CN113448416B - A hot-swappable stable device and computer - Google Patents

Abstract

The invention discloses a hot plug stabilizing device and a computer, comprising: a close switch configured to switch on to issue a first close state signal in response to the hot plug device being stably in a fully plugged-in state and switch off to issue a second close state signal in response to the hot plug device not being in a fully plugged-in state or about to be unplugged; the out-of-band manager is configured to selectively record or update the in-place state of the hot plug device; a hot plug controller configured to power up the computer for the hot plug device in response to receiving a first close state signal from the close conductor if a live signal for the hot plug device is received from the backplane, and to power down the computer for the hot plug device in response to receiving a second close state signal from the close conductor if a live signal for the hot plug device is received from the backplane. The invention can avoid the unstable connection of the hot-plug equipment and improve the running stability and the communication speed of the computer and the hot-plug equipment.

Description

A hot-swappable stable device and computer

technical field

The present invention relates to the field of hot swapping, more specifically, to a hot swapping stable device and a computer.

Background technique

At present, servers often need 24 hours of uninterrupted time to start up, and for the current AI (artificial intelligence) and big data computing analysis, it often requires faster NVMe (non-volatile memory) SSD (solid state drive) to use. In recent years, hot-swapping technology has also been widely used. Hot-swapping refers to inserting or removing boards, cables or other devices in a system that is running at full speed without power failure. However, there are usually tolerances in the general chassis design of the prior art. If the tolerance is too large when the mold is opened, the shrapnel of the carrier (carrier) guide rail of the mechanism will be pushed too tightly during insertion, and the NVMe disk cannot be inserted normally at one time. Different people's habits of inserting disks will also lead to inconsistent speeds of NVMe disk insertion, and the insertion may be slower.

The above two points are likely to cause the PCIe (Computer Peripheral Component Interconnection Standard Extension) Link (connection) to slow down due to the prolonged instability time when inserted, such as PCIe Gen3->Gen2 or PCIe Gen4->Gen3, or Width reduction, such as PCIe Lane x4->x2 or PCIe Lane x4->x1, occurs and affects the transmission performance of the device.

There is currently no effective solution to the problem of degraded device transmission performance caused by unstable hot swapping in the prior art.

Contents of the invention

In view of this, the purpose of the embodiments of the present invention is to provide a hot-swap stable device and a computer, which can avoid the unstable connection of the hot-swap device, and improve the operation stability and communication speed of the computer and the hot-swap device.

Based on the above purpose, the first aspect of the embodiments of the present invention provides a hot-swap stable device, including:

The closed conductor is arranged on the side of the hot-swappable device, configured to conduct in response to the hot-swappable device being stably in the fully inserted state to send a first closed state signal, and in response to the hot-swappable device not being in the fully inserted state, or is about to be pulled out and cut off to signal a second closed state;

an out-of-band manager, connected to the closed conductor, configured to selectively record or update the presence status of the hot-swap device in response to receiving a first closed state signal or a second closed state signal from the closed conductor;

a hot-swap controller, connected to the closed conductor, configured to cause the computer to The hot-swap device is powered on, and the computer powers down the hot-swap device in response to receiving a second closed state signal from the closed conductor if the hot-swap device's presence signal is received from the backplane.

In some embodiments, the closed via is also grounded; the closed via is configured to send a low level as a first closed state signal to the out-of-band manager and the hot-swap controller.

In some embodiments, the closed via is also grounded; the closed via is configured to send a high level as a second closed state signal to the out-of-band manager and the hot-swap controller.

In some embodiments, the out-of-band manager is configured to periodically display the presence status to the outside world through the out-of-band channel after recording or updating the presence status of the hot-plug device.

In some implementations, the hot-swap controller is further configured to cause the computer to issue a An alert for a hot-swap device, and also causing the computer to issue an alert for a hot-swap device in response to losing a presence signal received from the backplane for the hot-swap device while receiving a first closed state signal from the closed conductor. Device alerts.

In some implementations, a hot-plug device that is stably in a fully inserted state is connected to the PCIe bus of the computer; The PCIe connection with the maximum rate and bandwidth compatible with the plug-in device.

