TW201216080A - Server system and method for using shared baseboard management controller - Google Patents

Abstract

A server system and a method for using a shared baseboard management controller (BMC) are provided. The server system comprises a plurality of nodes, a hub and a management board. Each of the nodes comprises a plurality of pins. The hub comprises a plurality of connection ports and a switch, in which the connections ports are respectively connected to the pins of corresponding nodes and the switch is used to switch among the connection ports. The management board comprises a BMC connected to the switch. When receiving a request command for one of the nodes, the BMC controls the switch to switch the connection port to connect the node to the BMC and sends an installation signal to the node through a general purpose output (GPO) pin, so as to notify the node to install a video interface driver. After the installation is completed, the BMC enables the node to use the peripheral device connected by the management board through a device management function of the BMC.

Description

34906twf.cdocA 201216080 1 w VI. Description of the Invention: [Technical Field] The present invention relates to a server system and method, and more particularly to a server system and method for sharing a substrate management controller. [Prior Art] As far as the application side of the server is concerned, 'if it is a data center, each node (N〇de) in the system includes a video image array ("Video Graphics Array, VGA)淳Components such as serial port and Baseb〇ard Management Controller (BMC) increase the cost of manufacturing invisibly, and waste the functionality and repeatability of the functions provided by the components themselves. Because most of the time, the VGA port and serial port on the node are idle, and the functions of the baseboard management controller can be shared. Any unnecessary components (such as VGA port, serial port) are included in the mass-produced product, or functionally repeatable components (such as the substrate management controller) are placed on the node, and the price of the product is relatively Increase, competitiveness will also decline. If the VGA port or sequence is removed from the node, then the problem is at the product development stage. Many of the projects in the process of the tester must interact with the face-to-face human machine, so the VGa sequence is now This stage is an indispensable tool. How to balance the necessity of product development J5 white & and the competitiveness of products has become a hot potato to be solved. ~

201216080 100433.TW 34906twf.cdoc/I SUMMARY OF THE INVENTION The present invention provides a server system that shares a substrate management controller that allows a plurality of nodes in a feeder system to share a single substrate management controller. The invention provides a method of sharing a substrate management controller by switching a connection of a substrate management controller to a node selected by a user to operate the node using a device management function of the substrate management controller. The present invention proposes a server system f ’ that shares a baseboard management controller including a plurality of (four) points 'hubs and daughter boards. Each node includes two pin pins, a first input pin and a first output pin. The hub system has a plurality of ports and switches that connect the first connection pins of the corresponding node, the first input, and the switch is used to switch the ports. The daughter board includes a = unit and a controller, where the baseboard management:: the second input pin of the chat, and is used to connect the switch and the connection mechanism to control the state of the control system for the above mentioned two management just:? In order to connect the node to the base unit of the substrate function, the switch is switched to connect the 201216080 1UU4JJ.1 w 34906twf.cdoc/I interface to connect the node. In the consistent embodiment of the present invention, the substrate management controller outputs a removal signal to the first input pin of the currently connected node through the second output pin before notifying the node to be switched to install the video interface driver. The node is notified to remove the video interface driver, and the second input pin is used to receive the removal signal of the video interface driver transmitted by the node through the first output pin. In the embodiment of the present invention, each of the nodes includes a chip set and a signal generator, and the first connection pins of each node are respectively disposed in the chip set and the signal generator. In an embodiment of the invention, the node nodes are disposed on a substrate and connected to a connection port on the hub through a common interface on the substrate. In the implementation of the present invention, the upper sub-board further includes a switching unit, which is a control unit for the substrate management controller and the switch, and can be configured to make the (four) node and the device of the controller according to the request command. Management Wei is more than H, and the control pin of the (four) signal changer is sent to control the switcher to switch the port. The present invention proposes a method for sharing a baseboard management controller, which is applicable to a server system including a plurality of nodes, hubs, and daughter boards, which are connected to a substrate on a sub-board through a collecting line H; I; a (four) device. The method of the substrate controller controls the receiving user to instruct the one of the nodes, and controls the switching of the weave ||± to switch to the node where the request command is switched to and output through the second infeed pin— Installation signal] 201216080 100433.TW 34906twf.cdoc/I Request the instruction to switch to the node. According to the connected (4) installation signal, the video interface is installed, and after the completion of the P, the third pass through the first-output pin-return signal-to-substrate control control_the second input pin. After the substrate (4) receives the completion signal, the node can use the peripheral device connected to the daughter board through the device management function of the substrate management control (4). In the embodiment of the invention, the node is installed according to the installation signal; the step of the I-axis program includes (4) the (four) device updates the node's state of the node by using the AXIN, and triggers the system to start the node operation. Interface driver under SiS! I. Next, the interface driver checks the general state of j, and calls the first control method to notify the operating system to install the video interface crane program, and after the installation is completed, calls the method to notify the controller to output the installation completion signal. In the embodiment of the present invention, after the step of the substrate management controller controlling: switching the switch on the line of the line to the node, the connection interface driver of the node corresponding to the management of the button is not included. The notification operation system re-scans the node connection interface to pass the speed device management function (4) the edge device connected to the daughter board. In an embodiment of the present invention, after the step of switching from the substrate management controller to the throttling step by the substrate management controller, the (four) line device uses a pull-up register to pull up the substrate management controller. a second input pin and a second output pin. In an embodiment of the present invention, after the step of the substrate management controller receiving the request command from the node, the substrate management control is further included.

