CN201936298U

CN201936298U - PCI raiser card of asynchronously-extended system compatible with PCI interface

Info

Publication number: CN201936298U
Application number: CN2010205962039U
Authority: CN
Inventors: 林明政
Original assignee: Kunshan Wuchang New Precision Electronic Industry Co Ltd
Current assignee: Kunshan Wuchang New Precision Electronic Industry Co Ltd
Priority date: 2010-11-08
Filing date: 2010-11-08
Publication date: 2011-08-17
Anticipated expiration: 2020-11-08

Abstract

The utility model discloses a PCI raiser card of an asynchronously-extended system compatible with a PCI interface. The asynchronously-extended system comprises one PCI raiser card and a plurality of asynchronously-extended modules. The PCI raiser card comprises a PCI controller which is already set as a multifunctional apparatus, an asynchronous interface controller and an asynchronous interface. Each asynchronously-extended module respectively comprises a first asynchronous interface and a second asynchronous interface. After the first asynchronous interface and the second asynchronous interface are serially connected with each other, the first asynchronous interface is electrically connected to the asynchronous interface of the PCI raiser card. Each asynchronously-extended module is set with a number via the PCI controller. Then resource setting of each asynchronously-extended module is obtained via the asynchronous interface controller, and resources for corresponding addresses are allocated according to the resource setting of each asynchronously-extended module. In this way, when an operating system carries out program scanning, corresponding PCI configuration space is allocated to corresponding asynchronously-extended modules, and a signal conversion program is successively executed by the PCI controller.

Description

Be compatible to the PCI adapter of the asynchronous expanding system of PCI interface

Technical field

The utility model refers to a kind of PCI adapter of asynchronous expanding system of the PCI of being compatible to interface especially about a kind of PCI extending interface.

Background technology

Along with the computer technology development is maked rapid progress, computer peripheral and interface technology be and then evolution fast also, and ISA interface, the ISA interface used from early stage XT/AT computer are developed to the PCI interface that has plug and play and high frequency range now.

In general, the local bus-bar of the PCI of computer motherboard has high expandability, and 256 bus-bars of the highest support, each bus-bar can connect a plurality of PCI devices again; Moreover each PCI device more can be supported 8 PCI functions (Functions) again, and in brief, the PCI device can see through to set and is considered as 8 effective PCI devices by computer; Wherein setting means is, the PCI device provides two types set-up function, and one is single function PCI device (Signal Function Device); Another kind is multi-functional PCI device (Muti-Function Device).Be with, if computer motherboard on enough PCI slots are provided, then can support considerable PCI device.

Yet, for part special applications computer, for fear of original planning so single PCI slot only can be provided, but must connect more PCI devices in the application development later stage, then must eliminate and change whole group computer, perhaps please relevant dealer develop All-in-One PCI device, only the whole group of replacing computer is higher again for latter's cost, and the exploitation time-histories is long again, the therefore present PCI slot deficiency that has computer motherboard really, but must connect more PCI devices, be eliminated the awkward situation of changing and make existing host computer face.

The utility model content

Because above-mentioned prior art defective, the utility model fundamental purpose provides a kind of asynchronous expanding system of the PCI of being compatible to interface, only need a wherein PIC slot of computer motherboard, be that extendible several are compatible to the asynchronous expansion module of PCI device, computer hardware and operating system thereof all can be changed or be upgraded thus.

Desiring to reach the employed major technique means of above-mentioned purpose is the PCI adapters that make this asynchronous expanding system that is compatible to the PCI interface, wherein this asynchronous expanding system includes plural asynchronous expansion module, each asynchronous expansion module includes first and second asynchronous interface, with mutual serial connection; And this PCI adapter includes pci controller, an asynchronous interface controllor, a PCI interface and an asynchronous interface that has been set at multi-function device; Wherein this pci controller is electrically connected to this asynchronous interface controllor and this PCI interface, and this asynchronous interface is electrically connected to this asynchronous interface controllor again, and the PCI interface is for the PCI interface that is plugged on the computer motherboard.

