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NVME_CDW10_GET_FEATURES union (nvme.h)

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Contains parameters for the Get Features command that retrieves the attributes of the specified feature.

The Get Features command uses the NVME_CDW10_GET_FEATURES structure in the CDW10 parameter of the GETFEATURES field of the Command structure.

Syntax

typedef union {
  struct {
    ULONG FID : 8;
    ULONG SEL : 3;
    ULONG Reserved0 : 21;
  } DUMMYSTRUCTNAME;
  ULONG  AsUlong;
} NVME_CDW10_GET_FEATURES, *PNVME_CDW10_GET_FEATURES;

Members

DUMMYSTRUCTNAME

DUMMYSTRUCTNAME.FID

Specifies an NVME_FEATURES value that identifies the feature for which to provide data.

DUMMYSTRUCTNAME.SEL

Specifies an NVME_FEATURE_VALUE_CODES value that indicates which value of the attributes to return in the provided data.

The controller indicates in bit 4 of the Optional NVM Command Support ONCS field of the Identify Controller data structure whether the SEL field is supported.

If a Get Features command is received with the SEL** field set to 010b (NVME_FEATURE_VALUE_SAVED), for example, and the controller does not support the Feature Identifier being saved or does not currently have any saved values, then the controller treats the SEL field as though it were set to 001b (NVME_FEATURE_VALUE_DEFAULT).

DUMMYSTRUCTNAME.Reserved0

AsUlong

Requirements

Requirement Value
Minimum supported client Windows 10
Header nvme.h

See also