Computer system and method of issuing input/output commands therefrom

A computer system comprising a plurality of input/output devices;

• an adapter device coupled to said plurality of input/output devices;
• and a main processing unit coupled to said adapter device;
• said main processing unit including:
• a wait request management table for storing therein and managing an input/output request intended for transfer to each of said plurality of input/output devices via said adapter device;
• means for storing the input/output request in said wait request management table when the input/output request is immediately unprocessible upon transfer of the input/output request;
• and
• means for creating a plurality of command sequences each comprised of input/output commands arranged in a row to be supplied to said each input/output device based on the input/output request stored in said wait request management table when the input/output request is processible, and for transferring said plurality of command sequences to said adapter device as a single input/output start command;
• said adapter device including:
• means for determining to which input/output devices said plurality of command sequences included in said single input/output start command correspond;
• and
• means for supplying the input/output commands of each of said plurality of command sequences to said determined input/output devices, respectively.

A computer system comprising a plurality of input/output devices;

• an adapter device coupled to said plurality of input/output devices;
• and a main processing unit coupled to said adapter device, said main processing unit having an application executing unit for executing an application program and a driver for processing an input/output request issued from the application executing unit;
• said driver including means for producing an input/output command based on the input/output request issued from the application executing unit and transferring a plurality of said input/output commands to respective ones of said plurality of input/output devices as a single input/output start command;
• said adapter device including means for determining to which input/output devices said plurality of input/output commands included in said single input/output start command correspond;
• and means for supplying said plurality of input/output commands to said determined input/output devices, respectively.

A computer system comprising a plurality of input/output devices;

• an adapter device coupled to said plurality of input/output devices;
• and a main processing unit coupled to said adapter device, said main processing unit having an application executing unit for executing an application program and a driver for processing an input/output request issued from the application executing unit;
• said driver including:
• a wait request management table for storing therein and managing the input/output request issued from the application executing unit;
• means for storing the input/output request in said wait request management table when the input/output request is immediately unprocessible upon issuance of the input/output request from the application executing unit;
• and
• means for creating a plurality of command sequences each comprised of input/output commands arranged in a row to be supplied to said each input/output device based on the input/output request stored in said wait request management table when the input/output request is processible, and for transferring said plurality of command sequences to said adapter device as a single input/output start command;
• said adapter device including:
• means for determining to which input/output devices said plurality of command sequences included in said single input/output start command correspond;
• and
• means for supplying the input/output commands of each of said plurality of command sequences to said determined input/output devices, respectively.

A method of transferring a plurality of input/output commands from a computer system including a plurality of input/output devices, an adapter device coupled to said plurality of input/output devices, and a main processing unit coupled to said adapter device, comprising the steps of:

• transferring the plurality of input/output requests intended for respective ones of said plurality of input/output devices from said main processing unit to said adapter device as a single input/output start command;
• said adapter device determining to which input/output devices said plurality of input/output requests included in said single input/output start command correspond;
• and
• said adapter device supplying said plurality of input/output requests to said determined input/output devices, respectively.

A method of transferring a plurality of input/output commands from a computer system including a plurality of input/output devices, an adapter device coupled to said plurality of input/output devices, and a main processing unit coupled to said adapter device, comprising the steps of:

• said main processing unit storing therein and managing an input/output request intended for transfer to said each input/output device via said adapter device in a wait request management table when the input/output request is immediately unprocessible upon transfer of the input/output request to said each input/output device;
• said main processing unit creating a plurality of command sequences each comprised of input/output commands arranged in a row to be supplied to said each input/output device based on the input/output request stored in said wait request management table when the input/output request is processible, and for transferring said plurality of command sequences to said adapter device as a single input/output start command;
• said adapter device determining to which input/output devices said plurality of command sequences included in said single input/output start command correspond;
• and
• said adapter device supplying the input/output commands of each of said plurality of command sequences to said determined input/output devices, respectively.

A method of transferring a plurality of input/output commands from a computer system including a plurality of input/output devices, an adapter device coupled to said plurality of input/output devices, and a main processing unit coupled to said adapter device, said main processing unit having an application executing unit for executing an application program and a driver for processing an input/output request issued from the application executing unit, comprising the steps of:

• transferring said plurality of input/output commands to respective ones of said plurality of input/output devices from said driver as a single input/output start command;
• said adapter device determining to which input/output devices said plurality of input/output commands included in said one input/output start command correspond;
• and
• supplying said plurality of input/output commands to said determined input/output devices, respectively.

A method of transferring a plurality of input/output commands from a computer system including a plurality of input/output devices, an adapter device coupled to said plurality of input/output devices, and a main processing unit coupled to said adapter device, said main processing unit having an application executing unit for executing an application program and a driver for processing an input/output request issued from the application executing unit, comprising the steps of:

• said driver storing therein and managing an input/output request issued from the application executing unit in a wait request management table when the input/output request is immediately unprocessible upon issuance of the input/output request from the application executing unit;
• said driver creating a plurality of command sequences each comprised of input/output commands arranged in a row to be supplied to said each input/output device based on the input/output request stored in said wait request management table when the input/output request is processible, and for transferring said plurality of command sequences to said adapter device as a single input/output start command;
• said adapter device determining to which input/output devices said plurality of command sequences included in said single input/output start command correspond;
• and
• said adapter device supplying the input/output commands of each of said plurality of command sequences to said determined input/output devices, respectively.