Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2
| ID | Date | Version | Classification |
|---|---|---|---|
| 834576 | 10/10/2024 | 001 | Public |
Device Control Register (GIO_DEV) – Offset 48
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:22 | 0h | RO | Reserved |
| 21 | 0x0 | RO | TRANS_PEND (TRANS_PEND) Indicates that a device has Non-Posted Requests which have not been completed |
| 20 | 0x1 | RO | Aux Power (AUX_P_DET) Device that requires AUX power reports this bit (asynch signal). |
| 19 | 0x0 | RW/1C | Unsupported Request Detected (UNSOP_REQ_DET) Indicates that the device received Unsupported Request |
| 18 | 0x0 | RW/1C | Fatal Error Detected (FAT_ERR_DET) Indicates status of fatal errors detected |
| 17 | 0x0 | RW/1C | Non-Fatal Error Detected (NFAT_ER_DET) Indicates status of non-fatal errors detected |
| 16 | 0x0 | RW/1C | Correctable Errors Detected (COR_ERR_DET) Indicates status of correctable errors detected. |
| 15 | 0x0 | RO | Initiate Function Level Reset (INIT_FNC_LV_RS) A write of 1b initiates Function (init FLR) |
| 14:12 | 0x0 | RW | Max Read Request Size (MAX_RDRQ_SIZE) Sets the maximum Read Request size |
| 11 | 0x1 | RW | Enable No Snoop (EN_NO_SNOOP) Enable No Snoop (if set device is permitted to set No Snoop bit) |
| 10 | 0x1 | RW | Auxiliary Power PM Enable (AUX_PM_EN) Sticky value. |
| 9 | 0h | RO | Reserved |
| 8 | 0x0 | RO | IO Space access Enable (IO_SPC_AC_EN_8) IO Space access Enable |
| 7:5 | 0x0 | RW | Max Payload Size (MAX_PAY_SIZE) Sets maximum TLP payload size for the device functions |
| 4 | 0x1 | RW | Relax Order Enable (EN_REL_ORD) When set device permitted to set the Relaxed Ordering bit |
| 3 | 0x0 | RW | Unsupported Request Reporting (UNSOP_REQ_REP) Enables reporting of Unsupported Request when set |
| 2 | 0x0 | RW | Fatal Error Reporting (FAT_ERR_REP) Controls reporting of fatal errors |
| 1 | 0x0 | RW | Non-Fatal Error Reporting (NFAT_ER_REP) Controls reporting of non-fatal errors |
| 0 | 0x0 | RW | Correctable Error Reporting (COR_ERR_REP) Controls reporting of correctable errors. |