Small and power-efficient cache that can provide data for background DMA devices while the processor is in a low-power state
    1.
    发明申请
    Small and power-efficient cache that can provide data for background DMA devices while the processor is in a low-power state 有权
    小而高功效的缓存,可在处理器处于低功耗状态时为背景DMA设备提供数据

    公开(公告)号:US20070130382A1

    公开(公告)日:2007-06-07

    申请号:US11351058

    申请日:2006-02-09

    IPC分类号: G06F13/28

    摘要: A small and power-efficient buffer/mini-cache sources and sinks selected DMA accesses directed to a memory space included in a coherency domain of a microprocessor when cached data in the microprocessor is inaccessible due to any or all of the microprocessor being in a low-power state not supporting snooping. Satisfying the selected DMA accesses via the buffer/mini-cache enables reduced power consumption by allowing the microprocessor (or portion thereof) to remain in the low-power state. The buffer/mini-cache may be operated (temporarily) incoherently with respect to the cached data in the microprocessor and flushed before deactivation to synchronize with the cached data when the microprocessor (or portion thereof) transitions to a high-power state that enables snooping. Alternatively the buffer/mini-cache may be operated in a manner (incrementally) coherent with the cached data. The microprocessor implements one or more processors having associated cache systems (such as various arrangements of first-, second-, and higher-level caches).

    摘要翻译: 当微处理器中的高速缓存数据由于微处理器中的任何一个或全部处于低电平状态而无法访问时,小型和功率高效的缓冲器/微型缓存器将选择的DMA访问定向到微处理器的相干域中的存储器空间 电源状态不支持窥探。 通过缓冲器/微型缓存来满足所选择的DMA访问通过允许微处理器(或其一部分)保持在低功率状态来降低功耗。 缓冲器/微型高速缓存可以相对于微处理器中的高速缓存数据非相干地操作(暂时地),并且在微处理器(或其部分)转换到启用窥探的高功率状态之前,在去激活之前刷新以与缓存的数据同步 。 或者,缓冲器/微型缓存可以以与缓存的数据相一致的方式(递增地)操作。 微处理器实现具有相关联的高速缓存系统(例如第一,第二和更高级别高速缓存的各种布置)的一个或多个处理器。

    POWER CONSERVATION VIA DRAM ACCESS REDUCTION
    2.
    发明申请
    POWER CONSERVATION VIA DRAM ACCESS REDUCTION 有权
    通过减少DRAM的功率节省

    公开(公告)号:US20070214323A1

    公开(公告)日:2007-09-13

    申请号:US11559133

    申请日:2006-11-13

    IPC分类号: G06F13/28

    摘要: Power conservation via DRAM access reduction is provided by a buffer/mini-cache selectively operable in a normal mode and a buffer mode. In the buffer mode, entered when CPUs begin operating in low-power states, non-cacheable accesses (such as generated by a DMA device) matching specified physical address ranges are processed by the buffer/mini-cache, instead of by a memory controller and DRAM. The buffer/mini-cache processing includes allocating lines when references miss, and returning cached data from the buffer/mini-cache when references hit. Lines are replaced in the buffer/mini-cache according to one of a plurality of replacement policies, including ceasing replacement when there are no available free lines. In the normal mode, entered when CPUs begin operating in high-power states, the buffer/mini-cache operates akin to a conventional cache and non-cacheable accesses are not processed therein. In one usage scenario, data retained in the buffer/mini-cache is graphics refresh data maintained in a compressed format metal layer on the second electrically

