Visible to Intel only — Ixiasoft
Visible to Intel only — Ixiasoft
31.7.1.3.1. Descriptor Fields Definition
Next Descriptor Pointer
The next descriptor pointer field specifies the address of the next descriptor in the linked list.
Actual Bytes Transferred
Specifies the actual number of bytes that has been transferred. This field is not applicable if Modular SGDMA is configured as Memory-Mapped to Streaming transfer.
Bits | Fields | Description |
---|---|---|
15:9 | Reserved | Reserved fields |
8 | Early Termination | Indicates early termination condition where write host is performing a packet transfer and does not receive EOP before pre-determined amount of bytes are transferred. This status bit is similar to status register bit 8 of the dispatcher core. For more details refer to dispatcher core CSR definition. This field is not applicable if Modular SGDMA is configured as Memory-Mapped to Streaming transfer. |
7:0 | Error | Indicates an error has arrived at the write host streaming sink port. This field is not applicable if Modular SGDMA is configured as Memory-Mapped to Streaming transfer. |
Bits | Fields | Description |
---|---|---|
30 | Owned by Hardware | This field determines whether hardware or software has write access to the current descriptor. When this field is set to 1, the Modular SGDMA can update the descriptor and software should not access the descriptor due to the possibility of race conditions. Otherwise, it is safe for software to update the descriptor. |
For bit 31 and 29:0, refer to descriptor control field bit 31 and 29:0 defined in dispatcher core. Table 313