公开(公告)号：US5754804A

公开(公告)日：1998-05-19

申请号：US594056

申请日：1996-01-30

申请人： Harry Cheselka ,  Steven Wade Hunter ,  Charles Steven Lingafelt ,  James Gregory Mulkey ,  John Wagner Yarbrough

发明人： Harry Cheselka ,  Steven Wade Hunter ,  Charles Steven Lingafelt ,  James Gregory Mulkey ,  John Wagner Yarbrough

IPC分类号： G06F13/40 ,  G06F13/00

CPC分类号： G06F13/4022

摘要： In a data processing system, a first system processor is coupled to a first system bus. The first system processor includes a first bus controller. A second system processor having a second bus controller is coupled to a second system bus. The first bus controller is then coupled to a management bus, and the second bus controller is coupled to the same management bus. Thereafter, at least one feature device is coupled to the first system bus, the second system bus, and the management bus. The feature device is also configured to communicate system processor communications with the first system processor via the first system bus. Next, a problem that affects system processor communications over the first system bus between the feature device and the first system processor is detected. In response to detecting such a communications problem, a command is sent to the feature device via the management bus. In response to receiving the command on the management bus, the feature device is configured to communicate system processor communications with the second system processor via the second system bus, wherein the feature device continues to operate in the data processing system as a result of communicating system processor communications with the second system processor via the second system bus in the presence of a problem that affects system processor communications over the first system bus. A second management bus may be coupled to the first bus controller, the second bus controller, and the feature device for providing a redundant management bus.

摘要翻译： 在数据处理系统中，第一系统处理器耦合到第一系统总线。 第一系统处理器包括第一总线控制器。 具有第二总线控制器的第二系统处理器耦合到第二系统总线。 然后将第一总线控制器耦合到管理总线，并且第二总线控制器耦合到相同的管理总线。 此后，至少一个特征设备耦合到第一系统总线，第二系统总线和管理总线。 特征设备还被配置为经由第一系统总线与第一系统处理器通信系统处理器通信。 接下来，检测到影响在特征设备和第一系统处理器之间的第一系统总线上的系统处理器通信的问题。 响应于检测到这样的通信问题，经由管理总线将命令发送到特征设备。 响应于在管理总线上接收到命令，特征设备被配置为经由第二系统总线与第二系统处理器通信系统处理器通信，其中特征设备作为通信系统的结果继续在数据处理系统中操作 在存在影响通过第一系统总线的系统处理器通信的问题的情况下，通过第二系统总线与第二系统处理器进行处理器通信。 第二管理总线可以耦合到第一总线控制器，第二总线控制器和用于提供冗余管理总线的特征设备。