From the above, the utility model mainly designs a kind of PCI adapter, the first asynchronous interface of the asynchronous expansion module of serial connection is electrically connected to the asynchronous interface of this PCI adapter, make this pci controller expand the numbering program to each asynchronous expansion module of serial connection, see through the resource settings that asynchronous interface controllor is obtained each asynchronous expansion module again, distribute corresponding address resource according to the resource settings of each asynchronous expansion module; Be with, with the PCI adapter for a PCI slot that plugs to the computer motherboard, be set and be multi-function device, can be numbered and the address resource settings is finished each asynchronous expansion module of serial connection, when making host computer start back operating system begin to scan, corresponding PCI configuration space can be distributed and give corresponding asynchronous expansion module, allow visual those the asynchronous expansion modules of computer operating system be effective PCI device, realize only utilizing the single PCI slot of computer motherboard, the purpose of the more PCI device that can increase.

Description of drawings

Fig. 1 is the system architecture diagram of the asynchronous expanding system of the utility model.

Fig. 2 is the asynchronous expansion module functional block diagram of the asynchronous expanding system of the utility model.

Fig. 3 is the string and the controller signal connection diagram of the utility model pci controller and plural asynchronous expansion module.

Fig. 4 is the sequential chart that the utility model PCI transition card and asynchronous expansion module are encoded and set.

Fig. 5 is that the utility model expands the numbering program flow diagram.

Fig. 6 is the utility model resource allocator process flow diagram.

Fig. 7 is the utility model PCI adapter function configuration space position and configuration position, the asynchronous expansion module space table of comparisons.

Fig. 8 is a structural representation after the utility model actual assembled.

Fig. 9 is the synoptic diagram of the asynchronous expansion module assembling of the utility model plural number.

Embodiment

At first see also Figure 1 and Figure 2, it is the system architecture diagram that adopts asynchronous expanding system one preferred embodiment of the utility model PCI adapter, it includes: a PCI adapter 10 includes pci controller 11, one asynchronous interface controllor 12, a PCI interface 13 and an asynchronous interface 14 that has been set at multi-function device; Wherein this pci controller 11 is electrically connected to this asynchronous interface controllor 12 and this PCI interface 13, and in have one and expand numbering program one resource allocator and a signal converse routine; This asynchronous interface 14 is electrically connected to this asynchronous interface controllor 12 again, and PCI interface 13 is for the PCI slot 311 that is plugged on the computer motherboard 31, as shown in Figure 8; In the present embodiment, this pci controller 11 is set at multi-function device; And plural asynchronous expansion module 20, corresponding eight PCI configuration spaces (FO～F7), and each asynchronous expansion module 20 includes first and second

asynchronous interface

22,23, with mutual serial connection, as shown in Figure 9, the first asynchronous interface 22 that will be connected in series asynchronous expansion module 20 again is electrically connected to the asynchronous interface 14 of this PCI adapter 10, make this pci controller 11 carry out earlier and expand the numbering program, respectively each asynchronous expansion module 20 of serial connection is numbered, see through the resource settings that asynchronous interface controllor 12 is obtained each asynchronous expansion module 20 again, resource settings according to each asynchronous expansion module 20 is distributed corresponding address resource, makes pci controller 11 carry out the signal converse routine smoothly.

Again, above-mentioned asynchronous interface 14 and each first and second

asynchronous interface

22,23 include plural address port, data port, read port respectively, write inbound port, asynchronous expansion module is selected port, signal is confirmed port, the replacement port, interrupt signal port and configuration access port.

Include as for above-mentioned each 20 of asynchronous expansion module: plural tandem port 25, sacrificial vessel have tandem port external device (ED) to peg graft; At least one port arranged side by side 26, sacrificial vessel have port external device (ED) arranged side by side to peg graft; And a string controller 21 arranged side by side, be electrically connected first and second

asynchronous interface

22,23, tandem port 25 and port arranged side by side 26, wherein should go here and there controller 21 arranged side by side according to tandem port 25 and port arranged side by side 26 quantity, default its resource settings, and when receiving that the first asynchronous interface 22 transmits PCI adapter 10 request resource settings is provided, see through the first asynchronous interface 22 set data that it is default and be sent to PCI adapter 10; Controller 21 arranged side by side should go here and there again in order to the signal between conversion tandem port 25 and the port arranged side by side 26 and the first asynchronous interface 22.

Please cooperate and consult Fig. 3 to shown in Figure 5, above-mentioned pci controller is carried out expansion numbering program and is comprised following steps: export an initial bit (STRAT BIT) and give the first asynchronous expansion module S40; Output sets three bits (DATABITO) S41 of numbering to the first asynchronous expansion module continuously; Export an initial bit (STRAT BIT) and give next asynchronous expansion module S42; Output sets three bit S43 of numbering to next asynchronous expansion module continuously; And the first two step of repetition S44 till all asynchronous expansion modules of setting are all finished.

