1STRUCT CCW1(9)                    The ccw bus                   STRUCT CCW1(9)
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NAME

6       struct_ccw1 - channel command word
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SYNOPSIS

9       struct ccw1 {
10         __u8 cmd_code;
11         __u8 flags;
12         __u16 count;
13         __u32 cda;
14       };
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MEMBERS

17       cmd_code
18           command code
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20       flags
21           flags, like IDA adressing, etc.
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23       count
24           byte count
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26       cda
27           data address
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DESCRIPTION

30       The ccw is the basic structure to build channel programs that perform
31       operations with the device or the control unit. Only Format-1 channel
32       command words are supported.
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AUTHOR

35       Cornelia Huck <cornelia.huck@de.ibm.com>
36           Author.
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39Kernel Hackers Manual 2.6.         June 2019                    STRUCT CCW1(9)
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