201216080 iuuhjj. i w 34906twf.cdoc/I output through the second output pin - remove the signal to the camera connection and control the county board! The device management Wei == the first input pin. The node removes the video interface driver according to the "removal" message, and after the removal is completed, the signal is input to the second input pin of the baseboard management controller through the first-in-situ-sounding domain ☆ signal. In the example of the invention, the step of removing the fluoroscopic driver by the node according to the removal signal includes updating the recording state of the node by the throttle control (4), and triggering the interface of the operation of the node of the system. Then, the interface is driven to check the general state, and it is called the first control method (4) to remove the view sfl interface driver. After the video interface driver is removed, the interface driver calls the second method. (4) Knowing the controller (4) Removing the completion signal 0 f In the embodiment of the present invention, after the step of switching the switch on the baseboard management controller control hub to the node, the node corresponding to the base station management control is further included in the node (4) The device management interface driver of the device management system notifies the operating system to rescan the connection interface of the node to release the peripheral device to which the daughter board is connected. μ In an embodiment of the present invention The foregoing sub-board includes an Enclosure Management Board (Enclosure Management Board, ΕΜΒ). The device management functions of the above-mentioned substrate management controller include a keyboard, a video, a mouse (Keyb〇ard Video Mouse, KVM) control function. The connection unit includes a Video Graphics Array (VGA), a Universal Serial Bus (USB) port, or a network connection 201216080.

I00433.TW 34906twf.cdoc/I The above-mentioned 'four (4) common board management control ^ system and method is to connect multiple nodes of the ship n system through the hub to the user-selected node switching hub On the upper switch, and before switching to the point, first notify the node through a specific connection pin to install the video driver 'Make the node connect to the baseboard management controller' directly through the substrate management device Connect the _ side device. The above features and advantages of the present invention will become more apparent from the following detailed description of the embodiments. [Embodiment] In order to make a high-density platform in a limited space, the researcher is bound to make the gap between the individual pieces on the motherboard as close as possible. Finally, in order to free up more space and reduce the unit's production costs, some components that are not necessary for sharing or mass production become the best option to be removed. In the data center, VIDE〇Graphics Army ' VGA 珲, serial 埠 (Serial is not necessary, and the Baseb〇ard Management Controller (BMC) can share one, and then Nowadays, the substrate management controller includes the VGA controller and the network function, so the entire system is sufficient as long as there is a substrate management controller corresponding to the application of the data center. FIG. 1 is a first embodiment according to the present invention. Example of shared substrate management 201216080

v* 34906twf.cdoc/I The server system block diagram of the controller. Referring to FIG. 1, the server system 100 of the present embodiment includes four nodes H0, 120, 130, and 140, and a hub 150 and a sub-board 160. The functions are as follows: The nodes 110, 120, 130, and 140 are respectively A stand-alone computer system that includes a ten-phase processing unit (Central)

Processing Unit (CTU), memory, Northbridge, Southbridge, network chip and other computer components can be used as a data center. The hub 150 is, for example, a middleplane having a port 152, 153, 154 and a switch 155, wherein the ports 151, 152, 153, 154 are connected to nodes no, 12, 13 and A plurality of pins of 140 are connected, and a switch 155 is connected to the ports 151, 152, 153, 154, respectively, to switch between the ports. In this embodiment, each of the nodes and the connection pin includes 11 first connection pins (CON 1), 1 first input pin, and first root output pin, and the first input pin is, for example, a universal input. (GeneralPurp〇seInput, GPI) pin (ie, GPI, and the first output pin is, for example, a General Purpose Output (GP0) pin (ie, GP〇1), but is not limited thereto. The daughter board 160 is, for example, a device management daughter board. (Encl〇sure Management B(10)rd'EMB) 'The connection unit 161 and the baseboard management controller 162 are disposed thereon. The connection unit 161 is, for example, a VGA port, a Universal Serial Bus (USB) port, The *T is used to connect to a peripheral device (not shown) such as a keyboard, a mouse, a storage device, etc. The connection unit 161 can also be a network port, and available 201216080

