CN113448904B - Hot plug method and device of external equipment - Google Patents
Hot plug method and device of external equipment Download PDFInfo
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- CN113448904B CN113448904B CN202110626968.5A CN202110626968A CN113448904B CN 113448904 B CN113448904 B CN 113448904B CN 202110626968 A CN202110626968 A CN 202110626968A CN 113448904 B CN113448904 B CN 113448904B
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- hot plug
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- external device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4081—Live connection to bus, e.g. hot-plugging
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
Abstract
The invention discloses a hot plug method and a hot plug device of external equipment, wherein the method comprises the following steps: sending a hot plug signal to the central processing unit through the hot plug controller, enabling a power supply enabling signal by the central processing unit and adjusting the state indicator to be in a transition state through the hot plug controller; powering on the external equipment by using a power supply enabling signal based on an external equipment protocol, and enabling the central processing unit to be in communication connection with the external equipment on a bus and adjusting a state indicator to be in a connection state through a hot plug controller; sending a hot plug signal to the central processing unit through the hot plug controller, stopping a power supply enabling signal by the central processing unit and adjusting the state indicator to be in a transition state through the hot plug controller; powering down the external device using the power enable signal, disconnecting communications with the external device over the bus by the central processor and adjusting the status indicator to a disconnected state by the hot-plug controller after a time delay of a predetermined length. The invention can improve the hot plug stability and convenience of the OCP card.
Description
Technical Field
The present invention relates to the field of hot plug, and more particularly, to a hot plug method and apparatus for an external device.
Background
At present, the competition of the server industry is intensified, but the server itself has reached the technical bottleneck, and the bright spots and advantages of products can not be improved. Based on this, peripheral devices of the server are continuously emerging to complete flexible configuration and implement different functions, and the server itself also needs to add part of hardware lines and functions to support the peripheral devices.
OCP (open computing project) cards have been widely used in the prior art, the standardization and modularization design thereof increases the universality thereof, and the hot plug mechanism thereof further increases the usability thereof, so that the OCP cards have become the standard configuration of servers, but the OCP hot plug in the prior art still has problems. Firstly, for Windows system, when the server is started, no matter the OCP card is in place or not, the CPU (central processing unit) can send out CPU Power EN signal, at this moment, the OCP card is inserted, and under the system interface, the OCP card can not be identified normally. Secondly, after the LED (diode) lamp is observed to be turned off, when the OCP hot-plug action is executed, the problems of Linux system breakdown and Windows system blue screen are problematically caused, the reason is that although the LED is turned off, the main line communication between the CPU and the OCP card has problematically delayed disconnection, and at the moment, the OCP card is forcibly pulled out, so that the problems are inevitably caused. Finally, after the system is powered on again, if the OCP card is powered on in place by default, if the OCP card does not work temporarily in the previous use setting, hot plug operation needs to be carried out on the OCP card of each machine again, and customer experience is seriously influenced.
Aiming at the problems of automatic start-up identification of an OCP card hot plug mechanism, system breakdown caused by hot plug and the like in the prior art, no effective solution is available at present.
Disclosure of Invention
In view of this, an embodiment of the present invention provides a method and an apparatus for hot plugging an external device, which can solve the problems of automatic boot identification and system crash caused by a hot plugging mechanism of an OCP card, and improve the hot plugging stability and convenience of the OCP card.
Based on the above object, a first aspect of the embodiments of the present invention provides a hot plug method for an external device, including the following steps:
in response to the status indicator being in the off state and triggering the notifier, sending a hot plug signal to the central processor through the hot plug controller, enabling a power enable signal by the central processor and adjusting the status indicator to a transitional state through the hot plug controller;
in response to the hot plug controller detecting that the external device is in place and the power enable signal is enabled, powering up the external device using the power enable signal based on the external device protocol, communicatively connecting, by the central processor, the external device over the bus and adjusting, by the hot plug controller, the status indicator to a connected state;
sending a hot plug signal to the central processor through the hot plug controller in response to the status indicator being in the connected state and triggering the notifier, deactivating the power supply enable signal by the central processor and adjusting the status indicator to the transitional state through the hot plug controller;
powering down the external device using the power enable signal in response to the hot swap controller detecting that the external device is in place and the power enable signal is disabled, disconnecting communications with the external device over the bus by the central processor and adjusting the status indicator to a disconnected state by the hot swap controller after a time delay of a predetermined length.
