A kind of Godson blade integrated graphics card
The present invention relates to the mainboard integrated graphics card, specifically, relate to a kind of Godson blade integrated graphics card.
On present market, realize the Presentation Function of Godson platform, what adopt such as the 2F platform is video card independently; Mostly be to adopt embedded video card, such video card function and performance are all lower, to some product just to some extent restrictions high to graphics request. and present PC video card all is to the X86 platform; Presentation Function all relies on the X86 platform. and, adopt embedded video card for the Godson blade, so just do not reach requirement. just need a kind of method to realize that the PC video card can be supported at the Godson platform. for the X86 platform; General server; Show the mode that all adopts shared drive, because in demonstration and CPU accessing competition internal memory, the X86 platform has a kind of arbitration mechanism; Feasible demonstration can preferentially obtain the internal memory service, like this to just not influence of display performance.And, do not have this arbitration mechanism, so, will influence the performance of demonstration if adopt shared drive for the Godson platform.
Summary of the invention
In order to solve in the Godson blade, the problem that video card capabilities is low the invention provides a kind of Godson blade integrated graphics card.
A kind of Godson blade integrated graphics card comprises the RS780E north bridge chips, DDR video memory particle, video memory scheduler module, clock correction module, communication module and video memory administration module;
The video card core is integrated in the said RS780E north bridge chips, and single capacity of said DDR video memory particle is 64MB, is distributed in the north bridge chips both sides; Said video memory scheduler module is responsible for to internal memory application space with expansion video memory capacity when the video memory capacity is not enough; Said clock correction module assurance video memory particle is communicated by letter with said video card core with same time-delay with same frequency; Said communication module is responsible for CPU and video card directly communicates through the HT bus; Said video memory administration module is responsible for video memory with much channel communication with the communication of video card core.
Preferably, the dispatching method of said video memory scheduler module is:
Program is to video memory scheduler module application video memory, and vacant video memory capacity then distributes when enough; If vacant video memory is not enough to reach the size of application, video memory scheduling chip no longer takies the video memory space directly to the internal memory application.
Preferably, if Insufficient memory then goes back to the video memory space, the shared space of program that is surpassed threshold time the off-duty time discharges said video memory scheduling chip, distributes then when the application memory headroom; If also be not enough to distribute, do not distribute when then not distributing the waiting space enough.
Preferably, said clock correction module is done delay process to the fast particle of clock operation when the video memory particle is asynchronous.
Preferably, said video memory particle adopts four Samsung DDR 64MB video memory particles to constitute 256MB video memory space.
Preferably, said video memory administration module can discharge the fragment of in video memory, piling up behind the video memory to program to be put in order, connects into continuous video memory space.
Video card provided by the invention efficiently solves because of the not enough low problem of Godson blade capabilities that is caused of video memory, simultaneously, has added special administration module, makes video card capabilities than significant progress has been arranged before.
The Godson blade adopts the RS780E chip of AMD as north bridge chips at present; And integrated video card in the RS780E chip; But when on the X86 machine, moving; Use be the communal space of internal memory as the video memory space, obvious like this have very big restriction to performance, so the present invention has added independently the video memory particle and module improves video card capabilities.
The video memory that the present invention adds has used four Samsung DDR 64MB video memory particles, and the Samsung internal memory performance is stable, is known in the industry, so blade stability has very big benefit.
The present invention has also comprised the video memory scheduler module, clock correction module, communication module and video memory administration module.
The video memory scheduler module: this module is mainly used in the distribution in video memory space and scheduling, and when program application video memory space, whether the video memory scheduler module is at first searched the video memory space enough, if satisfy, then distributes; If not enough, then, no longer take the video memory space directly to the internal memory application communal space, if internal memory is also not enough, then do not do distribution, make program wait for.
The clock correction module: this module is used for four internal memory particles are carried out synchronously, and asynchronous as if having particle, then that working time is forward particle carries out delay process.
Communication module: this module is responsible for the video card displaing core and Godson CPU communicates through the HT bus.
The video memory administration module: this module is used the hyperchannel working method with four internal memories, and simultaneously, when little in a large number discontinuous video memory space occurring in the video memory, this module can also be carried out the defragmentation function, makes that the video memory space is continuous, so that the back is distributed.