In some embodiments, the closed conductor has a first mechanical structure that switches the on and off states; the first mechanical structure has a structure that prevents the closed conductor from being conducted when the hot-swap device is not in a fully inserted state, and /or pull out the first fool-proof structure of the hot-swap device under the condition that the closed conductor has been conducted.

In some embodiments, a second mechanical structure corresponding to the first mechanical structure is attached to the computer or the hot-swappable device, wherein the second mechanical structure has the function of preventing the hot-swappable device from being fully inserted. A second fool-proof structure for unplugging the hot-swap device when the closed conductor is turned on, and/or when the closed conductor has been conducted.

In some implementations, the presence signal of the hot-swappable device is Ifdet#; the hot-swappable device is configured to first conduct Ifdet# to the computer in response to being inserted, and to conduct the Ifdet# last in response to the hot-swappable device being pulled out. Cut Ifdet# from the computer.

A second aspect of the embodiments of the present invention provides a computer, including:

A central processing unit connected to the PCIe bus;

the backplane that carries the hot-swappable devices and connects to the central processing unit;

A hot-swappable stable device connected to the CPU and backplane, further comprising:

The closed conductor is arranged on the side of the hot-swappable device, configured to conduct in response to the hot-swappable device being stably in the fully inserted state to send a first closed state signal, and in response to the hot-swappable device not being in the fully inserted state, or is about to be pulled out and cut off to signal a second closed state;

an out-of-band manager, connected to the closed conductor, configured to selectively record or update the presence status of the hot-swap device in response to receiving a first closed state signal or a second closed state signal from the closed conductor;

a hot-swap controller, connected to the closed conductor, configured to cause the computer to The hot-swap device is powered on, and the computer powers down the hot-swap device in response to receiving a second closed state signal from the closed conductor if the hot-swap device's presence signal is received from the backplane.

The present invention has the following beneficial technical effects: the hot-swap stable device and the computer provided by the embodiment of the present invention are arranged on the side of the hot-swap device by using a closed conductor, and are configured to be in a fully inserted state in response to the hot-swap device being stabilized is turned on to signal a first closed state, and is turned off to signal a second closed state in response to a hot-swap device not being fully inserted, or about to be unplugged; an out-of-band manager connected to the closed conductor , configured to selectively record or update the presence status of the hot-swap device in response to receiving a first closed-state signal or a second closed-state signal from the closed conductor; a hot-swap controller connected to the closed conductor is configured to cause the computer to power up the hot-swap device in response to receiving a first closed state signal from the closed feeder if the hot-swap device's presence signal is received from the backplane, and in response to receiving the hot-swap device's presence signal from the backplane In the case of receiving the in-position signal of the hot-swappable device from the backplane, the technical solution of receiving the second closed state signal from the closed conductor to make the computer power off the hot-swappable device can avoid the failure of the hot-swappable device. Stable connection, improve the operation stability and communication speed of computers and hot-swappable devices.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural view of a hot-swap stabilizing device provided by the present invention;

Fig. 2 is the circuit schematic diagram of the hot-swappable stabilizing device provided by the present invention;

FIG. 3 is a hot-swap device signal definition table of the hot-swap stable device provided by the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.

Based on the above purpose, the first aspect of the embodiment of the present invention proposes a hot-swap stable device that avoids the unstable connection of the hot-swap device and improves the operation stability and communication speed of the computer and the hot-swap device. Example. FIG. 1 shows a schematic structural diagram of a hot-swap stabilization device provided by the present invention.

The hot-swappable stable device package includes as shown in Figure 1:

The closed conductor is arranged on the side of the hot-swappable device, configured to conduct in response to the hot-swappable device being stably in the fully inserted state to send a first closed state signal, and in response to the hot-swappable device not being in the fully inserted state, or is about to be pulled out and cut off to signal a second closed state;

an out-of-band manager, connected to the closed conductor, configured to selectively record or update the presence status of the hot-swap device in response to receiving a first closed state signal or a second closed state signal from the closed conductor;

a hot-swap controller, connected to the closed conductor, configured to cause the computer to The hot-swap device is powered on, and the computer powers down the hot-swap device in response to receiving a second closed state signal from the closed conductor if the hot-swap device's presence signal is received from the backplane.