In some embodiments, the notifier is connected to the hot plug controller and configured to send a hot plug signal to the hot plug controller in response to being triggered.
In some embodiments, the method further comprises performing the steps of:
and in response to the central processor sending a power enable signal and a power activation signal adjusting the status indicator to the transition state when the central processor is powered on, and the hot plug controller detecting that the external device is not in place, the power activation signal sent by the central processor is masked by the hot plug controller to not enable the power enable signal and not adjust the status indicator to the transition state.
In some embodiments, the method further comprises performing the steps of: while the power-on activation signal is masked by the hot plug controller, a hot plug signal is also generated by the hot plug controller and sent to the central processor to disable the power supply enable signal by the central processor.
In some embodiments, the method further comprises performing the steps of:
and releasing the signal shielding aiming at the central processing unit in response to the fact that the hot plug controller detects that the external equipment is in place after the power-on activating signal is shielded.
In some embodiments, sending, by the hot plug controller, a hot plug signal to the central processor in response to the status indicator being in the off state and the notifier being triggered comprises: the hot plug controller sends a hot plug signal to the central processor in response to detecting that the status indicator is in the off state and receiving the hot plug signal from the notifier;
sending a hot plug signal to the central processor by the hot plug controller in response to the status indicator being in the connected state and the notifier being triggered comprises: the hot plug controller sends a hot plug signal to the central processor in response to detecting that the status indicator is in the connected state and receiving a hot plug signal from the notifier.
In some embodiments, the method further comprises performing the steps of:
and in response to the central processing unit powering off, recognizing and storing the working state of the external device to the hot plug controller by the hot plug controller.
In some embodiments, the method further comprises performing the steps of:
in response to the central processing unit being powered up again and the working state of the external device stored in the hot plug controller being working, allowing the external device to be powered up by the hot plug controller by issuing a power supply enabling enable signal and a power on activation signal that adjusts the status indicator to a transitional state by the central processing unit;
in response to the central processor being powered back on and the operating state of the external device stored in the hot plug controller being inactive, the power-on activation signal issued by the central processor is masked by the hot plug controller to not enable the power enable signal and not adjust the status indicator to the transitional state.
In some embodiments, the method further comprises performing the steps of: while the power-on activation signal is masked by the hot plug controller, a hot plug signal is also generated by the hot plug controller and sent to the central processor to disable the power supply enable signal by the central processor.
A second aspect of an embodiment of the present invention provides an apparatus, including:
a processor;
a hot plug controller; and
a memory storing executable program code;
wherein, the processor and the hot plug controller execute the following steps when running the corresponding program codes in the memory:
sending a hot plug signal to the central processor through the hot plug controller in response to the status indicator being in the off state and triggering the notifier, enabling a power enable signal by the central processor and adjusting the status indicator to the transition state through the hot plug controller;
in response to the hot plug controller detecting that the external device is in place and the power enable signal is enabled, powering up the external device using the power enable signal based on the external device protocol, communicatively connecting, by the central processor, the external device on the bus and adjusting, by the hot plug controller, the status indicator to a connected state;
sending a hot plug signal to the central processor through the hot plug controller in response to the status indicator being in the connected state and triggering the notifier, disabling the power enable signal by the central processor and adjusting the status indicator to a transitional state through the hot plug controller;
powering down the external device using the power enable signal in response to the hot swap controller detecting that the external device is in place and the power enable signal is disabled, disconnecting communications with the external device over the bus by the central processor and adjusting the status indicator to a disconnected state by the hot swap controller after a time delay of a predetermined length.
In some implementations, the notifier is connected to the hot plug controller and sends a hot plug signal to the hot plug controller in response to being triggered.
