Abstract:
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.
Abstract:
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.
Abstract:
A patch mechanism is described, which can be used to detect and workaround defects and conditions existing in an integrated circuit chip. The patch mechanism includes a trigger-matching logic incorporated within an integrated circuit chip to capture an incoming request cycle and determine if the captured incoming cycle matches one or more of trigger conditions. The patch mechanism further includes a control logic coupled to the trigger-matching logic to select a set of instructions upon detection of at least one matched trigger condition and to execute operations corresponding to the selected set of instructions. The control logic is configured to select the set of instructions based on the at least one matched trigger condition.
Abstract:
Embodiments of the invention are generally directed to a methods, apparatuses, and systems for quiescing a processor bus agent. In one embodiment, a processor initiates the establishment of a protected domain for a computing system. A processor bus agent coupled with the processor is quiesed to reduce the potential for interference with the establishment of the protected domain. Other embodiments are described and claimed.
Abstract:
According to one embodiment, a computer system is disclosed. The computer system includes a flash memory device, a serial peripheral interface (SPI) coupled to the flash memory device, a network controller coupled to the SPI; and a chipset coupled to the SPI. The chipset includes an arbiter to arbitrate between the network controller and the chipset for control of the SPI to access the flash memory device.
Abstract:
A system is described for providing a patch mechanism within an input/output (I/O) controller, which can be used to workaround defects and conditions existing in the I/O controller. The system includes a patch module coupled to a completion queue included in the I/O controller. The patch module is used to sample incoming cycles received by the I/O controller and to determine if the captured incoming cycle matches one or more of preprogrammed trigger conditions. The patch module is capable of working around a captured non-posted request cycle by controlling header information loaded into the completion queue and by instructing the completion queue whether or not to discard a completion received from a designated end-device.
Abstract:
Apparatus and a method for utilizing a memory bus write buffer to blend up-to-date data stored in a processor cache and being written back to memory with data in the write buffer being written to the same memory address by a bus master in order to maintain data coherency. The circuitry also utilizes the memory bus write buffer to write valid data furnished in a bus master write over up-to-date data in the write buffer being written to the same memory address from a processor cache in order to maintain data coherency. Combining the data from the two sources prior to writing it to memory eliminates at least one write operation by the write controller along with any associated ECC value generation, may eliminate a number of read/modify/write back operations with any associated ECC value generations, and can double the effective depth of the buffer.
Abstract:
A method, apparatus, and system to synchronize multiple host controllers with non-uniform frame rates. The apparatus includes a first host controller, a second host controller, and logic. The first host controller is configured to access memory at a first frame rate. The second host controller is configured to access the memory at a second frame rate which is different from the first frame rate. The logic is coupled to the first and second host controllers to synchronize the memory accesses of the first and second host controllers at a common frame rate. Other embodiments are described.
Abstract:
According to one embodiment, a computer system is disclosed. The computer system includes a flash memory device, a serial peripheral interface (SPI) coupled to the flash memory device, a network controller coupled to the SPI; and a chipset coupled to the SPI. The chipset includes an arbiter to arbitrate between the network controller and the chipset for control of the SPI to access the flash memory device.
Abstract:
A method and apparatus is disclosed for providing an interlocked broadcast message that solves the problem of a system component taking action in response to a broadcast message issued by a processor before the processor receives communication that the broadcast message has been delivered. A broadcast message transaction request is issued from a processor. The broadcast message transaction request is posted in a transaction request buffer. A reply is communicated to the processor that the broadcast message transaction request has been posted, and the broadcast message is then delivered over the bus. In an alternative embodiment, after the broadcast message transaction request is issued from the processor, the broadcast message transaction request is stored in a transaction request buffer. The broadcast message is only delivered over the bus once it has been determined that the reply to the processor that the broadcast message transaction has completed can be immediately delivered to the processor following the delivery of the broadcast message.