As shown in Figure 3, because plural asynchronous expansion module 20 is with first and second

asynchronous interface

22,23 are connected in series mutually, the first asynchronous interface 22 with the first asynchronous expansion module 20 is connected with the asynchronous interface 14 of PCI adapter 10 again, the configuration PORT COM of the asynchronous interface 14 of this PCI adapter 10 only is connected to the configuration PORT COM of this first asynchronous expansion module 20 at this moment, therefore as shown in Figure 4, PCI adapter 10 sends first start bit unit, promptly trigger the numbering set-up function of the string controller 21 arranged side by side of the first asynchronous expansion module 20, promptly begin to count and receive the PCI adapter 10 follow-up numberings that transmit three bits this moment, and stored; At the same time, because PCI adapter 10 must be finished the setting of all asynchronous expansion module 20 numberings, so the first asynchronous expansion module 20 sees through the configuration PORT COM of the configuration PORT COM output trigger signals of the second asynchronous interface 23 to the first asynchronous interface 22 of this second asynchronous expansion module 20, make the numbering set-up function of the string controller 21 arranged side by side of the second asynchronous expansion module 20, promptly begin to count and receive the PCI adapter 10 follow-up numberings that transmit three bits this moment, and stored; In like manner, this second asynchronous expansion module 20 triggers settings of encoding of the 3rd asynchronous expansion module 20, so all finishes the coding setting up to all asynchronous expansion modules; Thus, PCI adapter 10 can be known asynchronous expansion module 20 quantity, and the information of each asynchronous expansion module 20 passback.

Please cooperate and consult shown in Figure 6ly, carry out resource allocators for this pci controller 21 and comprise following steps: output one is replied the resource settings request to each asynchronous expansion module S50; According to each asynchronous expansion module numbering, judge that each asynchronous expansion module replys its set data S51; Reach set data, distribute the address resource S52 of each asynchronous expansion module according to each asynchronous expansion module.

When booting computer is carried out operating system, can scan pci controller, operating system meeting this moment confirms earlier whether this pci controller is finished " expanding the numbering program " and reached " resource allocator ", if judge not finish and then carry out PCI Retry mechanism, till waiting for that pci controller is finished, after treating really to finish, computer operating system can be given corresponding asynchronous expansion module with corresponding PCI configuration space distribution.Below lift the mode that concrete instance explanation configuration space distributes, the string controller arranged side by side that at first makes each asynchronous expansion module is one to support four tandem ports (as RS232) and a port are arranged side by side arranged, and therefore can be adjusted into single string port (1S), two tandem ports (2S), four tandem ports (4S), a tandem and port arranged side by side (1S1P), the single port (2S1P) side by side of two tandems, the single port (4S1P) side by side of four tandems, single port (1P) arranged side by side, the four tandems local bus-bar 8 kinds of basic working modes such as (4S+Local Bus) of holding concurrently along with different application.

When the string of first asynchronous expansion module controller arranged side by side includes four PCI Bar (PCI Bar0, PCI Bar1, PCIBar2, PCI Bar3), wherein PCI Bar0 corresponds to tandem port address (RS232Serial Port Base Address), take 32 address spaces at most altogether, the locational space size takes up room according to the tandem port number decision that sets, with single string port (1S), its shared address space is PCI Bar0+0x00 to PCI Bar0+0x07; With two tandem ports (2S), then account for PCI Bar0+0x00 to PCI Bar0+0x0f, and three tandem ports or 4 tandem ports (3S, 4S) account for PCIBar0+0x00 to PCI Bar0+0x1f, if when setting no tandem pattern for, promptly do not open this Bar, that is PCI changes card and knows when this sets, and promptly can not make operating system to this Bar Resources allocation.

As for this PCI Bar1 then is the corresponding basic address of port (Parallel Port Base Address) side by side, its address space accounts for PCI Bar1+0x00 to PCI Bar1+0x07, if the basic address of corresponding local bus-bar (Local Bus Base Address) then its address space accounted for PCI Bar1+0x00 to PCI Bar1+0xff.If be set at (for example 1S, 2S, 4S) under the situation of having only Serial Port, do not open this Bar, not to this Bar Resources allocation.