In some embodiments, the steps further comprise:
and in response to the central processor sending a power enable signal and a power activation signal adjusting the status indicator to the transition state when the central processor is powered on, and the hot plug controller detecting that the external device is not in place, the power activation signal sent by the central processor is masked by the hot plug controller to not enable the power enable signal and not adjust the status indicator to the transition state.
In some embodiments, the steps further comprise: while the power-on activation signal is masked by the hot plug controller, a hot plug signal is also generated by the hot plug controller and sent to the central processor to disable the power supply enable signal by the central processor.
In some embodiments, the steps further comprise:
and releasing the signal shielding aiming at the central processing unit in response to the hot plug controller detecting that the external equipment is in place after shielding the starting-up activating signal.
In some embodiments, sending, by the hot plug controller, a hot plug signal to the central processor in response to the status indicator being in the off state and the notifier being triggered comprises: the hot plug controller sends a hot plug signal to the central processor in response to detecting that the status indicator is in the off state and receiving the hot plug signal from the notifier;
sending a hot plug signal to the central processor via the hot plug controller in response to the status indicator being in the connected state and the notifier being triggered comprises: the hot plug controller sends a hot plug signal to the central processor in response to detecting that the status indicator is in the connected state and receiving a hot plug signal from the notifier.
In some embodiments, the steps further comprise:
and in response to the central processing unit powering off, recognizing and storing the working state of the external device to the hot plug controller by the hot plug controller.
In some embodiments, the steps further comprise:
in response to the central processing unit being powered up again and the working state of the external device stored in the hot plug controller being working, allowing the external device to be powered up by the hot plug controller by issuing a power supply enabling enable signal and a power on activation signal that adjusts the status indicator to a transitional state by the central processing unit;
in response to the central processor being powered back on and the operating state of the external device stored in the hot plug controller being inactive, the power-on activation signal issued by the central processor is masked by the hot plug controller to not enable the power enable signal and not adjust the status indicator to the transitional state.
In some embodiments, the steps further comprise: while the power-on activation signal is masked by the hot plug controller, a hot plug signal is also generated by the hot plug controller and sent to the central processor to disable the power supply enable signal by the central processor.
The invention has the following beneficial technical effects: according to the hot plug method and the hot plug device of the external device, the state indicator is in the off state and the notifier is triggered in response, the hot plug controller sends the hot plug signal to the central processing unit, the central processing unit starts the power supply enabling signal, and the state indicator is adjusted to the transition state through the hot plug controller; in response to the hot plug controller detecting that the external device is in place and the power enable signal is enabled, powering up the external device using the power enable signal based on the external device protocol, communicatively connecting, by the central processor, the external device over the bus and adjusting, by the hot plug controller, the status indicator to a connected state; sending a hot plug signal to the central processor through the hot plug controller in response to the status indicator being in the connected state and triggering the notifier, deactivating the power supply enable signal by the central processor and adjusting the status indicator to the transitional state through the hot plug controller; the technical scheme that the external equipment is powered off by using the power supply enabling signal in response to the fact that the hot plug controller detects that the external equipment is in place and the power supply enabling signal is disabled, the central processing unit is disconnected from the external equipment in communication on the bus, and the state indicator is adjusted to the disconnected state through the hot plug controller after a time delay of a preset length can solve the problems of automatic power-on identification and system breakdown caused by a hot plug mechanism of the OCP card, and hot plug stability and convenience of the OCP card are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow diagram illustrating a hot plug method of an external device according to the present invention;
fig. 2 is a schematic structural diagram of a hot plug method of an external device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail 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 used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are only used for convenience of expression and should not be construed as a limitation to the embodiments of the present invention, and no description is given in the following embodiments.
Based on the above object, a first aspect of the embodiments of the present invention provides an embodiment of a hot plug method for an external device, which solves the problems of automatic power-on identification and system crash caused by a hot plug mechanism of an OCP card, and improves hot plug stability and convenience of the OCP card. Fig. 1 is a schematic flowchart illustrating a hot plug method of an external device according to the present invention.