100433.TW 34906twf.cdoc/I to connect to the remote unit. The substrate management controller 162 receives a request command from the user for the node, for example, through the peripheral device connected to the connection unit 16 (more specifically, 'the IPMI OEM command to the base management controller 162 is required to switch to a node). According to the control line 163, the control signal is sent from the control pin A to the pin A of the switch 155, and the switch 155 is controlled to switch the connected port, and the node requested by the request command is connected to the substrate. The controller 162 enables the node to use the peripheral devices connected to the daughter board 12 through the device management function of the baseboard management controller 162. The device management function of the substrate management controller 162 is, for example, a control function of a keyboard, a video, a keyboard (KVM), but is not limited thereto. For example, if the user wants to view the test surface and operation of the node 12, the mouse can be selected by using the mouse to select the node 12 and then the command to the substrate controller 162 to switch. To the node 12, the substrate management controller 162 transmits the control signal through the control pin A and the control line 163 according to the node 120 selected by the user to control the switch to switch to the connection with the node 120. 112, so that the node 12 can be connected to the substrate management controller 162, and the device management function of the H 162 can be controlled by the substrate manager to enable the display panel of the board 12 () The air conditioner and the storage device allow the user to view the measurement screen of the node 120 and use the keyboard and the mouse to operate the node 12, and the node U0 can be powered on or stored using the storage device. It should be noted that 'in order to achieve each node and substrate management controller 201216080

A hot plug function between 100433.TW 34906twf.cdoc/I 162. In this embodiment, a plurality of first connection pins (CON 1) corresponding to respective nodes are disposed on the substrate management controller 162. a second connection pin (c〇N 2), a second output pin (Gp〇2) corresponding to the first input pin (GPI1), and a second input pin (gpi2) corresponding to the first output pin (GP0 1) Used to connect the switch and connect to each node through the switch. DETAILED DESCRIPTION OF THE INVENTION Figure 2 is a diagram showing the configuration of a general-purpose input and output pin of a servo system 100 in accordance with a first embodiment of the present invention. Referring to FIG. 2, the substrate management controller 162 of the present embodiment transmits a mounting signal to the first input pin (GPU) of the node to be switched through the second output pin (GPO 2) to notify the node to install the video interface driver. The program, through the second input pin (GPI2), receives the installation completion signal of the video interface driver returned by the node through the first output pin (GPO 1), and accordingly controls the switch 丨 55 to switch through the control pin A. The connection is 埠 to connect the nodes. The indicator light 156 is illuminated after the node completes the video interface driver's clothing, to prompt the user that the node has been connected to the baseboard management control 162, and the device management capability of the baseboard management controller 162 can be used. For the server system 1 described above, the present invention also provides a corresponding operation method for appropriately assigning the device management function of the substrate management controller 162 to each node for use. 3 is a flow chart of a method of sharing a shared substrate management controller in accordance with a first embodiment of the present invention. Referring to Figure 3, the method of the present embodiment is applicable to the server system 100 of Figure 1, and the detailed steps of the method are illustrated below using the various components of Figure 1: 201216080

100433.TW 34906twfxdocA First, the request command for the user of one of the nodes 110, 12, 130, and 140 is received by the baseboard management controller 162 on the daughter board 120 (step S302). The node requested by the request instruction is selected, for example, by a user dialing a DIP switch on the daughter board 16〇 or by selecting a baseboard management controller command from a remote end, and is not limited herein. . According to the above request command, the baseboard management controller 162 then controls the switch 155 on the φ hub 150 to switch to the node to which the request command is requested to be switched (step S304), and outputs an install signal through the second output pin (GP02) to The first input pin (GPI 1) of the node to which the instruction is requested to be switched is requested (step S306). It should be noted that the high-speed Peripheral Component Interconnect Express (PCIE) interface used by the video controller does not support hot plugging itself. 'Additional support is required for hot plugging function'. The substrate management controller 162 switches to the node, and the node cannot use the video function of the baseboard management controller 162 to drive the video device. On the other hand, if the connection between the baseboard management controller 162 and the node is directly cut off (e.g., switching to another node), the node may cause a system crash or crash due to a sudden interruption of the video function. Therefore, in this embodiment, when the baseboard management controller 162 receives the handover request, it is notified that the node currently having the baseboard management controller 162 and the node to be switched are prepared. According to the above concept, the node of the embodiment starts to install the video interface driver after receiving the installation signal, and after the installation is completed, through the ς 13

