Notes

Ep2055163a4
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For example, if the class of the adapter 310 have been of sort “SCSI” , the configuration supervisor 500 would comply with the method described in FIG. 10 for freezing the communication for a mass storage adapter 102. Next, in some embodiments, the recent plug hardware 318 asserts bus reset, if essential, before eradicating energy . In other embodiments, the configuration supervisor 500 specifically causes bus reset to be asserted earlier than directing the hot plug hardware 318 to remove power. For embodiments of the pc shown in FIG.
Starting at state 1700, a person, through an administrative agent 1103, requests to suspend or restart communications to a specified adapter 310. Moving to state 1702, the configuration manager 1100 information the new state of the adapter 310. The configuration manager 1100 then finds and calls the device state IRP's completion routine of the adapter 310. The configuration manager 1100 finds the proper completion routine by analyzing each of the device state IRPs posted by the adapter drivers 308. Referring to FIG. 10C, states 1030 to 1036 describe the process by which the communication between the mass storage adapter and an adapter driver is restarted.
sixteen is a flowchart showing one embodiment of the method by which the FindAdapter routine for an adapter handles a scorching add request. sixteen provides a more detailed explanation of the state 1504 shown in FIG. Starting in state 1600, the FindAdapter routine performs the traditional initialization functions that are associated with the routine. Moving to state 1402, the configuration supervisor 1100 makes an inner verify to see if an adapter driver 308 had previously registered with the configuration manager 1100. If no adapter driver 308 registered for this adapter 310, the configuration manager 1100 returns an error .
The adapter 310 might be any sort of peripheral device corresponding to a community adapter, a mass storage adapter, or a sound board. The adapter 310 is physically related to the recent plug hardware by PC slots similar to slots 241 and 266 (FIGS. 2 and 3). 4 is a block diagram illustrating hardware and software components of the pc system 100 referring to scorching plugging an adapter. A hot plug consumer interface 302 accepts requests by a person such as a system manager or administrator to perform the recent add or a scorching swap of an adapter 310. The person interface 302 ideally communicates by way of an business standard operating system 304 corresponding to Windows NT or NetWare, to the hot plug system driver 306 and an adapter driver 308.
hard drives does not remove the adapter driver 308 from the memory, but leaves it in place and preserves its present state. The HSM 508 receives this call and shuts down all communication to the adapter. Otherwise, if the person has requested a driver resume, the configuration supervisor 500 calls DriverControl entry level with the operation code ‘6’ state 928.
2, the recent plug hardware 318 is then directed by the configuration manager 500 to droop the facility to the slot . three, the hot plug hardware 318 is directed by the configuration manager 500 to suspend the power to adapter's canister . 2, the configuration supervisor 500 suspends the communication between the adapter, which is to be swapped, and the adapter driver 308 . three, the configuration supervisor 500 freezes the communication to every adapter situated on the same canister as the adapter to be swapped. 9 and 10, described beneath, illustrate the method by which the communication is suspended and restarted for, respectively, a mass storage adapter and a network adapter. With respect to community gadget drivers, such as a driver 524, ODI was created to allow multiple LAN adapters, such because the adapter 104 to co-exist on community techniques, and to facilitate the task of writing device driver software.
The HDM is designed to speak by way of messages with any type of operating system executing on the pc. These messages correspond to primitives which allow sizzling add and scorching swap of adapters plugged into the motherboard. Current operating methods don't by themselves present the help users need to scorching add and swap an adapter.
The ODI specification describes the set of interface (FIG. 1) and software program modules used by hardware distributors to interface with the NetWare operating system. At the core of the ODI is the hyperlink assist layer 502. The LSL 502 is the interface between drivers and protocol stacks . Any LAN driver written to ODI specs can talk with any ODI protocol stack through the LSL 502.
In an alternative embodiment of the invention, a proprietary operating system could also be utilized. Therefore, a need exists for enhancements in server management which is able to result in continuous operation despite adapter failures. System users should have the power to substitute failed components, improve outdated components, and add new performance, similar to new community interfaces, disk interface adapters and storage, with out impacting current customers. Additionally, system users need a course of to hot add their legacy adapters, with out buying new adapters which are particularly designed for hot plug. As system demands grow, organizations should regularly increase, or scale, their computing infrastructure, including new processing power, memory, mass storage and network adapters.
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