The devices and equipment disclosed in the examples of the present invention can be various electronic terminal equipment, such as mobile phones, personal digital assistants (PDA), tablet computers (PAD), smart TVs, etc., and can also be large terminal equipment, such as servers, etc. Therefore, the scope of protection disclosed in the embodiments of the present invention should not be limited to a specific type of device or equipment. The client disclosed in the embodiments of the present invention may be applied to any of the above-mentioned electronic terminal devices in the form of electronic hardware, computer software, or a combination of the two.

In some implementations, the closed conductor is also grounded; the closed conductor is turned on in response to the hot-swappable device being stably in a fully inserted state to send a first closed state signal comprising: the closed conductor takes a low level as the first A closed status signal is sent to the out-of-band manager and hot-swap controller.

In some implementations, the closed conductor is also grounded; the closed conductor is cut off in response to the hot-swappable device not being fully inserted or about to be pulled out to send a second closed state signal comprising: the closed conductor will A high level is sent to the out-of-band manager and hot-swap controller as a second closed state signal.

In some embodiments, the out-of-band manager is configured to periodically display the presence status to the outside world through the out-of-band channel after recording or updating the presence status of the hot-plug device.

In some implementations, the hot-swap controller is further configured to cause the computer to issue a An alert for a hot-swap device, and also causing the computer to issue an alert for a hot-swap device in response to losing a presence signal received from the backplane for the hot-swap device while receiving a first closed state signal from the closed conductor. Device alerts.

In some implementations, a hot-plug device that is stably in a fully inserted state is connected to the PCIe bus of the computer; The PCIe connection with the maximum rate and bandwidth compatible with the plug-in device.

In some embodiments, the closed conductor has a first mechanical structure that switches the on and off states; the first mechanical structure has a structure that prevents the closed conductor from being conducted when the hot-swap device is not in a fully inserted state, and /or pull out the first fool-proof structure of the hot-swap device under the condition that the closed conductor has been conducted.

In some embodiments, a second mechanical structure corresponding to the first mechanical structure is attached to the computer or the hot-swappable device, wherein the second mechanical structure has the function of preventing the hot-swappable device from being fully inserted. A second fool-proof structure for unplugging the hot-swap device when the closed conductor is turned on, and/or when the closed conductor has been conducted.

In some implementations, the presence signal of the hot-swappable device is Ifdet#; the hot-swappable device is configured to first conduct Ifdet# to the computer in response to being inserted, and to conduct the Ifdet# last in response to the hot-swappable device being pulled out. Cut Ifdet# from the computer.

The specific implementation manner of the present invention will be further described below according to the specific embodiment shown in FIG. 2 .

Referring to Fig. 2, one end of the closed conductor (shown as an external force switch, which can be realized as a pressing handle of a hot-swap device in the embodiment of the invention) is grounded, and one end is connected to the hot-swap controller (in the embodiment of the invention CPLD is used to implement complex logic programmable device) and an out-of-band manager (in the embodiment of the present invention, BMC is used to implement baseboard management controller). The hot-swap controller is set on the backplane (shown as BP in Figure 2) and connected to the presence signal of the hot-swap device (indicated by NVMe SSD in the embodiment of the present invention), and the hot-swap device passes through the backplane Connects to the computer's central processing unit (shown as CPU in Figure 2).

When inserting an NVMe disk, first manually push in the Carrier of the NVMe disk (that is, the aforementioned handle). When the Carrier is pushed into the case, the handle is still up (that is, disconnected), so the signal for detecting the closed state is still open and high, and the CPLD detects that Ifdet# (that is, the micro signal) is low Potential, but will not power up. When the handle is flattened, since the conductive copper piece inside the handle will be connected to the ground, the signal for detecting the closed state is low. At this time, the backplane CPLD will power up the NVMe disk and notify the BMC of the low potential. Change and record "The NVMe disk is in the device ready state", and activate the PICE connection.

To unplug the NVMe disk, first press the mechanism button of the NVMe disk carrier, and the handle will pop out. Since the detection of the closed state signal will become an open circuit, it will become a high potential. At this time, the BMC will be notified of this high potential change and recorded "NVMe disk is removed", and it will also be notified to the backplane CPLD. After the backplane CPLD receives it, it will send an Alert_N signal to the CPU (that is, the interrupt mechanism of hot swapping), and disable the PICE connection. The CPU then powers off the backplane CPLD through VPP (SMBUS, bus signal), and then unplugs the NVMe disk.

