公开(公告)号：US20100027735A1

公开(公告)日：2010-02-04

申请号：US12183748

申请日：2008-07-31

申请人： Carl Alfred Bender ,  Peter Heiner Hochschild ,  Ashutosh Misra ,  Richard Swetz

发明人： Carl Alfred Bender ,  Peter Heiner Hochschild ,  Ashutosh Misra ,  Richard Swetz

IPC分类号： H03K21/00

CPC分类号： H03K21/00 ,  G06F11/348 ,  G06F2201/86 ,  G06F2201/88 ,  H03K23/42

摘要： There is broadly contemplated herein an arrangement whereby each event source feeds a small dedicated “pre-counter” while an actual count is kept in a 64-bit wide RAM. Such an implementation preferably may involve a state machine that simply sweeps through the pre-counters, in a predetermined fixed order. Preferably, the state machine will access each pre-counter, add the value from the pre-counter to a corresponding RAM location, and then clear the pre-counter. Accordingly, the pre-counters merely have to be wide enough such that even at a maximal event rate, the pre-counter will not be able to wrap (i.e., reach capacity or overflow) before the “sweeper” state machine accesses the pre-counter.

摘要翻译： 这里广泛考虑了一种布置，其中每个事件源馈送小的专用“预计数器”，而实际计数保持在64位宽的RAM中。 这种实施方式优选地可以包括以预定的固定顺序简单地扫过预先计数器的状态机。 优选地，状态机将访问每个预计数器，将来自预计数器的值添加到相应的RAM位置，然后清除预计数器。 因此，预计数器仅需要足够宽，使得即使在最大事件速率下，在“扫描器”状态机访问预先计数器之前，预计数器将不能包裹（即，达到容量或溢出） 计数器。

公开(公告)号：US08660234B2

公开(公告)日：2014-02-25

申请号：US12183748

申请日：2008-07-31

申请人： Carl Alfred Bender ,  Peter Heiner Hochschild ,  Ashutosh Misra ,  Richard Swetz

发明人： Carl Alfred Bender ,  Peter Heiner Hochschild ,  Ashutosh Misra ,  Richard Swetz

IPC分类号： H03K21/00

CPC分类号： H03K21/00 ,  G06F11/348 ,  G06F2201/86 ,  G06F2201/88 ,  H03K23/42

摘要： There is broadly contemplated herein an arrangement whereby each event source feeds a small dedicated “pre-counter” while an actual count is kept in a 64-bit wide RAM. Such an implementation preferably may involve a state machine that simply sweeps through the pre-counters, in a predetermined fixed order. Preferably, the state machine will access each pre-counter, add the value from the pre-counter to a corresponding RAM location, and then clear the pre-counter. Accordingly, the pre-counters merely have to be wide enough such that even at a maximal event rate, the pre-counter will not be able to wrap (i.e., reach capacity or overflow) before the “sweeper” state machine accesses the pre-counter.

摘要翻译： 这里广泛考虑了一种布置，其中每个事件源馈送小的专用“预计数器”，而实际计数保持在64位宽的RAM中。 这种实施方式优选地可以包括以预定的固定顺序简单地扫过预先计数器的状态机。 优选地，状态机将访问每个预计数器，将来自预计数器的值添加到相应的RAM位置，然后清除预计数器。 因此，预计数器仅需要足够宽，使得即使在最大事件速率下，在“扫描器”状态机访问预先计数器之前，预计数器将不能包裹（即，达到容量或溢出） 计数器。

公开(公告)号：US08621120B2

公开(公告)日：2013-12-31

申请号：US11279906

申请日：2006-04-17

申请人： Carl Alfred Bender ,  Patrick Allen Buckland ,  Steven Mark Thurber ,  Adalberto Guillermo Yanes

发明人： Carl Alfred Bender ,  Patrick Allen Buckland ,  Steven Mark Thurber ,  Adalberto Guillermo Yanes