201216080 an iwHjj.i w 34906twf.cdoc/I The first output pin (GPO 1) is passed back to the second input pin (GPI2) of the substrate management controller 162 via the first output pin (GPO 1) (step S308). When the substrate management controller 162 receives the installation completion signal, the node can use the peripheral device connected to the daughter board 160 through the device management function of the substrate management controller 162 (step S310). Wherein, since the node has completed the installation of the video interface driver, the video function of the baseboard management controller 162 can be used to implement the hot plug function by using the video device (e.g., display) to which the daughter board 16 is connected. It is worth mentioning that, for a transmission interface such as a Universal Serial Bus (USB), it is directly operable to be hot-swappable, even if the connection between the node and the substrate management controller 162 is switched, It will only cause the transmission of data to be interrupted without affecting the system operation of the node. Therefore, in this embodiment, the driver is not installed in advance for these interfaces. However, those skilled in the art can also pre-install drivers of other interfaces by referring to the above-mentioned method of installing the video interface to drive the Xinwang type according to actual needs. With the server system 100 architecture and the operation method thereof, the user can display the user interfaces of the nodes 110, 120, 130, 140 through the network and the substrate management controller 162 at the local end and the remote end, and The local and remote keyboards, mice, and storage devices can be used to maintain and manipulate the nodes 1201〇, 120, 130, and 140. 4 is a block diagram of a server system of a shared substrate management controller according to a second embodiment of the present invention. Referring to FIG. 3, the feeder system 400 of the present embodiment includes substrates 41, 420, 430, and 440, and a hub 201216080.

100433.TW 34906twf.cdoc/I 450 and sub-board 460, the functions of which are as follows: On the substrate 410, 420, 430, 440, two nodes and one common port are respectively arranged, for example, the substrate 41 is arranged on the substrate. The node 2 and the shared port 415, and the node 丨 further includes a chip set 411 and a signal generator 412'. The node 2 includes a chip set 413 and a signal generator 414. The chipset 411 of the node 1 has two first USB ports (USB portl), two second USB ports (uSBport2), and four high-speed peripheral component interconnects (PCIE). Pin (pciEport) and two first general-purpose input and output pins (GPI1/GP0 1), while node 丨 signal generator 412 has one USB clock pin (USB elk) and two PCIE clock pins (PCIE elk) ). These pins are connected to a common port 415 on the substrate 41A, respectively. Similarly, the pins on the chip set 413 and the signal generator 414 of the node 2 are also connected to the common port 415, and the type and number of the pins are the same as those of the chip set 411 and the signal generator 412, and details are not described herein. The hub 450 has four ports 451, 452, 453, 454 and a switch, wherein the ports 45, 453, and 454 are respectively connected to the corresponding ports on the substrates 410, 420, 430, and 440 (Fig. 3). Only the common connection 埠 415) connection is shown, wherein each of the common connection lines is connected to the connection port via a connection line containing 26 pins. In addition, the switch 455 is connected to the ports 451, 452, 453, 454 through two sets of wires (each of which includes 13 wires) to switch between the ports. The sub board 460 is, for example, a device management sub board on which the connection unit 461, the substrate management controller 462, and the switching unit 463 are disposed. Among them, the connection list 15 201216080

100433.TW 34906twf.cdoc/I connection port or USB port 埠, mouse, storage and other peripheral devices (not for example 461, a VGA port, network can be used to connect to the display, keyboard, drawing).

For example, the controller is connected to the peripheral device connected to the above-mentioned connection unit (4) (4). The request command for the above node is true, ΙΡΜΙ 〇 〇 命令 至 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板The switch 45s switches the connection tan to connect the node requested by the request command to the baseboard management controller 462 so that the node can use the peripheral device connected to the daughter board 460 through the device management function of the baseboard management controller 462. The device management functions of the substrate management controller 462 are, for example, keyboard, video, mouse, and storage control functions, but are not limited thereto.

μ corresponds to each of the 13 pins connected to the hub 45〇, and the substrate management controller 462 is also connected to the switch 45 of the hub 45 through 13 pins to be connected to the node through the switching of the switch 455. In Figure 3, left to right are a USB clock pin (uSB elk), two first USB pin (USB 1), two second USB pin (USB2), and four PCIE pin ( pciE), two pCffi clock pins (PCIE elk) and two general purpose input and output pins (Gpi 2/Gp〇2). The first USB pin (USB 1) is used as a storage device, the first USB pin (USB 2) is used as a keyboard and a mouse device; and the PCIE pin (PCIE) is used as a VGA control device. The universal input pin (GPI 2) is a universal turn-out pin (GP〇〇; the general-purpose output pin (GP〇2) is used to connect the nodes.

