摘要:
One embodiment of the present invention is a PCI bus target device. The PCI bus target device includes a first circuit, a second circuit, a third circuit, and a fourth circuit. The first circuit is configured to determine whether the PCI bus target device is the target of a first transaction initiated by a first PCI bus master device. The second circuit is configured to determine whether the PCI bus target device is ready to complete the first transaction. The third circuit is configured to determine whether a second PCI bus master device is ready to initiate a second transaction. The fourth circuit is configured to terminate the first transaction if the PCI bus target device is the target of the first transaction and is not ready to complete the first transaction and the second PCI bus master device is ready to initiate the second transaction.
摘要:
The invention includes a platform having a controller coupled to a central processing unit through a system bus. The platform also includes a register device coupled between the central processing unit and the controller. Moreover, the platform also includes a bus coupled to the controller having an end that is adapted to receive a device. The register device includes a depth that is adapted to hold all instruction packets from the central processing unit without presenting delays due to full conditions.
摘要:
An apparatus includes at least two circuits having interfaces, for transmitting and receiving bus formatted messages and a port coupled to receive messages from the interfaces. The port broadcasts a first received message that is not destined for one of the circuits to the bus. The port blocks broadcast of a second received message that is destined for one of the circuits to the bus.
摘要:
Various systems and methods for managing graphics subsystems are described herein. A system for managing graphics subsystems of a compute device includes a display controller operable to: receive an indication that a first display of the compute device has been activated; enable a power management feature in a display controller, the power management feature to reduce power consumption of the display controller and associated components, and the power management feature to reduce graphics memory bandwidth usage; receive an indication that a second display has been activated with the first display; and maintain the power management feature for at least the first display.
摘要:
In an embodiment, the present invention includes a processor having a first domain with at least one core to execute instructions, a second domain coupled to the first domain and having at least one non-core circuit, and a power control unit (PCU) coupled to the first and second domains. The PCU may include a power sharing logic to receive encoded power consumption information from the second domain and to calculate an available power budget for the first domain based at least in part on the encoded power consumption information. Other embodiments are described and claimed.
摘要:
Techniques for determining a communication interface of a computer platform. In an embodiment, a power management unit of a computer platform provides to an agent of the platform an indication of a power state. In certain embodiments, the agent determines, based on the indication of the power state, that an interface is expected to be available. The agent may designate information for transmission via the first interface—e.g. in lieu of transmitting the information via a second interface which is available prior to the first interface becoming available.
摘要:
A method, apparatus, and system are disclosed. In one embodiment the method comprises determining whether a feature on a device is permitted to be enabled, determining whether a total number of enabled features on the device is less than or equal to a maximum number of allowable features on the device, and allowing the enabling of the device feature if the device feature is permitted to be enabled and the total number of enabled features on the device is less than or equal to the maximum number of allowable features on the device.
摘要:
Various embodiments are directed to a tri-layered power scheme for architectures which contain a microcontroller. In one embodiment, a power management system may comprise a microcontroller in a chipset, a low consumption power well to control a power supply to the microcontroller, and a power controller to control a power supply to the low consumption power well. The power management system may be arranged to switch among multiple power consumption states. In a maximum power consumption state, the microcontroller is on, the power controller is on, and the low consumption power well is on. In an intermediate power consumption state, the microcontroller is off, the power controller is on, and the low consumption power well is required to be on. In a minimum power consumption state, the microcontroller is off, the power controller is on, and the low consumption power well is optionally on or off at the discretion of the power controller. Other embodiments are described and claimed.
摘要:
Systems and methods of managing power provide for placing a processor in a non-snoopable state, where the processor is associated with a system memory. One or more data transfers between a controller and the system memory can be serviced while the processor is in the non-snoopable state. In one embodiment, it is determined that the processor has flushed an internal cache of the processor to the system memory before placing the processor in the non-snoopable state.
摘要:
In an embodiment, a processor includes a first domain with at least one core to execute instructions and a second domain coupled to the first domain and including at least one non-core circuit. These domains can operate at independent frequencies, and a power control unit coupled to the domains may include a thermal logic to cause a reduction in a frequency of the first domain responsive to occurrence of a thermal event in the second domain. Other embodiments are described and claimed.