It can be seen from Figure 3 that the IfDet# of the standard specification of the NVMe disk is in the state of 1st Mating, which means that during normal plugging and unplugging, the in-position pin is contacted first, and other signals are contacted later, so the standard of the NVMe disk cannot be modified Specifications can only be ensured by external means to ensure that the insertion is in place.

It can be seen from the above-mentioned embodiments that the hot-swap stabilizing device provided by the embodiment of the present invention is provided on the side of the hot-swap device by using a closed conductor, and is configured to respond to the hot-swap device being stably in a fully inserted state to conduct pass to signal a first closed state, and cut off to signal a second closed state in response to a hot-swap device not being fully inserted, or about to be unplugged; an out-of-band manager, connected to the closed conductor, configured for selectively registering or updating the presence status of the hot-swap device in response to receiving a first closed-state signal or a second closed-state signal from the closed conductor; a hot-swap controller connected to the closed conductor, Configured to cause the computer to power up the hot-swap device in response to receiving a first closed state signal from the closed conductor if a hot-swap device presence signal is received from the backplane, and in response to receiving the hot-swap device presence signal from the backplane When the board receives the in-position signal of the hot-swappable device, it receives the second closed state signal from the closed conductor to make the computer power off the hot-swappable device, which can avoid the unstable connection of the hot-swappable device , Improve the operation stability and communication speed of computers and hot-swappable devices.

Based on the above purpose, the second aspect of the embodiment of the present invention proposes an embodiment of a computer that avoids the unstable connection of the hot-swap device and improves the operation stability and communication speed of the computer and the hot-swap device. Computers include:

A central processing unit connected to the PCIe bus;

the backplane that carries the hot-swappable devices and connects to the central processing unit;

A hot-swappable stable device connected to the CPU and backplane, further comprising:

The closed conductor is arranged on the side of the hot-swappable device, configured to conduct in response to the hot-swappable device being stably in the fully inserted state to send a first closed state signal, and in response to the hot-swappable device not being in the fully inserted state, or is about to be pulled out and cut off to signal a second closed state;

an out-of-band manager, connected to the closed conductor, configured to selectively record or update the presence status of the hot-swap device in response to receiving a first closed state signal or a second closed state signal from the closed conductor;

a hot-swap controller, connected to the closed conductor, configured to cause the computer to The hot-swap device is powered on, and the computer powers down the hot-swap device in response to receiving a second closed state signal from the closed conductor if the hot-swap device's presence signal is received from the backplane.

It can be seen from the above embodiments that the computer provided by the embodiment of the present invention is provided on the side of the hot-swappable device by using a closed conductor, and is configured to be turned on in response to the hot-swappable device being stably in a fully inserted state to send the first A closed state signal, and in response to the hot-swappable device is not in a fully inserted state, or will be cut off to send a second closed state signal; the out-of-band manager, connected to the closed conductor, is configured to respond to the slave The closed conductor receives the first closed state signal or the second closed state signal and selectively records or updates the presence status of the hot-swap device; the hot-swap controller, connected to the closed conductor, is configured to respond to Receiving a first closed state signal from a closed conductor to enable the computer to power up a hot-swap device in the event a presence signal of the hot-swap device is received from the backplane, and in response to receiving a thermal In the case of the in-position signal of the plug-in device, the technical solution of receiving the second closed state signal from the closed conductor to make the computer power off the hot-swap device can avoid the unstable connection of the hot-swap device, and improve the performance of the computer and the computer. Operational stability and communication speed of hot-swappable devices.

It should be pointed out that the embodiment of the above-mentioned computer adopts the embodiment of the hot-swap stabilization device to specifically illustrate the working process of each module. Those skilled in the art can easily imagine that applying these modules to the hot-swap In other embodiments of the pull-out stabilization device. Of course, since each module in the embodiment of the hot-swappable stabilization device can intersect, replace, add, or delete each other, these reasonable permutations and combinations should also belong to the protection scope of the present invention for the computer. And the scope of protection of the invention should not be limited to the examples described.

Those of ordinary skill in the art should understand that: the discussion of any of the above embodiments is exemplary only, and is not intended to imply that the scope (including claims) disclosed by the embodiments of the present invention is limited to these examples; under the idea of the embodiments of the present invention , technical features in the above embodiments or in different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as described above, which are not provided in details for the sake of brevity. Therefore, within the spirit and principle of the embodiments of the present invention, any omissions, modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the embodiments of the present invention.