16

201216080 1UU433.TW 34906twf.cdoc/I Use the input pin (GPI 1). It should be noted that the 'substrate management controller 462 further includes a connection with the switching unit 463 through the pins A, B, C, D, E to output a control signal to the switching unit 463 according to the received request command, and the switching unit The 463 control switch 455 switches the port. The switching unit is composed of, for example, two AND gates 464, 465, a multiplexer 466, and a DIP switch 467. The switching unit 463 further includes control pins A and B that are connected to the switch 455, and can send the control signal to the switch 455 according to the requesting node and the device management controller 462 according to the request management device. The control pins A, B' switch the switch 455 to control the switch 455. The signal of the pin A of the substrate controller 462 of the δ sheep s is used to select the signal outputted by the pin B of the substrate management controller 462 or the signal output by the pin A of the dip switch 467. For example, when the signal outputted by the pin A of the substrate controller 462 is 〇, it means that the signal output by the pin A of the finger switch 467 is selected; if it is ,, the pin B output of the substrate management controller 462 is selected. Signal. The signal output by the pin B represents the code of the node selected by the substrate management controller 462. For example, the signals of the 〇 and 丨 are output through the three pins to represent the nodes 丨8, respectively, but the number of the pins can be determined according to the system. Depending on the number of nodes connected, it is not limited to this. The pin C represents whether the device management function of the substrate management controller 462 has been released. For example, when the signal output from the pin C is 〇, the device management function representing the substrate management controller 462 has been released, so that it is not necessary to isolate the node and 17

34906twf,cdoc/I 201216080

XV/VT-ί-». A VT substrate & (4) $ 462 _ link; if the device management function of the café controller 462 is not (four), therefore between the 3 points and the substrate management controller 462 Link. It is necessary to separate the stitches A:B of Langqili=opening 67 to the pins D and E of the substrate S, and the function of the stitch b of the fingering 46? is used to force the stitches of the finger switch 46? A goes to the unloading point' or selects the node selected by the substrate management controller 462. When the pin b of the dip switch 467 transmits the signal 〇 to the pin E of the substrate management controller 462, the base management controller 462 is notified to select the forced use of the dip switch. Pin A of 467 selects the node, and pin A of DIP switch 467 transmits a signal to the substrate management controller pin d to inform the substrate management controller 462 of its selected node. On the other hand, when the pin B of the dip switch 467 transmits the signal 丨 to the pin E of the substrate = controller 462, it represents the node selected by the pin a of the substrate management controller 462. When the signal of the pin A of the substrate management controller 462 is ,, the pin A of the dip switch 467 is selected to select the node; when the signal of the pin a of the substrate management controller 462 is 1, the management is controlled according to the substrate. The signal output from pin B of device 462 is to select the node. It is worth mentioning that the substrate management controller 462 further includes a pin C connected to the switch 11 by a pin F, which is used to signal the pin a of the Latch knife 455. And when the signal changes from 〇 to 1, the latching of the signal of the pin A of the switching state 455 is released, so as to switch the node. '''

201216080 1UU433. i W 34906twf.cdoc/I For example, when the pin C of the substrate management controller 462 outputs a chirp signal, the device management function of the substrate management controller 462 has been released, and when the dip switch 467 is When the pin B also outputs the chirp signal, the gate 465 outputs a chirp signal to the control pin b of the switch 455 to release the isolation between the node and the substrate management controller 462. At this time, the multiplexer 466 selects the signal of the pin B of the substrate management controller 462 to the control pin A of the switch 455 according to the signal output from the pin A of the dip switch 467 to control the switch 455 to switch to the substrate. The management controller is connected to the pin B. The connection 埠n is changed by the substrate management device 462 to the signal of the pin F from ❹ to 解除 to cancel the f capture of the signal of the pin a of the switch 455. And the switching of the execution node. = The above-mentioned health system 働, the present invention also provides a corresponding operation method to replace the node to which the baseboard management controller is connected, so as to be appropriate. The device management function of the management controller 462 is given to each node. The second right converter 455 includes two cases when performing the switching, and one type of device has any node using the substrate management function, and the other is It is currently the ρ right (four) 2 device s 462 installed management of the existing point-to-point substrate management control details. Happening. The following is a separate embodiment - the third embodiment of the embodiment (four) lying on any node using the substrate management 衩 device 462 device management function third embodiment _ / lower. Figure 5 is a flow chart of a method for controlling (4) of Figure 4, 2/, and County Board (4) in accordance with the present invention. The method of the first embodiment is applicable to the feeder system of Fig. 4.

201216080 *-------* 34906twf.cdoc/I 400, the detailed steps of this method are described below using the various elements in FIG. 4: First, the substrate management controller 462 on the daughter board 460 receives the user's a request instruction of one of the nodes 1 to 8 (step S5〇2), and the switch 455 on the control hub 450 switches to the node to which the request instruction is requested to be switched (step S504), and passes through the second output pin (Gp〇). 2) Outputting an install signal to the first input pin (GPI1) of the node to which the request command is requested to be switched (step S506). "After receiving the women's s hole number, a system interrupt is triggered to notify the operating system to perform the installation operation of the video interface driver (step S508), and after the women's wear, through the first output pin ( Gp〇1) returns a second completion pin ^KGPI2) of the installation completion signal to the substrate management controller 462 (step S510), wherein the system interrupt is, for example, a System Control Interrupt (SCI), In detail, FIG. 6 is a flow chart of a method for driving a video interface to drive shouting according to a third embodiment of the present invention. Please refer to (4) 6. In this embodiment, when the node receives the installation signal, The control signal is used to update the state of the node (step _). The controller is, for example, an ehipset on the substrate, and the installation signal is transmitted to the chip. A general-purpose status pin on the group, thereby updating the general state of the node (for example, updating to 〇). / Then the 'controller triggers-system interrupt to start the interface driver under the node's operation system|| (step S6G4) ). This interface axis For example, 201216080