The hot plug method of the external device, as shown in fig. 1, includes the following steps:
step S101, responding to the state indicator being in a disconnection state and triggering the notifier, sending a hot plug signal to the central processing unit through the hot plug controller, enabling a power supply enabling signal by the central processing unit and adjusting the state indicator to a transition state through the hot plug controller;
step S103, in response to the hot plug controller detecting that the external device is in place and the power supply enabling signal is enabled, the external device is powered on by using the power supply enabling signal based on the external device protocol, the central processing unit is in communication connection with the external device on the bus, and the status indicator is adjusted to a connection status through the hot plug controller;
step S105, responding to the state indicator being in a connection state and triggering the notifier, sending a hot plug signal to the central processor through the hot plug controller, deactivating a power supply enabling signal by the central processor and adjusting the state indicator to a transition state through the hot plug controller;
and S107, in response to the hot plug controller detecting that the external device is in place and the power supply enabling signal is disabled, powering down the external device by using the power supply enabling signal, disconnecting the communication with the external device on the bus by the central processing unit, and adjusting the status indicator to a disconnected state by the hot plug controller after a time delay of a preset length.
In the embodiment of the invention, a CPLD (complex programmable logic device) is used as a hot plug controller to identify the state of the annunciator and send the state to a CPU (central processing unit) through an I2C (internal integrated circuit bus), and the I2C of the CPU is analyzed to identify a Power EN signal sent by the CPU, so that the Power-on and Power-off of the OCP card are operated, and the state of an LED (light-emitting diode) is controlled. In addition, the UFM (user flash memory, integrated storage area in CPLD) inside the CPLD can record the working state of the OCP card when the system is powered off, and after the system is powered on again, control the OCP card to recover to the last working state, and the customer resets the working state of the OCP card through the notifier, thereby greatly increasing the customer experience.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like. Embodiments of the computer program may achieve the same or similar effects as any of the preceding method embodiments to which it corresponds.
In some implementations, the notifier is connected to the hot plug controller and configured to send a hot plug signal to the hot plug controller in response to being triggered.
In some embodiments, the method further comprises performing the steps of:
and in response to the central processor sending a power enable signal and a power activation signal adjusting the status indicator to the transition state when the central processor is powered on, and the hot plug controller detecting that the external device is not in place, the power activation signal sent by the central processor is masked by the hot plug controller to not enable the power enable signal and not adjust the status indicator to the transition state.
In some embodiments, the method further comprises performing the steps of: while the power-on activation signal is masked by the hot plug controller, a hot plug signal is also generated by the hot plug controller and sent to the central processor to disable the power supply enable signal by the central processor.
In some embodiments, the method further comprises performing the steps of:
and releasing the signal shielding aiming at the central processing unit in response to the fact that the hot plug controller detects that the external equipment is in place after the power-on activating signal is shielded.
In some embodiments, sending, by the hot plug controller, a hot plug signal to the central processor in response to the status indicator being in the off state and the notifier being triggered comprises: the hot plug controller sends a hot plug signal to the central processor in response to detecting that the status indicator is in the off state and receiving the hot plug signal from the notifier;
sending a hot plug signal to the central processor by the hot plug controller in response to the status indicator being in the connected state and the notifier being triggered comprises: the hot plug controller sends a hot plug signal to the central processor in response to detecting that the status indicator is in the connected state and receiving a hot plug signal from the notifier.
In some embodiments, the method further comprises performing the steps of:
and responding to the power-off of the central processor, and recognizing and storing the working state of the external device to the hot plug controller by the hot plug controller.
In some embodiments, the method further comprises performing the steps of:
in response to the central processing unit being powered up again and the working state of the external device stored in the hot plug controller being working, allowing the external device to be powered up by the hot plug controller by issuing a power supply enabling enable signal and a power on activation signal that adjusts the status indicator to a transitional state by the central processing unit;
in response to the central processor being powered back up and the operating state of the external device stored in the hot plug controller being inactive, the power on activation signal issued by the central processor is masked by the hot plug controller to not enable the power enable signal and not adjust the status indicator to the transitional state.
