公开(公告)号：US20070192516A1

公开(公告)日：2007-08-16

申请号：US11355677

申请日：2006-02-16

Applicant: Sharif Ibrahim ,  William Mahany ,  Larisa Troyegubova ,  Bishnu Karki ,  Kenneth Smalley

Inventor： Sharif Ibrahim ,  William Mahany ,  Larisa Troyegubova ,  Bishnu Karki ,  Kenneth Smalley

IPC: G06F13/28

CPC classification number: G06F13/4054

Abstract: A virtual FIFO automatic data transfer mechanism. A processor unit may allocate memory space within system memory for a data transfer operation. The processing unit may also program both a source device and a target device to perform the data transfer operation. After the programming, the source and target devices perform the data transfer operation without intervention by the processing unit until completion. The source device may store data into the allocated memory space, and indicate to the target device when it has stored a predetermined number of data bytes into the allocated memory space. In response to receiving the notification message, the target device may read the stored data from the allocated memory space, and indicate to the source device when the target device has read a predetermined number of data bytes from the allocated memory space.

Abstract translation: 虚拟FIFO自动数据传输机制。 处理器单元可以在系统存储器内分配用于数据传输操作的存储器空间。 处理单元还可以对源设备和目标设备进行编程，以执行数据传输操作。 编程完成后，源和目标设备执行数据传输操作，无需处理单元进行干预，直到完成。 源设备可以将数据存储到分配的存储器空间中，并且当其已经将预定数量的数据字节存储到分配的存储器空间中时，向目标设备指示。 响应于接收到通知消息，目标设备可以从分配的存储器空间读取所存储的数据，并且当目标设备从分配的存储器空间读取预定数量的数据字节时向源设备指示。