100433.TW 34906twf.cdoc/I Advanced Configuration and Power Interface (ACPI) driver that uses an advanced architecture power interface table (ACPI table) provided by the operating system to call a variety of different control methods To notify the operating system to perform corresponding actions such as power management. Then, the interface state is checked by the interface driver, and the first control method is called to notify the operating system to install the video interface driver (step S606). The first control method is, for example, an advanced architecture power interface

A notification program written in the ACPI Machine Language (AML) code. When the interface driver calls the notification program, a notification is sent to the operating system to request the operating system to install the video interface driver. After the operation system completes the installation of the video interface driver, the interface driver then calls the second control method to notify the control installation completion message (step S608), so that the substrate management controller 462 can perform the installation according to the completion signal. Next - one step. This second control method is, for example, also a notification program written by the AML code. - Returning to step S510 of FIG. 5, when the substrate management controller 462 receives the wire completion signal output by the node, the node can be connected by the device management function of the substrate management controller 462 using the daughter board (step S512). ). It should be noted that after the substrate management controller 462 receives the installation completion signal output by the node, the embodiment further includes a connection interface driver (for example, USB) of the device management function corresponding to the substrate management control 1462 in the node. Driver) notification (4) re-scanning node connection ^ 21

The 34906twf.cdoc/I 201216080 interface (not shown) uses peripheral devices connected to the daughter board 460 through the device management function. In addition, the embodiment also includes using a pull-up register (pull_Upregister) on the hub 450 (not continued), the second input pin (GPI 2) and the second output pin (GP0) of the substrate management controller 462. 2) The signal is pulled up to 1. By the above method, the server system 400 of the present embodiment can realize that a plurality of nodes share one substrate management controller and support the hot plug function of the baseboard management controller to enable the node to be managed by the device management controller. The function uses the peripheral device to which the daughter board is connected, and provides the user with access to this node. Fourth Embodiment The method of the present embodiment is applied to a case where the device management function of the substrate management controller 462 has been used by the node m, and it is necessary to switch from the node m to the node η. 7 is a flow chart of a method for sharing a baseboard official controller in accordance with a fourth embodiment of the present invention. Referring to FIG. 4, the method of the present embodiment is applied to the server system 4 of FIG. 4. The following detailed steps are used to describe the method using the components in FIG. 4: First, the substrate management controller on the sub-board 460 462 receives the user's request command for the node n (step S7〇2). At this time, the substrate management controller 462 outputs a 2-bit shift signal to the node currently connected to the substrate management controller 462 through the second output pin (Gp〇 2) to the ° pin (GPI1) (step S704). _Input At this point, node m triggers a system interrupt to notify the operating system to perform the removal of the video interface driver (step s write), and at 22 201216080

100433.TW 34906twf.cdoc/I After the removal is completed, a removal completion signal is returned through its first output pin (GPO 1) to the second input pin (GPI2) of the substrate management controller 462 (step S708). The baseboard management controller 462 is notified that the video interface driver has been removed.

In detail, FIG. 8 is a flow chart of a method for removing a video interface driver according to a fourth embodiment of the present invention. Referring to FIG. 8, in the embodiment, when the node m receives the removal signal, the controller of the node m uses the removal signal to update the general state of the node m (step s8〇2). The controller is, for example, a chip set on the substrate, and the removal signal is, for example, a general status pin that is transferred to the chip set, thereby updating the general state of the node m (eg, updated to. / Next, The controller triggers a system interrupt to start the node m, the interface driver under the system (step ||S8〇4). This interface driver is, for example, the driver of the advanced architecture power interface. Then, the interface driver checks the general state, According to the call of the first = system method, it is known that the job purely removes the video interface driver (step 〇 6). The first control method is, for example, a code written by eight codes, and a program is known as When the interface driver is called this notification program, the transmission will be notified to notify the operating system 'to request the operating system to remove the video interface to drive the crying + operating system to complete the movement of the video interface driver, the interface driver i two control methods In order to notify the controller that the output removal is completed, the substrate tube controller 462 can perform the next step according to the security number. The second control method is, for example, 23 201216080