In some embodiments, the method further comprises performing the steps of: while the power-on activation signal is masked by the hot plug controller, a hot plug signal is also generated and sent by the hot plug controller to the central processor to disable the central processor from the power supply enable signal.
The following further illustrates embodiments of the invention in accordance with the specific example shown in fig. 2.
Referring to fig. 2, the embodiment of the present invention uses a CPLD as a hot plug controller, uses a button as an annunciator to issue a hot plug instruction of a user to the CPLD, and uses an LED as a status indicator to display the operating status of the OCP card. GPIO (general purpose input output bus) shown inside the CPLD is a bus used for connection of buttons and LEDs, and I2C connection is used between the CPLD and the CPU.
The CPLD of the embodiment of the invention simulates the function of an IO Expander chip used in the prior art in the CPLD, can send the Button state to the CPU, and can analyze the I2C to obtain the CPU Power EN signal and the LED state.
For the Windows system, if the OCP card is not in place when the server is started and the CPU sends out a CPU Power EN signal and an LED signal, the CPLD can shield, the OCP card cannot be electrified, and the LED lamp cannot be lightened. Meanwhile, the CPLD can simulate a Hotplug signal in the I2C sent to the CPU, and informs the CPU to control the CPU Power EN signal to become invalid; and then after the OCP card is inserted, the CPLD does not shield signals any more, and the normal hot insertion operation of the OCP card can be completed through Button.
The LED lamp provided by the embodiment of the invention can be in three states: and the indicator is extinguished, flickered and pulled out and is in a disconnected state, a transitional state and a connected state respectively.
When OCP hot-plug action is executed, the CPLD can identify the state of the LED emitted by the CPU, and after the LED state flicker emitted by the CPU stops, the CPLD can delay the flicker time (for example, 10 seconds) on the basis, and then control the LED to be turned off. At this time, the CPU and the main line communication of the OCP are completely terminated, and the OCP card is pulled out. A sufficient delay may prevent corrupting the main line communication of the CPU and OCP.
When the system is powered off, the CPLD can identify the state of the OCP card and store the OCP card into the UFM. "0" indicates that the OCP card is powered off, and "1" indicates that the OCP card is powered on. After the system is powered on again, the CPLD reads the data in the UFM, if the data is '1', the CPLD can normally identify the control signal of the CPU, and thus the OCP card is powered on normally; if the signal is '0', the CPLD shields the CPU Power EN signal and the LED signal, and simultaneously simulates a Hotplug signal to inform the CPU to control the CPU Power EN signal to be invalid, thereby ensuring that the OCP card is in a non-working state.
As can be seen from the foregoing embodiments, in the hot plug method of an external device according to an embodiment of the present invention, by responding to the status indicator being in the off state and triggering the notifier, a hot plug signal is sent to the central processing unit through the hot plug controller, the central processing unit enables the power supply enable signal, and the status indicator is adjusted to the transition state through the hot plug controller; in response to the hot plug controller detecting that the external device is in place and the power enable signal is enabled, powering up the external device using the power enable signal based on the external device protocol, communicatively connecting, by the central processor, the external device over the bus and adjusting, by the hot plug controller, the status indicator to a connected state; sending a hot plug signal to the central processor through the hot plug controller in response to the status indicator being in the connected state and triggering the notifier, disabling the power enable signal by the central processor and adjusting the status indicator to a transitional state through the hot plug controller; the technical scheme that the external equipment is powered off by using the power supply enabling signal in response to the fact that the hot plug controller detects that the external equipment is in place and the power supply enabling signal is disabled, the central processing unit is disconnected from the external equipment in communication on the bus, and the state indicator is adjusted to the disconnected state through the hot plug controller after a time delay of a preset length can solve the problems of automatic power-on identification and system breakdown caused by a hot plug mechanism of the OCP card, and hot plug stability and convenience of the OCP card are improved.
It should be particularly noted that, the steps in the embodiments of the hot plug method for an external device described above may be intersected, replaced, added, or deleted, and therefore, the hot plug method for an external device that is transformed by these reasonable permutations and combinations shall also belong to the scope of the present invention, and shall not limit the scope of the present invention to the described embodiments.
