External device expansion card and data processing method for input and output external devices
An external device, input and output technology, applied in the direction of electrical digital data processing, digital data processing components, instruments, etc., can solve the problem of high cost of external devices and achieve the effect of reducing cost
Active Publication Date: 2019-06-28
HUAWEI TECH CO LTD +1
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Problems solved by technology
[0005] The present invention provides an external device expansion card and a data processing method for input and output external devices, which is used to solve the problem of high overhead for CPU access to I / O external devices in the prior art
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Embodiment Construction
[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0054] figure 1 A schematic structural diagram of Embodiment 1 of the external device expansion card provided by the present invention, such as figure 1 As shown, the external device expansion card includes: an interface unit 01, a memory unit 02, a memory unit controller 03, an input / output (Input / Output, referred to as I / O) external device for ...
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An external device expansion card and a data processing method for an input / output external device. The external device expansion card comprises: an interface unit (01) for being inserted on a memory card slot of a host, a memory unit (02), a memory unit controller (03), an input / output (I / O) external device (04) and an I / O external device controller (05). The external device expansion card may be directly inserted into the memory card slot of the host via the interface unit (01), and the memory unit (02) and the I / O external device (04) are integrated on the external device expansion card, such that the I / O external device controller (05) and the host may access the memory unit (02) directly by means of a physical address of the memory unit (02), namely, the I / O external device controller (05) and the host may read data in the memory unit (02) directly according to the physical address of the memory unit (02), thereby greatly reducing overhead for reading data from a memory by the host and the I / O external device (04).
Description
technical field [0001] The invention relates to communication technology, in particular to an external device expansion card and a data processing method for inputting and outputting external devices. Background technique [0002] Input / Output (I / O for short) peripheral devices are important components and hardware resources of a computer system. At present, I / O peripheral devices of mainstream computer systems mainly include two types, one is a traditional I / O peripheral device controller, and the other is a hardware accelerator expansion card. [0003] In the prior art, there are two coupling modes for the I / O peripheral device and the central processing unit (Central Processing Unit, CPU for short) of the computer system. Among them, the coupling method mainly adopted is based on the separation and loosely coupled interconnection implementation method of dedicated high-bandwidth peripheral buses such as Peripheral Component Interconnect (PCI for short) or PCI Express (PC...
Claims
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IPC IPC(8): G06F1/16G06F13/20
CPCG06F1/16
Inventor 常轶松张科崔泽汉陈明宇
Owner HUAWEI TECH CO LTD