1UU4J3.iw 34906twf.cdocA is also a notification program written in AML code. Returning to step S708 of FIG. 7, the substrate management controller 462 notifies the node m to remove the video interface driver, and further includes the switch 455 on the control hub 450 switching to the node n (step S710), and transmitting the second output. The pin (GPO 2) outputs an install signal to the first input pin (GPI1) of the node to which the request command is requested to be switched (step S712). After receiving the installation signal, the node automatically performs the installation operation of the video interface driver (step S714), and after the installation is completed, returns an installation completion signal to the baseboard management controller through the first output pin (GPO 1). The second input pin (GPI2) of 462 (step S716). After the node receives the installation signal, for example, by triggering a system interrupt to notify the operating system to perform the installation operation of the video interface driver, the detailed steps and the installation of the video interface driver in the third embodiment are performed. The actions are the same or similar, so they will not be described here. Finally, when the substrate management controller 462 receives the installation completion signal output by the node η, the node n can use the peripheral device connected to the sub-board 460 through the device management function of the substrate management controller 462 (step S718). - It should be noted that, because the USB interface is a hot-swappable interface, after the node m returns the removal completion signal, the connection interface driver corresponding to the device management function of the substrate management controller 462 in the node m, for example, The operating system of the notification node m rescans the connection interface of the node m to use the peripheral device to which the daughter board 460 is connected through the device management function. After the external point η returns the installation completion signal, the node n corresponds to the base.

201216080 100433.TW 34906twf.cdoc/I The connection interface driver of the device management function of the board official controller 462 also notifies the operation system of the node n to rescan the connection interface of the node n to use the sub-board 460 through the device management function. Connected peripherals. Furthermore, the embodiment also includes using a pull-up register (not shown) on the hub 45 to connect the second input pin (GPI 2) and the second output pin (Gp 〇 2) of the substrate management controller 462. The signal is pulled up to 1. By the above method, the server system 400 of the embodiment can realize the hot plug function of the substrate management controller supported by the plurality of nodes, so that the nodes can be freely switched to pass through the baseboard management controller. The device management function uses the perimeter to which the daughter board is connected to provide the user with the ability to switch between nodes for operation at any time. In summary, the server of the shared baseboard management controller of the present invention achieves the control function of all nodes 1 month video and mouse (KVM) by sharing a substrate management controller, thereby reducing the production cost. In addition, by pre-notifying the node to install or remove the video interface before the node makes the wire board management control function, the user can be provided to switch the node at any time to perform the operation. The above has been disclosed in the above embodiments, but it is not intended to limit the present invention, and it is generally known in the art, and the spirit and scope of the present invention can be made without departing from the scope of protection of the invention. Patent scope: two copies [simple description of the schema] 25

201216080 34906twf.cdoc/I FIG. 1 is a block diagram of a server system of a common substrate management controller according to a first embodiment of the present invention. 2 is a diagram showing a general-purpose input/output pin configuration diagram of the word processor system 100 according to the first embodiment of the present invention. 3 is a flow chart of a method for sharing a substrate management controller according to a first embodiment of the present invention. 4 is a block diagram of a server system of a common substrate management controller according to a second embodiment of the present invention. FIG. 5 is a flow chart of a method for sharing a substrate management controller according to a third embodiment of the present invention. FIG. 6 is a flow chart of a method for installing a video interface driver according to a third embodiment of the present invention. FIG. 7 is a flow chart of a method for sharing a substrate management controller according to a fourth embodiment of the present invention. FIG. 8 is a flow chart of a method for removing a video interface driver according to a fourth embodiment of the present invention. [Description of Main Component Symbols] 100: Server System 110, 120, 130, 140: Node 150 '450: Hub 120, 460: Daughter Boards 151, 152, 153, 154, 45 Bu 452, 453, 454: Port 155 , 455: Switcher

201216080 100433.TW 34906twf.cdoc/I 156: indicator lamps 160, 460: daughter boards 161, 461: connection unit 162, 462: substrate management controller 163: control lines 410, 420, 430, 440: substrates 411, 413: Chip set 412, 414: signal generator 415: common connection 埠 463: switching unit 464, 465: and gate 466: multiplexer 467: finger switches S302 to S310: common substrate management controller of the first embodiment of the present invention Method steps S502 to S512: method steps S602 to S608 of the common substrate management controller according to the third embodiment of the present invention: steps S702 to S718 of the video interface driver of the third embodiment of the present invention: fourth embodiment of the present invention Method for sharing the substrate management controller Steps S802 to S808: Step 27 of the method for removing the video interface driver according to the fourth embodiment of the present invention

Claims (1)

