CN111258661A - RAID card drive design method based on UEFI SCSI - Google Patents
RAID card drive design method based on UEFI SCSI Download PDFInfo
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- CN111258661A CN111258661A CN202010030041.0A CN202010030041A CN111258661A CN 111258661 A CN111258661 A CN 111258661A CN 202010030041 A CN202010030041 A CN 202010030041A CN 111258661 A CN111258661 A CN 111258661A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4411—Configuring for operating with peripheral devices; Loading of device drivers
Abstract
The invention discloses a RAID card drive design method based on UEFI SCSI, and belongs to the technical field of RAID cards. The design method of the RAID card drive based on UEFI SCSI comprises a hardware abstraction layer, a protocol layer and a core layer, wherein a hardware card drive is arranged in the hardware abstraction layer and used for initializing and driving the RAID card to work; the protocol layer comprises a host driver and a bus driver; the core layer comprises a starting service and a runtime service, and the hardware abstraction layer and the protocol layer provide services for the core layer. The RAID card drive design method based on UEFI SCSI can realize the support of UEFI BIOS on the RAID card, greatly expands the application range of UEFI BIOS, and has good popularization and application values.
Description
Technical Field
The invention relates to the technical field of RAID cards, and particularly provides a RAID card drive design method based on UEFI SCSI.
Background
The RAID card can fully exert the added advantages of a plurality of hard disks in the aspect of data storage, can provide functions such as online capacity expansion, dynamic modification of array level, automatic data recovery, drive roaming, and cache, and is excellent in the aspects of improving the performance of the hard disks, data security, reliability, availability, and manageability, and thus has been increasingly widely applied to high-performance servers and storage systems.
The BIOS plays a vital role in a computer system as a key component connecting hardware and software. The UEFI BIOS has the advantages of high development efficiency, strong expansibility, superior performance and the like, so the UEFI BIOS gradually replaces the legacy BIOS.
However, because UEFI BIOS cannot support RAID cards, the application in server products is very limited.
Disclosure of Invention
The technical task of the invention is to provide a RAID card drive design method based on UEFI SCSI, which can realize the support of UEFI BIOS to RAID card and greatly expand the application range of UEFI BIOS.
In order to achieve the purpose, the invention provides the following technical scheme:
a design method of RAID card drive based on UEFI SCSI is provided with a hardware abstraction layer, a protocol layer and a core layer, wherein a hardware card drive is arranged in the hardware abstraction layer and used for initializing and driving the RAID card to work; the protocol layer comprises a host driver and a bus driver; the core layer comprises a starting service and a runtime service, and the hardware abstraction layer and the protocol layer provide services for the core layer.
The bus drive is realized by adopting the existing UEFI BIOS, and the host drive and the RAID card drive are related to hardware and need to be designed and realized by self. The RAID card drive is divided into a RAID card drive framework and a RAID card drive service. The RAID card drive frame comprises three parts of Start, Stop and Supported, wherein the Start is used for allocating resources and initializing the RAID card, the Stop is used for releasing the resources allocated in the Start and stopping the equipment, and the Supported is used for checking whether the RAID card is Supported by the drive. The RAID card driving service defines a universal service template, which comprises a group of service interfaces for operating the hardware equipment at the bottom layer and is provided for the bus service layer at the upper layer. The design of a host machine driving of the RAID card is realized based on a UEFI SCSI Pass Thru protocol, wherein a PassThru function is directly related to specific hardware, and the main function is to construct and send SCSI commands to the RAID card.
Preferably, the hardware abstraction layer further includes a processor driver module, a chipset driver module and a peripheral driver module of the UEFI BIOS.
Preferably, the host driver is an example of UEFI SCSI host protocol defined by UEFI specification, and is used to implement UEFI BIOS management on a specific SCSI host controller.
Preferably, the bus driver obtains the response from the underlying RAID card from the host driver and provides it up to the SCSI disk. The SCSI disk drive further provides services to upper layer drives (e.g., file systems) to convert upper layer IO requests into SCSI requests, thereby implementing IO request processing applied from the upper layer to the underlying RAID cards.
Preferably, the host driver analyzes the command packet issued by the bus driver, transmits the analyzed command to the RAID card, and stores the response result of the RAID card to the SCSI command.
Preferably, the protocol layer further comprises an ISA bus protocol, a PCI bus protocol and a USB bus protocol, a network protocol stack module and a file system module.
In addition, the protocol layer is also provided with a virtual disk drive and a block protocol.
Preferably, the core layer provides an interface for user space to access the kernel space.
Preferably, the boot service provides UEFI event management service, memory management service, Protocol management service, driver management service, and Image management service.
Preferably, the runtime service is configured to continue to provide read-write system time and read-write UEFI system variable services for the OS loader and the OS after the start service is ended.
Compared with the prior art, the UEFI SCSI based RAID card drive design method has the following outstanding beneficial effects: the RAID card drive design method based on UEFI SCSI realizes the support of UEFI BIOS on the RAID card, greatly expands the application range of UEFI BIOS, and has good popularization and application values.
Drawings
FIG. 1 is a RAID card drive architecture diagram designed by the UEFI SCSI based RAID card drive design method of the present invention.