PCI Bar2 then is that corresponding port side by side extends basic address (Parallel Port Extension Base Address), and its address space has accounted for PCI Bar2+0x00 to PCI Bar2+0x08.If pattern is not set under the clear condition of port arranged side by side, meaning promptly is to set as under the situations such as 1S, 2S, 4S, 4S+Local Bus, does not promptly open this Bar, not to this Bar Resources allocation.

As for PCI Bar3 then is the corresponding basic address of its function/state (Other Function/Status Base Address), its address space has accounted for PCI Bar3+0x00 to PCI Bar3+0x0f), this address space is forever effectively and take fixing space size.

Therefore, when each PCI Bar of string controller arranged side by side configures pattern according to its tandem port or port number arranged side by side, when the PCI adapter is inquired, this resource settings repayment can be given the PCI adapter.

The corresponding first asynchronous expansion module of the first function configuration space that below further specifies this PCI adapter is set the mode of its address space, sees also shown in Figure 7ly, is the table of comparisons of the corresponding first asynchronous expansion configuration address of the first function configuration space address.Distributing to the PCI adapter first function configuration space (Multi-Function 0) resource that is set at multi-function device when computer operating system is: Bar0:0xc000,8address location; Bar1:0xc400,8/256address location; Bar2:0xc800,8address location; And Bar3:0xd000,16address locaion.

The resource settings that makes the PCI adapter obtain from the first asynchronous expansion module is again used PCI Bar0～PCIBar3 for needing, and Bar0 accounts for 8 address spaces, Bar1 and accounts for 8/256 address space, Bar2 and account for 8 address spaces, Bar3 and account for 16 address spaces; Therefore, Bar0～3 that are about to the first function configuration space correspond to Block0～3 of the first asynchronous expansion module.

Below careful further how see through the PCI adapter the first asynchronous expansion module carried out the data access of different address with the first asynchronous expansion module explanation operating system, meaning i.e. this PCI adapter is promptly carried out the signal converse routine.

Be adjusted into tandem and port arranged side by side (1S1P) application with the string of asynchronous expansion module controller arranged side by side, this tandem port addressing space accounts for 8 address spaces altogether, side by side the addressing space of the basic address of port accounts for 8 address spaces, the port addressing space that extends basic address accounts for 8 address spaces side by side, other then accounts for 16 address spaces, and supposes that the first asynchronous expansion module addressing space is 0x00 to 0x07.Thus, when operation system during to 0xc000～0xc0007 access, the data that the address that asynchronous interface address port can be sent 0x00～0x07 removes access Address Block 0; Again when the operation system sees through the PCI adapter to 0xc400 to 0xc407 access, the address port of asynchronous interface can be sent the data that the address of 0x08 to 0x0F removes the Block 1 of the access first asynchronous expansion module; Moreover, if operating system is during to 0xc800 to 0xc807 access, the address port of asynchronous interface can be sent the address of 0x10 to 0x17, go the data of the Address Block 2 of the access first asynchronous expansion module, when system during to 0xd000～0xd00F access, the address port of asynchronous interface can be sent the address of 0x18～0x27, goes the data of the Address Block 3 of the access first asynchronous expansion module.

From the above, the utility model mainly designs a kind of asynchronous expansion module, its pin position is few than the PCI device, and adopt the non-synchronous transmissions mode, and can directly be connected in series connection and needn't add impact damper, as shown in Figure 8, cooperate PCI adapter 10 for a PCI slot 311 that plugs to computer 30 motherboards 31 again, be set and be multi-function device, and to each asynchronous expansion module of serial connection finish expand numbering program and resource allocator after, and when computer 30 start back operating systems scan, computer can give each asynchronous expansion module with corresponding PCI configuration space distribution, allow visual those the asynchronous expansion modules of computer 30 operating systems be effective PCI device, realize only utilizing the single PCI slot of computer motherboard, more PCI device can increase.

Claims

1. PCI adapter that asynchronous expanding system is used is characterized in that:

This asynchronous expanding system includes plural asynchronous expansion module, and each asynchronous expansion module includes first and second asynchronous interface, with mutual serial connection; And this PCI adapter includes a PCI interface and an asynchronous interface that a pci controller, an asynchronous interface controllor, have been set at multi-function device; Wherein this pci controller is electrically connected to this asynchronous interface controllor and this PCI interface, and this asynchronous interface is electrically connected to this asynchronous interface controllor again, and the PCI interface is for the PCI interface that is plugged on the computer motherboard.

2. PCI adapter as claimed in claim 1 is characterized in that this pci controller is set at multi-function device and includes eight PCI configuration spaces.