. Webb

IPC分类号： G06F12/08 ,  G06F9/30 ,  G06F9/46

CPC分类号： G06F9/3851 ,  G06F12/0815

摘要： A system, method, and computer program product for handling shared cache lines to allow forward progress among processors in a multi-processor environment is provided. A counter and a threshold are provided a processor of the multi-processor environment, such that the counter is incremented for every exclusive cross interrogate (XI) reject that is followed by an instruction completion, and reset on an exclusive XI acknowledgement. If the XI reject counter reaches a preset threshold value, the processor's pipeline is drained by blocking instruction issue and prefetching attempts, creating a window for an exclusive XI from another processor to be honored, after which normal instruction processing is resumed. Configuring the preset threshold value as a programmable value allows for fine-tuning of system performance.

摘要翻译： 提供了一种用于处理共享高速缓存行以允许处理器在多处理器环境中的前进进行的系统，方法和计算机程序产品。 为多处理器环境的处理器提供计数器和阈值，使得计数器对于跟随指令完成的每个排他交叉询问（XI）拒绝而增加，并且在独占XI确认上复位。 如果XI拒绝计数器达到预设阈值，则通过阻止指令发出和预取尝试来消除处理器的流水线，从另一个处理器创建一个独占XI的窗口，从而恢复正常指令处理。 将预设阈值配置为可编程值允许微调系统性能。

公开(公告)号：US20090198980A1

公开(公告)日：2009-08-06

申请号：US12023155

申请日：2008-01-31

申请人： Khary J. Alexander ,  Fadi Y. Busaba ,  Mark S. Farrell ,  Bruce C. Giamei ,  Timothy J. Slegel ,  Charles F. Webb

发明人： Khary J. Alexander ,  Fadi Y. Busaba ,  Mark S. Farrell ,  Bruce C. Giamei ,  Timothy J. Slegel ,  Charles F. Webb

IPC分类号： G06F9/30

CPC分类号： G06F9/30079 ,  G06F9/30145 ,  G06F9/3867

摘要： An extended DRAIN instruction is used to stall processing within a computing environment. The instruction includes an indication of the one or more processing stages at which processing is to be stalled. It also includes a control that allows processing to be stalled for additional cycles, as desired.

摘要翻译： 扩展DRAIN指令用于在计算环境中停止处理。 该指令包括处理被停止的一个或多个处理阶段的指示。 它还包括一个控制，允许根据需要使处理停滞在额外的周期。

公开(公告)号：US20090182964A1

公开(公告)日：2009-07-16

申请号：US11972706

申请日：2008-01-11

申请人： DAN F. GREINER ,  Lisa C. Heller ,  Damian L. Osisek ,  Erwin Pfeffer ,  Timothy J. Slegel ,  Charles F. Webb

发明人： DAN F. GREINER ,  Lisa C. Heller ,  Damian L. Osisek ,  Erwin Pfeffer ,  Timothy J. Slegel ,  Charles F. Webb

IPC分类号： G06F12/10 ,  G06F12/14

CPC分类号： G06F12/1009 ,  G06F2212/1044 ,  G06F2212/652

摘要： What is provided is an enhanced dynamic address translation facility. In one embodiment, a virtual address to be translated and an initial origin address of a translation table of the hierarchy of translation tables are obtained. An index portion of the virtual address is used to reference an entry in the translation table. If the format control field is enabled, a frame address of a large block of data in main storage is obtained from the translation table entry. The large block of data is a block of at least 1M byte in size. The frame address is then combined with an offset portion of the virtual address to form the translated address of a desired block of data within the large block of data in main storage. The desired large block of data addressed by the translated address is then accessed.

摘要翻译： 提供的是增强的动态地址转换设施。 在一个实施例中，获得要转换的虚拟地址和翻译表的层次结构的转换表的初始起始地址。 虚拟地址的索引部分用于引用转换表中的条目。 如果启用格式控制字段，则从转换表条目获得主存储器中的大数据块的帧地址。 大块数据是至少1M字节的块。 然后将帧地址与虚拟地址的偏移部分组合，以在主存储器中的大量数据块内形成期望的数据块的转换地址。 然后访问由翻译的地址寻址的期望的大量数据。

公开(公告)号：US20080168202A1

公开(公告)日：2008-07-10

申请号：US11620141

申请日：2007-01-05

申请人： Douglas G. Balazich ,  Michael D. Campbell ,  Janet R. Easton ,  Mark S. Farrell ,  Thomas A. Gregg ,  Kulwant M. Pandey ,  Gary E. Strait ,  Charles F. Webb

发明人： Douglas G. Balazich ,  Michael D. Campbell ,  Janet R. Easton ,  Mark S. Farrell ,  Thomas A. Gregg ,  Kulwant M. Pandey ,  Gary E. Strait ,  Charles F. Webb

IPC分类号： G06F13/24

CPC分类号： G06F13/24

摘要： The setting of interruption initiatives is directly initiated by external adapters. An adapter external to the processors at which the initiative is to be made pending sends a request directly to a system controller coupled to the adapter and the processors. The system controller then broadcasts a command to the processors instructing the processors to set the interruption initiative.

摘要翻译： 中断计划的设置由外部适配器直接启动。 处理器外部的适配器在外部的适配器将直接发送到耦合到适配器和处理器的系统控制器的请求。 然后，系统控制器向指示处理器的处理器广播命令以设置中断主动性。

公开(公告)号：US20080065834A1

公开(公告)日：2008-03-13

申请号：US11531288

申请日：2006-09-13

申请人： Mark A. Check ,  Jennifer A. Navarro ,  Charles F. Webb

发明人： Mark A. Check ,  Jennifer A. Navarro ,  Charles F. Webb

IPC分类号： G06F12/00

CPC分类号： G06F12/127 ,  G06F9/3832 ,  G06F12/123 ,  G06F2212/6028

摘要： A computer system with the means to identify based on the instruction being decoded that the operand data that this instruction will access by its nature will not have locality of access and should be installed in the cache in such a way that each successive line brought into the data cache that hits the same congruence class should be placed in the same set as to not disturb the locality of the data that resided in the cache prior to the execution of the instruction that accessed the data that will not have locality of access.

摘要翻译： 一种具有根据正在被解码的指令识别的手段的计算机系统，该指令本身将访问的操作数数据将不具有访问的位置，并且应该以这样的方式安装在每个连续的行中， 在同一个集合中的数据高速缓存应放置在相同的集合中，以便在执行访问不具有访问地址的数据的指令之前，不要干扰驻留在缓存中的数据的位置。