Based on the above object, a second aspect of the embodiments of the present invention provides an embodiment of a hot plug apparatus for an external device, which solves the problems of automatic boot identification and system crash caused by a hot plug mechanism of an OCP card, and improves hot plug stability and convenience of the OCP card. The device comprises:
a processor;
a hot plug controller; and
a memory storing executable program code;
the processor and the hot plug controller execute the following steps when running corresponding program codes in the memory:
sending a hot plug signal to the central processor through the hot plug controller in response to the status indicator being in the off state and triggering the notifier, enabling a power enable signal by the central processor and adjusting the status indicator to the transition state through the hot plug controller;
in response to the hot plug controller detecting that the external device is in place and the power enable signal is enabled, powering up the external device using the power enable signal based on the external device protocol, communicatively connecting, by the central processor, the external device over the bus and adjusting, by the hot plug controller, the status indicator to a connected state;
sending a hot plug signal to the central processor through the hot plug controller in response to the status indicator being in the connected state and triggering the notifier, disabling the power enable signal by the central processor and adjusting the status indicator to a transitional state through the hot plug controller;
powering down the external device using the power enable signal in response to the hot swap controller detecting that the external device is in place and the power enable signal is disabled, disconnecting communications with the external device over the bus by the central processor and adjusting the status indicator to a disconnected state by the hot swap controller after a time delay of a predetermined length.
In some embodiments, the notifier is connected to the hot plug controller and configured to send a hot plug signal to the hot plug controller in response to being triggered.
In some embodiments, the steps further comprise:
and in response to the central processor sending a power enable signal and a power activation signal adjusting the status indicator to the transition state when the central processor is powered on, and the hot plug controller detecting that the external device is not in place, the power activation signal sent by the central processor is masked by the hot plug controller to not enable the power enable signal and not adjust the status indicator to the transition state.
In some embodiments, a hot plug signal is generated and sent by the hot plug controller to the central processor to disable the power enable signal while the power activation signal is masked by the hot plug controller.
In some embodiments, the steps further comprise:
and releasing the signal shielding aiming at the central processing unit in response to the hot plug controller detecting that the external equipment is in place after shielding the starting-up activating signal.
In some embodiments, sending, by the hot plug controller, a hot plug signal to the central processor in response to the status indicator being in the off state and the notifier being triggered comprises: the hot plug controller sends a hot plug signal to the central processor in response to detecting that the status indicator is in the off state and receiving the hot plug signal from the notifier;
sending a hot plug signal to the central processor via the hot plug controller in response to the status indicator being in the connected state and the notifier being triggered comprises: the hot plug controller sends a hot plug signal to the central processor in response to detecting that the status indicator is in the connected state and receiving a hot plug signal from the notifier.
In some embodiments, the steps further comprise:
and responding to the power-off of the central processor, and recognizing and storing the working state of the external device to the hot plug controller by the hot plug controller.
In some embodiments, the steps further comprise:
in response to the central processing unit being powered up again and the working state of the external device stored in the hot plug controller being working, allowing the external device to be powered up by the hot plug controller issuing a power enable signal and a power on activation signal that adjusts the state indicator to a transitional state;
in response to the central processor being powered back on and the operating state of the external device stored in the hot plug controller being inactive, the power-on activation signal issued by the central processor is masked by the hot plug controller to not enable the power enable signal and not adjust the status indicator to the transitional state.
In some embodiments, the steps further comprise: while the power-on activation signal is masked by the hot plug controller, a hot plug signal is also generated by the hot plug controller and sent to the central processor to disable the power supply enable signal by the central processor.
The devices and apparatuses disclosed in the embodiments of the present invention may be various electronic terminal apparatuses, such as a mobile phone, a Personal Digital Assistant (PDA), a tablet computer (PAD), a smart television, or a large terminal apparatus, such as a server, and therefore the scope of protection disclosed in the embodiments of the present invention should not be limited to a specific type of device and apparatus. The client disclosed in the embodiment of the present invention may be applied to any one of the above electronic terminal devices in the form of electronic hardware, computer software, or a combination of both.