Claims (10)

1. A hot plug stabilization device, comprising:

the closing conducting device is arranged on the hot plug device side and is configured to be conducted to send a first closing state signal in response to the closing conducting device closing the hot plug device to enable the hot plug device to be stably in a fully inserted state, and to be switched off to send a second closing state signal in response to the closing conducting device not closing the hot plug device to enable the hot plug device not to be in the fully inserted state or to be pulled out;

an out-of-band manager connected to the close conductor and configured to selectively document or update an in-place status of a hot plug device in response to receiving the first close status signal or the second close status signal from the close conductor;

a hot plug controller connected to the close conductor and configured to power up the computer for the hot plug device in response to receiving the first close state signal from the close conductor in an instance in which the in-place signal for the hot plug device is received from the backplane, and to power down the computer for the hot plug device in response to receiving the second close state signal from the close conductor in an instance in which the in-place signal for the hot plug device is received from the backplane.

2. The apparatus of claim 1, wherein the closed conductor is also connected to ground; the close conductor is configured to send a low level as the first close state signal to the out-of-band manager and the hot plug controller.

3. The apparatus of claim 1, wherein the closed conductor is also connected to ground; the close conductor is configured to send a high level as the second close state signal to the out-of-band manager and the hot plug controller.

4. The device of claim 1, wherein the out-of-band manager is configured to periodically display the in-place status to the outside world via an out-of-band channel after logging or updating the in-place status of a hot-plugged device.

5. The device of claim 1, wherein the hot plug controller is further configured to cause the computer to issue an alert for the hot plug device in response to receiving the first close status signal from the close conductor without receiving a live plugged device live signal from the backplane, and to cause the computer to issue an alert for the hot plug device in response to losing the live plugged device live signal received from the backplane without receiving the first close status signal from the close conductor.

6. The device of claim 1, wherein the hot-plug device is connected to a PCIe bus of the computer; the hot plug controller is configured to cause the computer to provide a PCIe connection having a maximum rate and a maximum bandwidth compatible with the hot plug device to the hot plug device in response to the hot plug device being stably in a fully inserted state.

7. The apparatus of claim 1, wherein the closed conductor has a first mechanical structure that switches on and off states; the first mechanical structure is provided with a first fool-proof structure which prevents the closing conductor from being conducted under the condition that the hot plug device is not in a full insertion state and/or prevents the hot plug device from being pulled out under the condition that the closing conductor is conducted.

8. The device according to claim 7, wherein a second mechanical structure corresponding to the first mechanical structure is further attached to the computer or the hot swap device, wherein the second mechanical structure has a second fool-proofing structure preventing the closing conductor from being conducted if the hot swap device is not in a fully plugged-in state and/or preventing the hot swap device from being unplugged if the closing conductor is already conducted.

9. The device of claim 1, wherein the in-place signal for a hot-plugged device is Ifdet #; the hot-plugged device is configured to first turn Ifdet # on to the computer in response to being plugged in, while finally turning Ifdet # off from the computer in response to the hot-plugged device being unplugged.

10. A computer, comprising:

a central processor connected to a PCIe bus;

a backplane carrying connectors of hot-pluggable devices and connected to the central processor;

a hot plug stabilization device connected to the central processor and the backplane, further comprising:

the closing conduction device is arranged on the hot plug device side and is configured to respond to the closing conduction device closing the hot plug device so as to enable the hot plug device to be stably in a fully inserted state and conduct to send out a first closing state signal, and respond to the closing conduction device not closing the hot plug device so as to enable the hot plug device not to be in the fully inserted state or to be pulled out and cut off to send out a second closing state signal;

an out-of-band manager connected to the close conductor and configured to selectively document or update an in-place status of a hot plug device in response to receiving the first close status signal or the second close status signal from the close conductor;

a hot plug controller connected to the close conductor and configured to power up the computer for the hot plug device in response to receiving the first close state signal from the close conductor in an instance in which the in-place signal for the hot plug device is received from the backplane, and to power down the computer for the hot plug device in response to receiving the second close state signal from the close conductor in an instance in which the in-place signal for the hot plug device is received from the backplane.

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