IPC分类号： G06F13/14

CPC分类号： G06F13/28 ,  G06F12/1081

摘要： A mechanism for temporarily stalling selected Direct Memory Access (DMA) operations in a physical input/output (I/O) adapter in order to permit migration of data between physical pages that are subject to access by the physical I/O adapter. When a request for a DMA to a physical page in system memory is received from an I/O adapter, a migration in progress (MIP) bit in a translation control entry (TCE) pointing to the physical page is examined, wherein the MIP bit indicates whether migration of the physical page referenced in the TCE to another location in system memory is currently in progress. If the MIP bit indicates a migration of the physical page is in progress, the DMA from the I/O adapter is temporarily stalled while other DMA operations from other I/O adapters to other physical pages in system memory are allowed to continue.

摘要翻译： 用于暂时停止物理输入/输出（I / O）适配器中选定的直接内存访问（DMA）操作的机制，以便允许在物理I / O适配器访问的物理页之间迁移数据。 当从I / O适配器接收到对系统存储器中的物理页面的DMA的请求时，检查指向物理页面的翻译控制条目（TCE）中正在进行的迁移（MIP）位，其中MIP位 指示TCE中引用的物理页面迁移到系统内存中的另一个位置是否正在进行中。 如果MIP位指示物理页面的迁移正在进行中，则允许来自I / O适配器的DMA暂时停止，而允许从其他I / O适配器到系统内存中其他物理页面的其他DMA操作继续。

公开(公告)号：US07734843B2

公开(公告)日：2010-06-08

申请号：US11420236

申请日：2006-05-25

申请人： Carl Alfred Bender ,  Patrick Allen Buckland ,  Steven Mark Thurber ,  Adalberto Guillermo Yanes

发明人： Carl Alfred Bender ,  Patrick Allen Buckland ,  Steven Mark Thurber ,  Adalberto Guillermo Yanes

IPC分类号： G06F13/28 ,  G06F15/167 ,  G06F12/00 ,  G06F9/26

CPC分类号： G06F13/28

摘要： A computer-implemented method, apparatus, and computer program product are disclosed for migrating data from a source physical page to a destination physical page. A migration process is begun to migrate data from the source physical page to the destination physical page which causes a host bridge to enter a first state. The host bridge then suspends processing of direct memory access operations when the host bridge is in the first state. The data is migrated from the source physical page to the destination physical page while the host bridge is in the first state.

摘要翻译： 公开了一种用于将数据从源物理页迁移到目的物理页的计算机实现的方法，装置和计算机程序产品。 迁移过程开始将数据从源物理页面迁移到目标物理页面，导致主机桥接器进入第一个状态。 然后，当主桥处于第一状态时，主机桥暂停对直接存储器访问操作的处理。 当主桥处于第一状态时，数据将从源物理页迁移到目标物理页。

公开(公告)号：US5825748A

公开(公告)日：1998-10-20

申请号：US833636

申请日：1997-04-08

申请人： Kathy Sue Barkey ,  Carl Alfred Bender ,  Derrick LeRoy Garmire ,  Harold Edgar Roman ,  Daniel Gerard Smyth

发明人： Kathy Sue Barkey ,  Carl Alfred Bender ,  Derrick LeRoy Garmire ,  Harold Edgar Roman ,  Daniel Gerard Smyth

IPC分类号： H04L12/56

CPC分类号： H04L49/55 ,  H04L12/5602 ,  H04L49/3081 ,  H04L49/505 ,  H04L2012/5627 ,  H04L2012/5632 ,  H04L49/30 ,  H04L49/555

摘要： A credit-based flow control checking scheme is presented for controlling data communications in a closed loop system comprising a sender, a receiver and a link coupling the sender and receiver. The credit-based scheme includes automatically periodically transmitting a credit query from the receiver to the sender and upon return receipt of a credit acknowledge containing the available credit count maintained by the sender, determining whether credit gain or credit loss has occurred subsequent to initialization of the closed loop system. Along with automatically determining whether credit gain or credit loss has occurred, a method/system is presented for automatically correcting the loss or gain without requiring resetting of the closed loop system.

