Visible to Intel only — GUID: hbu1663379570199
Ixiasoft
Visible to Intel only — GUID: hbu1663379570199
Ixiasoft
7.1.2. Device Feature Header Hi
Description: Upper 32-bit of Device Feature Header (DFH)
Byte Offset: 0x4
Addressing Mode: 32 bits
Bit | Type | Value After Reset | Description |
---|---|---|---|
31:28 | RO | 0x3 | Feature Type |
27:20 | RO | 0x0 | DFH version |
19:16 | RO | 0x0 | Feature Minor Revision |
15:9 | RO | 0 | Reserved |
8:8 | RO | 0x0 | End of List 1’b0= This is last feature header (see “Next DFH Byte Offset”) |
7:0 | RO | 0x00 | Next DFH Byte Offset Bit [39:32] Next DFH Address = 0x00 (Current DFH Address + Next DFH Byte Offset Used to figure out Next DFH Address and as an indication for the maximum size of MMIO region occupied by this feature. For last feature, this offset points to the beginning of the unallocated MMIO region, if any (or beyond the end of the MMIO space). |