    摘要翻译: 通过DRAM访问减少的功率节省由在正常模式和缓冲模式下选择性地操作的缓冲器/微型缓存器提供。 在缓冲模式下,当CPU开始在低功耗状态下运行时,与缓存/微型缓存进行匹配的非缓存访问(例如由DMA设备产生的)与指定的物理地址范围匹配,而不是由存储器控制器 和DRAM。 缓冲/微型缓存处理包括在引用未命中时分配线路,以及当引用命中时从缓冲器/微型缓存器返回缓存数据。 根据多个替换策略中的一个替换策略,在缓冲器/微型缓存中替换行,包括当没有可用的空行时停止替换。 在正常模式下,当CPU开始在高功率状态下运行时,缓冲器/微型缓存类似于常规高速缓存,并且不能处理非缓存访问。 在一个使用场景中,保留在缓冲/微型缓存中的数据是第二次电压维持在压缩格式金属层中的图形刷新数据

    Power conservation via DRAM access reduction
    3.
    发明申请
    Power conservation via DRAM access reduction 有权
    通过DRAM访问减少节电

    公开(公告)号:US20070113015A1

    公开(公告)日:2007-05-17

    申请号:US11351070

    申请日:2006-02-09

    IPC分类号: G06F12/00

    摘要: Power conservation via DRAM access reduction is provided by a buffer/mini-cache selectively operable in a normal mode and a buffer mode. In the buffer mode, entered when CPUs begin operating in low-power states, non-cacheable accesses (such as generated by a DMA device) matching specified physical address ranges are processed by the buffer/mini-cache, instead of by a memory controller and DRAM. The buffer/mini-cache processing includes allocating lines when references miss, and returning cached data from the buffer/mini-cache when references hit. Lines are replaced in the buffer/mini-cache according to one of a plurality of replacement policies, including ceasing replacement when there are no available free lines. In the normal mode, entered when CPUs begin operating in high-power states, the buffer/mini-cache operates akin to a conventional cache and non-cacheable accesses are not processed therein. In one usage scenario, data retained in the buffer/mini-cache is graphics refresh data maintained in a compressed format.

    摘要翻译: 通过DRAM访问减少的功率节省由在正常模式和缓冲模式下选择性地操作的缓冲器/微型缓存器提供。 在缓冲模式下,当CPU开始在低功耗状态下运行时,与缓存/微型缓存进行匹配的非缓存访问(例如由DMA设备产生的)与指定的物理地址范围匹配,而不是由存储器控制器 和DRAM。 缓冲/微型缓存处理包括在引用未命中时分配线路,以及当引用命中时从缓冲器/微型缓存器返回缓存数据。 根据多个替换策略中的一个替换策略,在缓冲器/微型缓存中替换行,包括当没有可用的空行时停止替换。 在正常模式下,当CPU开始在高功率状态下运行时,缓冲器/微型缓存类似于常规高速缓存,并且不能处理非缓存访问。 在一种使用场景中,保留在缓冲/微型缓存中的数据是以压缩格式维护的图形刷新数据。

    Virtual core management
    4.
    发明授权
    Virtual core management 有权
    虚拟核心管理

    公开(公告)号:US07802073B1

    公开(公告)日:2010-09-21

    申请号:US11781726

    申请日:2007-07-23

    IPC分类号: G06F9/50

    CPC分类号: G06F9/3851

    摘要: The present disclosure provides methods and systems adapted for use with a processor having one or more physical cores. The methods and systems include a virtual core management component adapted to map one or more virtual cores to at least one of the physical cores to enable execution of one or more programs by the at least one physical core. The one or more virtual cores include one or more logical states associated with the execution of the one or more programs. The methods and systems may include a memory component adapted to store the one or more virtual cores. The virtual core management component may be adapted to transfer the one or more virtual cores from the memory component to the at least one physical core.

    摘要翻译: 本公开提供适于与具有一个或多个物理核心的处理器一起使用的方法和系统。 所述方法和系统包括适于将一个或多个虚拟核心映射到所述物理核心中的至少一个的虚拟核心管理组件,以使所述至少一个物理核心能够执行一个或多个程序。 一个或多个虚拟核心包括与一个或多个程序的执行相关联的一个或多个逻辑状态。 方法和系统可以包括适于存储一个或多个虚拟核的存储器组件。 虚拟核心管理组件可以适于将一个或多个虚拟核心从存储器组件传送到至少一个物理核心。