As can be seen from the foregoing embodiments, in the hot plug apparatus of an external device according to an embodiment of the present invention, by responding to the status indicator being in the off state and triggering the notifier, a hot plug signal is sent to the central processing unit through the hot plug controller, the central processing unit enables the power supply enable signal, and the status indicator is adjusted to the transition state through the hot plug controller; in response to the hot plug controller detecting that the external device is in place and the power enable signal is enabled, powering up the external device using the power enable signal based on the external device protocol, communicatively connecting, by the central processor, the external device over the bus and adjusting, by the hot plug controller, the status indicator to a connected state; sending a hot plug signal to the central processor through the hot plug controller in response to the status indicator being in the connected state and triggering the notifier, disabling the power enable signal by the central processor and adjusting the status indicator to a transitional state through the hot plug controller; the technical scheme that the external equipment is powered off by using the power supply enabling signal in response to the fact that the hot plug controller detects that the external equipment is in place and the power supply enabling signal is disabled, the central processing unit is disconnected from the external equipment in communication on the bus, and the state indicator is adjusted to the disconnected state through the hot plug controller after a time delay of a preset length can solve the problems of automatic power-on identification and system breakdown caused by a hot plug mechanism of the OCP card, and hot plug stability and convenience of the OCP card are improved.
It should be particularly noted that the above-mentioned embodiment of the apparatus adopts an embodiment of the hot plug method of the external device to specifically describe the working process of each module, and those skilled in the art can easily think that these modules are applied to other embodiments of the hot plug method of the external device. Of course, since the steps in the hot plug method embodiment of the external device may be intersected, replaced, added, or deleted, these reasonable permutation, combination and transformation should also belong to the scope of the present invention, and the scope of the present invention should not be limited to the embodiments.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant only to be exemplary, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of an embodiment of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (8)
1. A hot plug method of an external device is characterized by comprising the following steps:
sending, by a hot plug controller, a hot plug signal to a central processor in response to a status indicator being in an off state and triggering a notifier, enabling, by the central processor, a power enable signal and adjusting, by the hot plug controller, the status indicator to a transitional state;
in response to the hot plug controller detecting that an external device is in place and the power enable signal is enabled, powering up the external device using the power enable signal based on an external device protocol, communicatively connecting, by the central processor, the external device on the bus and adjusting, by the hot plug controller, the status indicator to a connected state;
sending a hot plug signal to a central processor through the hot plug controller in response to a status indicator being in a connected state and triggering a notifier, deactivating the power supply enable signal by the central processor and adjusting the status indicator to a transitional state through the hot plug controller;
powering down the external device using the power enable signal in response to the hot plug controller detecting that the external device is in place and the power enable signal is disabled, by the central processor disconnecting communication with the external device over the bus and adjusting the status indicator to an off state by the hot plug controller after a time delay of a predetermined length;
wherein the notifier is connected to the hot plug controller and configured to send a hot plug signal to the hot plug controller in response to being triggered;
in response to the central processor issuing a power enable signal and a power activation signal that adjusts the status indicator to a transitional state when powered up and the hot plug controller detecting that an external device is not present, the power activation signal issued by the central processor is masked by the hot plug controller to not enable the power enable signal and not adjust the status indicator to a transitional state.
2. The method of claim 1, further comprising performing the steps of:
and when the hot plug controller shields the starting-up activation signal, the hot plug controller generates and sends the hot plug signal to the central processing unit so as to enable the central processing unit to stop the power supply enabling signal.
3. The method of claim 1, further comprising performing the steps of:
and in response to the hot plug controller detecting that the external device is in place after the start-up activation signal is shielded, the signal shielding for the central processing unit is released.