34906twfxdoc/I 201216080 VII. Patent Application Range: 1. A server system sharing a substrate management controller, comprising: a plurality of nodes, each of the nodes comprising a chipset and a signal generator, and a plurality of first connection pins, a first input pin and a first output pin, wherein the first connection pins of each of the nodes are respectively disposed in the corresponding chip set and the signal generator; a hub having a plurality of ports and a switch The switch ports respectively connect the first connection pins of the corresponding node, the first & input pin and the first output pin, the switch switches the connected port; and a daughter board, including: at least one a connection unit connecting at least one peripheral device; and a substrate management control H having a plurality of second connection pins corresponding to the first connection pins, a second output pin corresponding to the first input pin, and corresponding to The first output pin_-the second input pin, with 2 connected to the city device and the at least-connected single S, receives a request command for the ▲ one of the nodes 'According to the control of the switch connection, in order to cut the request of the u command, the controller makes the request command to switch to the === Γ management controller - device management function uses the week-an" The device includes the first wheel-in pin that is output to the node through the second wheel-out pin, and the node-video interface driver that is switched to receive the request command through the first input pin of the 3H Requested to cut 28 201216080 1〇0433: Πν 34906twf.cdoc/I The node that was switched to completes the signal through an installation of the first round of the needle program. The returned video interface driver 2. If the application of the first scope of the patent application (4) H is known to be changed to the ° medium driver, the first part of the connection is to the current connection node. -Transfer = The node removes the Wei Cai face shaft material, and Wei Yu === The vision that is returned by the first output pin:: The program removes the completion signal. I4 勒勒子板 Please refer to the feeding device system described in the first paragraph of the patent range, wherein the switchboard 7C is coupled to the baseboard management controller and a control of the switch, and the pin is based on the request command. The node and the state of use of the device management function of the substrate management controller send a control signal to the tearing foot of the city device to control the switcher to switch the port. 4' A method for sharing a baseboard management controller, which is applicable to a server system including a plurality of nodes, a hub, and a daughter board, and the nodes are connected to a baseboard management controller on the daughter board through the hub. The method includes the following steps: the baseboard management controller receives a request command for one of the nodes; the baseboard management controller controls a switch on the hub to switch to the node to which the request command is requested to switch; 29 201216080 iwu-tj_;.xyt 34906twf.cdoc/I The substrate management controller sends an installation signal through a second output pin to a first input pin of the node to which the request command is requested to be switched; _J the request The node that the instruction is requested to switch to installs a video interface driver according to the installation signal, and after the installation is completed, transmits a installation completion signal to a second input pin of the substrate management controller through a first output pin; And a device management function of the node that is requested to be switched by the request instruction through the baseboard management controller At least one peripheral device is connected to the daughterboard. 5. The method of claim 1, wherein the step of the requesting switch to the node to install the video interface driver according to the dress code comprises: requesting the request command The one of the nodes to which the switch is switched uses the installation signal to update a general state of the node; the controller triggers a system interrupt to start an interface driver under one of the operating systems of the node to which the request command is requested to be switched; The interface driver checks the general state, and calls a first control method to notify the operating system to install the video interface driver; and after the video interface driver is installed, the interface driver calls a second control method To inform the controller to output the installation completion signal. 6. The method of sharing a substrate management controller according to claim 5, wherein the substrate management controller controls the 30 201216080 iuwjj.i'W 34906twf.cdoc/I switcher switch on the hub After the node to which the request instruction is requested to be switched, the method further includes: 'the home interface is notified by the connection interface driver corresponding to the device management function of the baseboard management controller to re-sweep the operating system A connection interface of the node to use the at least one peripheral device connected to the field or the daughter board through the device management function. 7. The method of sharing a substrate management controller according to claim 5, wherein the switch is switched to the node to which the request command is switched to after the baseboard management controller controls the hub. The method further includes: the hub pulling up the second input pin and the second output pin of the baseboard management controller by using a pull-up register (pull_upregister). 8. The method of sharing a substrate management controller according to claim 5, wherein after the step of receiving the request command by one of the substrate management controllers, the method further comprises: the substrate management controller transmitting The second output pin wheel sends a removal signal to the first pin of the node currently connected to the baseboard management controller; and the node removes the video interface driver according to the removal signal, and saves the money 'Remove the completion signal to the second input pin of the baseboard management controller through the first-output pin_transfer. π 9. The method for sharing the substrate management control according to item 8 of the patent scope, wherein the node requested by the request instruction is switched according to the 31 201216080 ----------34906twf.cdoc /I removing the signal to remove the video interface driver includes: one of the nodes of the node to which the request instruction is requested to be switched uses the removal signal to update a common state of the node to which the request instruction is requested to be switched The controller triggers a system interrupt to initiate an interface driver under one of the operating systems of the node to which the request command is requested to be switched; the interface driver checks the general state and calls a first control method to notify the The operating system removes the video interface driver; and after the video interface driver is removed, the interface driver calls a second control method to notify the controller to output the removal completion signal. . 10. The method of sharing a baseboard management controller according to claim 9 wherein the switch is switched to the step of the node to which the request command is requested to be switched after the baseboard management controller controls the switch on the hub 'More includes: ▲ a connection interface driver corresponding to the device management function of the baseboard management controller in the node notifies the operating system to rescan a connection interface of the section 'point' to be disconnected using the sub-board The at least - side device. week