Detailed Description
The UEFI SCSI-based RAID card drive design method and the design method thereof according to the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
Examples
As shown in fig. 1, the UEFI SCSI-based RAID card drive design method of the present invention is provided with a hardware abstraction layer, a protocol layer, and a core layer.
And a hardware card driver is arranged in the hardware abstraction layer and used for initializing and driving the RAID card to work. The hardware abstraction layer also comprises a processor driving module, a chip set driving module and a peripheral driving module of UEFI BIOS.
The protocol layer includes a host driver and a bus driver. The system also comprises an ISA bus protocol, a PCI bus protocol, a USB bus protocol, a network protocol stack module and a file system module.
In addition, the protocol layer is also provided with a virtual disk drive and a block protocol.
The host driver is an example of UEFI SCSI host protocol defined by UEFI specification, and is used for realizing management of UEFI BIOS on a specific SCSI host controller.
The host drive analyzes the command packet sent by the bus drive, transmits the analyzed command to the RAID card downwards, and stores the response result of the RAID card to the SCSI command.
The bus drive is realized by adopting the existing UEFI BIOS, and the host drive and the RAID card drive are related to hardware and need to be designed and realized by self. The RAID card drive is divided into a RAID card drive framework and a RAID card drive service. The RAID card drive frame comprises three parts of Start, Stop and Supported, wherein the Start is used for allocating resources and initializing the RAID card, the Stop is used for releasing the resources allocated in the Start and stopping the equipment, and the Supported is used for checking whether the RAID card is Supported by the drive. The RAID card driving service defines a universal service template, which comprises a group of service interfaces for operating the hardware equipment at the bottom layer and is provided for the bus service layer at the upper layer. The design of a host machine driving of the RAID card is realized based on a UEFI SCSI Pass Thru protocol, wherein a PassThru function is directly related to specific hardware, and the main function is to construct and send SCSI commands to the RAID card. The bus driver takes the response from the underlying RAID card from the host driver and provides it up to the SCSI disk. The SCSI disk drive further provides services to upper layer drives (e.g., file systems) to convert upper layer IO requests into SCSI requests, thereby implementing IO request processing applied from the upper layer to the underlying RAID cards.
The core layer comprises a starting service and a runtime service, and the hardware abstraction layer and the protocol layer provide services for the core layer.
The core layer provides an interface for user space to access the kernel space.
The starting service provides UEFI event management service, memory management service, Protocol management service, drive management service and Image management service.
And the runtime service is used for continuously providing the read-write system time and the read-write UEFI system variable service for the OS loader and the OS after the start service is finished.
The above-described embodiments are merely preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (9)
1. A RAID card drive design method based on UEFI SCSI is characterized in that: the system is provided with a hardware abstraction layer, a protocol layer and a core layer, wherein a hardware card driver is arranged in the hardware abstraction layer and used for initializing and driving the RAID card to work; the protocol layer comprises a host driver and a bus driver; the core layer comprises a starting service and a runtime service, and the hardware abstraction layer and the protocol layer provide services for the core layer.
2. The UEFI SCSI based RAID card drive design method of claim 1, wherein: the hardware abstraction layer also comprises a processor driving module, a chip set driving module and a peripheral driving module of UEFIBIOS.
3. The UEFI SCSI based RAID card drive design method of claim 2, wherein: the host driver is an example of UEFI SCSI host protocol defined by UEFI specification, and is used for realizing management of UEFIBIOS on a specific SCSI host controller.
4. The UEFI SCSI based RAID card drive design method of claim 3, wherein: the bus driver obtains the response from the underlying RAID card from the host driver and provides it up to the SCSI disk.
5. The UEFI SCSI based RAID card drive design method of claim 4, wherein: the host drive analyzes the command packet sent by the bus drive, transmits the analyzed command to the RAID card downwards, and stores the response result of the RAID card to the SCSI command.
6. The UEFI SCSI based RAID card drive design method of claim 5, wherein: the protocol layer also comprises an ISA bus protocol, a PCI bus protocol, a USB bus protocol, a network protocol stack module and a file system module.
7. The UEFI SCSI based RAID card drive design method of claim 6, wherein: the core layer provides an interface for user space to access kernel space.
8. The UEFI SCSI based RAID card drive design method of claim 7, wherein: the starting service provides UEFI event management service, memory management service, Protocol management service, drive management service and Image management service.
9. The UEFI SCSI based RAID card drive design method of claim 8, wherein: and the runtime service is used for continuously providing read-write system time and read-write UEFI system variable services for the OS loader and the OS after the start service is finished.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113986362A (en) * | 2021-10-22 | 2022-01-28 | 山东云海国创云计算装备产业创新中心有限公司 | RAID card, control method thereof and server host |
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| CN104572061A (en) * | 2014-03-21 | 2015-04-29 | 中电科技（北京）有限公司 | UEFI (Unified Extensible Firmware Interface) firmware implementation method based on Loongson server |
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| CN113986362A (en) * | 2021-10-22 | 2022-01-28 | 山东云海国创云计算装备产业创新中心有限公司 | RAID card, control method thereof and server host |
| CN113986362B (en) * | 2021-10-22 | 2024-01-23 | 山东云海国创云计算装备产业创新中心有限公司 | RAID card, control method thereof and server host |
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