4. The method of claim 1, wherein sending a hot plug signal to the central processor via the hot plug controller in response to the status indicator being in the off state and triggering the notifier comprises: the hot plug controller sending the hot plug signal to the central processor in response to detecting that the status indicator is in an off state and receiving the hot plug signal from the notifier;
sending a hot plug signal to a central processor by the hot plug controller in response to the status indicator being in a connected state and the notifier being triggered comprises: the hot plug controller sends the hot plug signal to the central processor in response to detecting that the status indicator is in a connected state and receiving the hot plug signal from the notifier.
5. The method of claim 1, further comprising performing the steps of:
and responding to the power-off of the central processor, and recognizing and storing the working state of the external device to the hot plug controller by the hot plug controller.
6. The method of claim 5, further comprising performing the steps of:
in response to the central processor being powered back on and the operating state of the external device stored in the hot plug controller being operational, allowing, by the hot plug controller, the external device to be powered on by the central processor issuing a power enable signal and a power on activation signal that adjusts the status indicator to a transitional state;
in response to the central processor being powered back on and the operational state of the external device stored in the hot plug controller being inactive, masking, by the hot plug controller, the power-on activation signal issued by the central processor to not enable a power supply enable signal and not adjust the status indicator to a transitional state.
7. The method of claim 6, further comprising performing the steps of:
and when the hot plug controller shields the starting-up activation signal, the hot plug controller generates and sends the hot plug signal to the central processing unit so as to enable the central processing unit to stop the power supply enabling signal.
8. The utility model provides a hot plug device of external device which characterized in that includes:
a processor;
a hot plug controller; and
a memory storing executable program code;
wherein the processor and the hot plug controller execute the following steps when running the corresponding program code in the memory:
sending a hot plug signal to a central processor through a hot plug controller in response to a status indicator being in an off state and triggering a notifier, enabling a power enable signal by the central processor and adjusting the status indicator to a transitional state through the hot plug controller;
in response to the hot plug controller detecting that an external device is in place and the power enable signal is enabled, powering up the external device using the power enable signal based on an external device protocol, communicatively connecting, by the central processor, the external device over the bus and adjusting, by the hot plug controller, the status indicator to a connected state;
sending a hot plug signal to a central processor through the hot plug controller in response to a status indicator being in a connected state and triggering a notifier, deactivating the power supply enable signal by the central processor and adjusting the status indicator to a transitional state through the hot plug controller;
powering down the external device using the power enable signal in response to the hot plug controller detecting that the external device is in place and the power enable signal is disabled, by the central processor disconnecting communication with the external device over the bus and adjusting the status indicator to an off state by the hot plug controller after a time delay of a predetermined length;
wherein the notifier is connected to the hot plug controller and configured to send a hot plug signal to the hot plug controller in response to being triggered;
in response to the central processor issuing a power enable signal and a power activation signal that adjusts the status indicator to a transitional state when powered up and the hot plug controller detecting that an external device is not present, the power activation signal issued by the central processor is masked by the hot plug controller to not enable the power enable signal and not adjust the status indicator to a transitional state.
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| CN107168835A (en) * | 2017-05-12 | 2017-09-15 | 郑州云海信息技术有限公司 | The device and method of testing of a kind of automatic test warm connection function |
| CN107992443A (en) * | 2017-12-22 | 2018-05-04 | 郑州云海信息技术有限公司 | A kind of PCIE hot plug system and methods realized using CPLD |
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| CN111400217B (en) * | 2020-02-29 | 2021-10-08 | 苏州浪潮智能科技有限公司 | OCP adapter card and computer equipment |
| CN112463684A (en) * | 2020-11-19 | 2021-03-09 | 苏州浪潮智能科技有限公司 | Multi-system OCP switching system and OCP device hot plug method |
| CN112463689B (en) * | 2020-11-30 | 2022-11-29 | 苏州浪潮智能科技有限公司 | OCP card hot plug device, method and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107168835A (en) * | 2017-05-12 | 2017-09-15 | 郑州云海信息技术有限公司 | The device and method of testing of a kind of automatic test warm connection function |
| CN107992443A (en) * | 2017-12-22 | 2018-05-04 | 郑州云海信息技术有限公司 | A kind of PCIE hot plug system and methods realized using CPLD |
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