functionality offered may vary by virtual machine implementation.
The DAX is a virtual device to sun4v guests, with supported data operations indicated by the virtual device
- compatibilty property. Functionality is accessed through the submission of Command Control Blocks
+ compatibility property. Functionality is accessed through the submission of Command Control Blocks
(CCBs) via the ccb_submit API function. The operations are processed asynchronously, with the status
of the submitted operations reported through a Completion Area linked to each CCB. Each CCB has a
separate Completion Area and, unless execution order is specifically restricted through the use of serial-
Secondary Input Description
Format Code
- 0 Element is stored as value minus 1 (0 evalutes to 1, 1 evalutes
+ 0 Element is stored as value minus 1 (0 evaluates to 1, 1 evaluates
to 2, etc)
1 Element is stored as value
“Secondary Input Element Size”
[13:10] Output Format (see Section 36.2.1.1.6, “Output Format”)
[9:5] Operand size for first scan criteria value. In a scan value
- operation, this is one of two potential extact match values.
+ operation, this is one of two potential exact match values.
In a scan range operation, this is the size of the upper range
operand, minus 1. Values 0xF-0x1E are reserved. A value of
0x1F indicates this operand is not in use for this scan operation.
[4:0] Operand size for second scan criteria value. In a scan value
- operation, this is one of two potential extact match values.
+ operation, this is one of two potential exact match values.
In a scan range operation, this is the size of the lower range
boundary. The value of this field is the number of bytes in the
operand, minus 1. Values 0xF-0x1E are reserved. A value of
48 8 Output (same fields as Primary Input)
56 8 Symbol Table (if used by Primary Input). Same fields as Section 36.2.1.2,
“Extract command”
-64 4 Next 4 most significant bytes of first scan criteria operand occuring after the
+64 4 Next 4 most significant bytes of first scan criteria operand occurring after the
bytes specified at offset 40, if needed by the operand size. If first operand
is less than 8 bytes, the valid bytes are left-aligned to the lowest address.
-68 4 Next 4 most significant bytes of second scan criteria operand occuring after
+68 4 Next 4 most significant bytes of second scan criteria operand occurring after
the bytes specified at offset 44, if needed by the operand size. If second
operand is less than 8 bytes, the valid bytes are left-aligned to the lowest
address.
-72 4 Next 4 most significant bytes of first scan criteria operand occuring after the
+72 4 Next 4 most significant bytes of first scan criteria operand occurring after the
bytes specified at offset 64, if needed by the operand size. If first operand
is less than 12 bytes, the valid bytes are left-aligned to the lowest address.
-76 4 Next 4 most significant bytes of second scan criteria operand occuring after
+76 4 Next 4 most significant bytes of second scan criteria operand occurring after
the bytes specified at offset 68, if needed by the operand size. If second
operand is less than 12 bytes, the valid bytes are left-aligned to the lowest
address.
-80 4 Next 4 most significant bytes of first scan criteria operand occuring after the
+80 4 Next 4 most significant bytes of first scan criteria operand occurring after the
bytes specified at offset 72, if needed by the operand size. If first operand
is less than 16 bytes, the valid bytes are left-aligned to the lowest address.
-84 4 Next 4 most significant bytes of second scan criteria operand occuring after
+84 4 Next 4 most significant bytes of second scan criteria operand occurring after
the bytes specified at offset 76, if needed by the operand size. If second
operand is less than 16 bytes, the valid bytes are left-aligned to the lowest
address.
36.2.1.4. Translate commands
- The translate commands takes an input array of indicies, and a table of single bit values indexed by those
- indicies, and outputs a bit vector or index array created by reading the tables bit value at each index in
+ The translate commands takes an input array of indices, and a table of single bit values indexed by those
+ indices, and outputs a bit vector or index array created by reading the tables bit value at each index in
the input array. The output should therefore contain exactly one bit per index in the input data stream,
- when outputing as a bit vector. When outputing as an index array, the number of elements depends on the
+ when outputting as a bit vector. When outputting as an index array, the number of elements depends on the
values read in the bit table, but will always be less than, or equal to, the number of input elements. Only
a restricted subset of the possible input format types are supported. No variable width or Huffman/OZIP
encoded input streams are allowed. The primary input data element size must be 3 bytes or less.
code in the CCB header.
There are two supported formats for the output stream: the bit vector and index array formats (codes 0x8,
- 0xD, and 0xE). The index array format is an array of indicies of bits which would have been set if the
+ 0xD, and 0xE). The index array format is an array of indices of bits which would have been set if the
output format was a bit array.
The return value of the CCB completion area contains the number of bits set in the output bit vector,
submitted CCB, or may apply to a larger scope. The status should not be
interpreted as permanent, and the guest should attempt to submit CCBs in
the future which had previously been unable to be performed. The status
- data provides additional information about scope of the retricted availability
+ data provides additional information about scope of the restricted availability
as follows:
Value Description
0 Processing for the exact CCB instance submitted was unavailable,
of other CCBs ahead of the requested CCB, to provide a relative estimate of when the CCB may execute.
The dax return value is only valid when the state is ENQUEUED. The value returned is the DAX unit
- instance indentifier for the DAX unit processing the queue where the requested CCB is located. The value
+ instance identifier for the DAX unit processing the queue where the requested CCB is located. The value
matches the value that would have been, or was, returned by ccb_submit using the queue info flag.
The queue return value is only valid when the state is ENQUEUED. The value returned is the DAX
- queue instance indentifier for the DAX unit processing the queue where the requested CCB is located. The
+ queue instance identifier for the DAX unit processing the queue where the requested CCB is located. The
value matches the value that would have been, or was, returned by ccb_submit using the queue info flag.
36.3.2.1. Errors
- EOK The request was proccessed and the CCB state is valid.
+ EOK The request was processed and the CCB state is valid.
EBADALIGN address is not on a 64-byte aligned.
ENORADDR The real address provided for address is not valid.
EINVAL The CCB completion area contents are not valid.
- EWOULDBLOCK Internal resource contraints prevented the CCB state from being queried at this
+ EWOULDBLOCK Internal resource constraints prevented the CCB state from being queried at this
time. The guest should retry the request.
ENOACCESS The guest does not have permission to access the coprocessor virtual device
functionality.
36.3.3.2. Errors
- EOK The request was proccessed and the result is valid.
+ EOK The request was processed and the result is valid.
EBADALIGN address is not on a 64-byte aligned.
ENORADDR The real address provided for address is not valid.
EINVAL The CCB completion area contents are not valid.
- EWOULDBLOCK Internal resource contraints prevented the CCB from being killed at this time.
+ EWOULDBLOCK Internal resource constraints prevented the CCB from being killed at this time.
The guest should retry the request.
ENOACCESS The guest does not have permission to access the coprocessor virtual device
functionality.
36.3.4.1. Errors
- EOK The request was proccessed and the number of enabled/disabled DAX units
+ EOK The request was processed and the number of enabled/disabled DAX units
are valid.
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