摘要翻译： 提出了一种基于信用的流量控制检查方案，用于控制闭环系统中的数据通信，闭环系统包括发送器，接收器和耦合发送器和接收器的链路。 基于信用的方案包括自动地将信用查询从接收方周期性地发送给发送者，并且在收到包含发送者维护的可用信用计数的信用确认信息时，确定信用收益或信用损失是否在初始化之后发生 闭环系统。 随着自动确定信用收益或信用损失是否发生，提出了一种自动纠正损失或增益的方法/系统，而不需要重置闭环系统。

公开(公告)号：US20080005383A1

公开(公告)日：2008-01-03

申请号：US11420236

申请日：2006-05-25

申请人： Carl Alfred Bender ,  Patrick Allen Buckland ,  Steven Mark Thurber ,  Adalberto Guillermo Yanes

发明人： Carl Alfred Bender ,  Patrick Allen Buckland ,  Steven Mark Thurber ,  Adalberto Guillermo Yanes

IPC分类号： G06F13/28

CPC分类号： G06F13/28

摘要： A computer-implemented method, apparatus, and computer program product are disclosed for migrating data from a source physical page to a destination physical page. A migration process is begun to migrate data from the source physical page to the destination physical page which causes a host bridge to enter a first state. The host bridge then suspends processing of direct memory access operations when the host bridge is in the first state. The data is migrated from the source physical page to the destination physical page while the host bridge is in the first state.

摘要翻译： 公开了一种用于将数据从源物理页迁移到目的物理页的计算机实现的方法，装置和计算机程序产品。 迁移过程开始将数据从源物理页面迁移到目标物理页面，导致主机桥接器进入第一个状态。 然后，当主桥处于第一状态时，主机桥暂停对直接存储器访问操作的处理。 当主桥处于第一状态时，数据将从源物理页迁移到目标物理页。

公开(公告)号：US6044406A

公开(公告)日：2000-03-28

申请号：US835457

申请日：1997-04-08

申请人： Kathy Sue Barkey ,  Carl Alfred Bender ,  Derrick LeRoy Garmire ,  Harold Edgar Roman ,  Daniel Gerard Smyth

发明人： Kathy Sue Barkey ,  Carl Alfred Bender ,  Derrick LeRoy Garmire ,  Harold Edgar Roman ,  Daniel Gerard Smyth

IPC分类号： H04L12/56 ,  H04Q11/04 ,  G06F13/38 ,  G06F15/17

CPC分类号： H04Q11/0478 ,  H04L2012/5635 ,  H04L2012/5636

摘要： A credit-based flow control checking scheme is presented for controlling data communications in a closed loop system comprising a sender, a receiver and a link coupling the sender and receiver. The credit-based scheme includes automatically periodically transmitting a credit query from the receiver to the sender and upon return receipt of a credit acknowledge containing the available credit count maintained by the sender, determining whether credit gain or credit loss has occurred subsequent to initialization of the closed loop system. Along with automatically determining whether credit gain or credit loss has occurred, a method/system is presented for automatically correcting the loss or gain without requiring resetting of the closed loop system.

摘要翻译： 提出了一种基于信用的流量控制检查方案，用于控制闭环系统中的数据通信，该闭环系统包括发送器，接收器和耦合发送器和接收器的链路。 基于信用的方案包括自动地将信用查询从接收方周期性地发送给发送者，并且在收到包含发送者维护的可用信用计数的信用确认信息时，确定信用收益或信用损失是否在初始化之后发生 闭环系统。 随着自动确定信用收益或信用损失是否发生，提出了一种自动纠正损失或增益的方法/系统，而不需要重置闭环系统。