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    • 2. 发明申请
    • INPUT/OUTPUT TRANSACTION MANAGEMENT DURING PLATFORM INITIATION
    • 平台启动期间的输入/输出交易管理
    • US20100017796A1
    • 2010-01-21
    • US12173884
    • 2008-07-16
    • James L. WalkerJohn J. HawkAlok PantJohn Hentosh
    • James L. WalkerJohn J. HawkAlok PantJohn Hentosh
    • G06F9/445G06F13/38
    • G06F9/4411
    • In a Uniform Extensible Firmware Interface (UEFI) environment, a system management mode (SMM) driver and a non-SMM driver may be installed for the same hardware device. Until the SMM driver is available, the non-SMM driver is configured to conduct input/output (IO) transactions directly with the hardware device. The non-SMM driver can utilize native UEFI services to receive a notification that the SMM driver is available. Upon receiving such notification, (or if the SMM driver was already available before the non-SMM driver), the non-SMM driver is reconfigured to redirect all IO requests to the SMM driver, which then conducts the corresponding IO transactions directly with the hardware device. Redirecting all non-SMM IO requests for a hardware device to the SMM driver for the hardware device limits direct access to the hardware device to only one driver, the SMM driver, thereby facilitating the integrity or atomicity of IO transactions.
    • 在统一的可扩展固件接口(UEFI)环境中,可以为相同的硬件设备安装系统管理模式(SMM)驱动程序和非SMM驱动程序。 在SMM驱动程序可用之前,非SMM驱动程序被配置为直接与硬件设备进行输入/输出(IO)事务。 非SMM驱动程序可以利用本机UEFI服务来接收SMM驱动程序可用的通知。 (或者如果SMM驱动程序在非SMM驱动程序之前已经可用),则非SMM驱动程序被重新配置为将所有IO请求重定向到SMM驱动程序,然后SMM驱动程序直接用硬件进行相应的IO事务 设备。 将硬件设备的所有非SMM IO请求重定向到硬件设备的SMM驱动程序都限制将硬件设备直接访问到仅一个驱动程序SMM驱动程序,从而便于IO事务的完整性或原子性。
    • 4. 发明授权
    • Power management override for portable computers
    • 电源管理覆盖便携式电脑
    • US06282662B1
    • 2001-08-28
    • US09562360
    • 1995-08-04
    • Charles ZellerJames L. Walker
    • Charles ZellerJames L. Walker
    • G06F126
    • G06F1/3203
    • Method and apparatus for selectively overriding a prepackaged power management driver of a portable personal computer so that data transmitted to the CPIU of the computer by a device, such as a “real time” serial communicators device connected thereto, is not lost during the CPUs latency “wake up” period following a CPU power-down operation. An override system stored in memory comprises an override flag which may be set or cleared by a user or the computer. If the override flag is set, then the power management system is prevented from reducing power to the CPU so that the occurrence of a CPU latency period and thus potential for loss of data is avoided.
    • 用于选择性地覆盖便携式个人计算机的预先包装的电力管理驱动器的方法和装置,使得通过诸如连接到其的“实时”串行通信器装置的设备传送到计算机的CPIU的数据在CPU等待时间期间不会丢失 在CPU掉电操作后的“唤醒”期间。 存储在存储器中的覆盖系统包括可由用户或计算机设置或清除的覆盖标志。 如果设置了覆盖标志,则防止电源管理系统降低CPU的功率,从而避免发生CPU等待时间,从而避免数据丢失的可能。